def test_simple_scaling():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
q = Quantity('1kg')
assert q.render() == '1 kg'
assert q.render(scale=0.001, show_units=False) == '1'
with pytest.raises(KeyError,
message="Unable to convert between 'fuzz' and 'g'."):
q.render(scale='fuzz')
q = Quantity('1', units='g', scale=1000)
assert q.render() == '1 kg'
assert q.render(scale=(0.0022046, 'lbs')) == '2.2046 lbs'
q = Quantity('1', scale=(1000, 'g'))
assert q.render() == '1 kg'
assert q.render(scale=lambda v, u: (0.0022046 * v, 'lbs')) == '2.2046 lbs'
def dB(v, u):
return 20 * math.log(v, 10), 'dB' + u
def adB(v, u):
return pow(10, v / 20), u[2:] if u.startswith('dB') else u
q = Quantity('-40 dBV', scale=adB)
assert q.render() == '10 mV'
assert q.render(scale=dB) == '-40 dBV'
def test_time():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
Quantity.set_prefs(ignore_sf=True)
q = Quantity('86400 s')
assert q.render() == '86.4 ks'
assert q.render(scale='sec') == '86.4 ksec'
assert q.render(scale='min') == '1.44 kmin'
assert q.render(scale='hr') == '24 hr'
assert q.render(scale='hour') == '24 hour'
assert q.render(scale='day') == '1 day'
q = Quantity('1 day', scale='s')
assert q.render() == '86.4 ks'
q = Quantity('24 hour', scale='s')
assert q.render() == '86.4 ks'
q = Quantity('24 hr', scale='s')
assert q.render() == '86.4 ks'
q = Quantity('60 min', scale='s')
assert q.render() == '3.6 ks'
q = Quantity('60 sec', scale='s')
assert q.render() == '60 s'
def _plot(self):
# create plot
fig = plt.figure()
ax = plt.subplot(111)
ax.scatter(self.times,
self.frequencies,
color="#00A2FF",
label='Frequency')
# grid
plt.grid(b=True,
which='major',
color='k',
linestyle='-',
alpha=0.2,
linewidth=0.3)
plt.grid(b=True,
which='minor',
color='k',
linestyle='-',
alpha=0.15,
linewidth=0.15)
plt.minorticks_on()
# limits
#ax.set_xlim([freq.min(),freq.max()])
#plt.xticks([0,len(freq)], freq)
# layout
fig.set_tight_layout(True)
plt.rcParams.update({'font.size': 8})
avg = Quantity(self.frequencies.mean(), "Hz")
avg = SetPrecisionToResolution(avg, self.resolution / 10.0)
std = Quantity(self.frequencies.std(), "Hz")
ax.annotate(
"Sample rate: %s, gate time: %s\nmean: %s, std: %s" %
(Quantity(self.rate, "Hz").render(), Quantity(
self.gate, "s").render(), avg.render(), std.render()),
xy=(1, 0),
xycoords='axes fraction',
fontsize=8,
xytext=(-5, 5),
textcoords='offset points',
ha='right',
va='bottom')
# axis labels
plt.xlabel("Time [s]")
plt.ylabel("Frequency [Hz]")
#PYTHON....There's a matplotlib bug coming up here'
with warnings.catch_warnings():
warnings.simplefilter(action='ignore', category=FutureWarning)
plt.show()
def test_add():
total = Quantity(0, '$')
for contribution in [1.23, 4.56, 7.89]:
total = total.add(contribution)
assert total.render() == '$13.68'
for contribution in [1.23, 4.56, 8.89]:
total = total.add(contribution, check_units=True)
assert total.render() == '$28.36'
for contribution in [1.23, 4.56, 9.89]:
total = total.add(Quantity(contribution, '$'), check_units=True)
assert total.render() == '$44.04'
try:
total = total.add(Quantity(contribution, 'lbs'), check_units=True)
assert False
except TypeError:
assert True
def _collect_data(self):
state, index = self.scope.locate_buffer(
channel=self.channel,
samples=int(self.samples),
segment=0,
mode=self.scope.m.RatioModes.raw,
downsample=0)
while self.stopRequested == False:
starttime = time.time()
status = self.scope.collect_segment(segment=0,
timebase=self.timebase)
status, data = self.scope.get_buffer_volts(0)
endtime = time.time()
self.timeCounter += endtime - starttime
self.times = np.append(self.times, self.timeCounter)
freq = float(self._number_of_crossings(data, 0.0)) / self.gate
freq = TruncateToResolution(freq, self.resolution)
self.frequencies = np.append(self.frequencies, freq)
freq = Quantity(freq, "Hz")
freq = SetPrecisionToResolution(freq, self.resolution)
self.frequencyLabel._text = "Frequency: %s" % freq.render()
#try:
# freqDerivative = np.gradient(self.frequencies)[-1]
# self.frequencyDerivativeLabel._text = "Frequency': %s" % freqDerivative
#except:
# None
avg = Quantity(self.frequencies.mean(), "Hz")
avg = SetPrecisionToResolution(avg, self.resolution / 10.0)
self.meanLabel._text = "Average: %s" % avg.render()
self.stdLabel._text = "Deviation: %s" % Quantity(
self.frequencies.std(), "Hz").render()
self.gateCounter += 1
self.sampleCounter += self.samples
self.gatesLabel._text = "Gates: %s" % Quantity(
self.gateCounter).render()
self.timeLabel._text = "Time: %s" % Quantity(
self.timeCounter, "s").render()
self.totalSamplesLabel._text = "Samples: %s" % Quantity(
self.sampleCounter, "S").render()
self.screen.force_update()
self.stopButton.disabled = True
self.startButton.disabled = False
self.plotButton.disabled = False
self.saveButton.disabled = False
class Currency:
def __init__(self, tokens, price=0):
self.tokens = Quantity(tokens, self.UNITS)
if price < 0:
raise Error('price must not be negative.', culprit=self.name())
self.price = Dollars(price)
def in_tokens(self):
return self.tokens
def in_dollars(self, price=None):
price = self.price if price is None else price
return Dollars(self.tokens * price)
def name(self):
return self.__class__.__name__
def __str__(self):
return self.tokens.render()
def __float__(self):
return float(self.tokens)
@classmethod
def converter(cls, to, data):
try:
# SYMBOL is not unique
#return UnitConversion(to, (cls.SYMBOL, cls.UNITS), data[cls.UNITS][to[-1]])
return UnitConversion(to, cls.UNITS, data[cls.UNITS][to[-1]])
except KeyError as e:
comment(f'missing price in {e}.', culprit=cls.UNITS)
@classmethod
def names(cls):
for s in cls.__subclasses__():
yield s.__name__
@classmethod
def units(cls):
for s in cls.__subclasses__():
yield s.UNITS
@classmethod
def currencies(cls):
for s in sorted(cls.__subclasses__(), key=lambda s: s.__name__):
yield s
@classmethod
def currency(cls, name):
for s in cls.__subclasses__():
if name == s.__name__:
return s
def test_full_format():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None,
show_desc=False)
Quantity.set_prefs(prec='full')
q = Quantity('f = 1420.405751786 MHz -- frequency of hydrogen line')
assert '{}'.format(q) == '1.420405751786 GHz'
assert '{:.8}'.format(q) == '1.42040575 GHz'
assert '{:.8s}'.format(q) == '1.42040575 GHz'
assert '{:.8S}'.format(q) == 'f = 1.42040575 GHz'
assert '{:.8q}'.format(q) == '1.42040575 GHz'
assert '{:.8Q}'.format(q) == 'f = 1.42040575 GHz'
assert '{:r}'.format(q) == '1.420405751786G'
assert '{:R}'.format(q) == 'f = 1.420405751786G'
assert '{:u}'.format(q) == 'Hz'
assert '{:.4f}'.format(q) == '1420405751.786'
assert '{:.4F}'.format(q) == 'f = 1420405751.786'
assert '{:e}'.format(q) == '1.420405751786e+09'
assert '{:E}'.format(q) == 'f = 1.420405751786e+09'
assert '{:g}'.format(q) == '1420405751.786'
assert '{:G}'.format(q) == 'f = 1420405751.786'
assert '{:n}'.format(q) == 'f'
assert '{:d}'.format(q) == 'frequency of hydrogen line'
assert '{:.2p}'.format(q) == '1420405751.79 Hz'
assert '{:,.2p}'.format(q) == '1,420,405,751.79 Hz'
assert '{:.2P}'.format(q) == 'f = 1420405751.79 Hz'
assert '{:,.2P}'.format(q) == 'f = 1,420,405,751.79 Hz'
assert '{:#.3q}'.format(q) == '1.420 GHz'
assert '{:#.6p}'.format(q) == '1420405751.786000 Hz'
assert '{:.0q}'.format(q) == '1 GHz'
assert '{:.0p}'.format(q) == '1420405752 Hz'
assert '{:#.0q}'.format(q) == '1 GHz'
assert '{:#.0p}'.format(q) == '1420405752. Hz'
values = '''
1.000000 +1.000000 -1.000000
$1.000000 +$1.000000 -$1.000000
1.000000_V +1.000000_V -1.000000_V
1.234567 +1.234567 -1.234567
$1.234567 +$1.234567 -$1.234567
1.234567_V +1.234567_V -1.234567_V
'''
for given in values.split():
expected = given.lstrip('+').replace('_', ' ')
q = Quantity(given)
assert q.render(form='si', prec='full', strip_zeros=False) == expected
q = Quantity('2ns')
assert float(q) == 2e-9
def test_plus_minus():
with Quantity.prefs(
spacer = None,
show_label = None,
label_fmt = None,
label_fmt_full = None,
show_desc = False,
prec = 4,
plus = Quantity.plus_sign,
minus = Quantity.minus_sign,
map_sf = Quantity.map_sf_to_sci_notation,
):
qpp=Quantity('+1Ms')
qpm=Quantity('+1us')
qmp=Quantity('-1Ms')
qmm=Quantity('-1us')
assert '{}'.format(qpp) == '1 Ms'
assert '{}'.format(qpm) == '1 µs'
assert '{}'.format(qmp) == '−1 Ms'
assert '{}'.format(qmm) == '−1 µs'
assert '{0:e} {0:u}'.format(qpp) == '1e＋06 s'
assert '{0:e} {0:u}'.format(qpm) == '1e−06 s'
assert '{0:e} {0:u}'.format(qmp) == '−1e＋06 s'
assert '{0:e} {0:u}'.format(qmm) == '−1e−06 s'
assert '{:.8p}'.format(qpp) == '1000000 s'
assert '{:.8p}'.format(qpm) == '0.000001 s'
assert '{:.8p}'.format(qmp) == '−1000000 s'
assert '{:.8p}'.format(qmm) == '−0.000001 s'
assert qpp.render(form='sia') == '1 Ms'
assert qpm.render(form='sia') == '1 us'
assert qmp.render(form='sia') == '−1 Ms'
assert qmm.render(form='sia') == '−1 us'
def test_mass():
with Quantity.prefs(
spacer=None, show_label=None, label_fmt=None, label_fmt_full=None,
ignore_sf=False
):
q=Quantity('1 g')
assert q.render() == '1 g'
assert q.render(scale='oz') == '35.274 moz'
assert q.render(scale='lb') == '2.2046 mlb'
assert q.render(scale='lbs') == '2.2046 mlbs'
q=Quantity('1 oz', scale='g')
assert q.render() == '28.35 g'
q=Quantity('1 lb', scale='g')
assert q.render() == '453.59 g'
q=Quantity('1 lbs', scale='g')
assert q.render() == '453.59 g'
def test_misc():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
q = Quantity(1420405751.786, 'Hz')
assert q.render(show_si=False, show_units=False) == '1.4204e9'
t = Quantity('1420405751.786 Hz').as_tuple()
assert t == (1420405751.786, 'Hz')
t = Quantity('1420405751.786 Hz').render(show_si=True,
show_units=True,
prec='full')
assert t == '1.420405751786 GHz'
s = Quantity('1420405751.786 Hz').render(show_si=False,
show_units=True,
prec='full')
assert s == '1.420405751786e9 Hz'
f = float(Quantity('1420405751.786 Hz'))
assert f == 1420405751.786
t = Quantity('1420405751.786 Hz').render(show_si=True, show_units=False)
assert t == '1.4204G'
s = Quantity('1420405751.786 Hz').render(show_si=False, show_units=False)
assert s == '1.4204e9'
s = Quantity(1420405751.786, 'Hz').render(show_si=False,
show_units=False,
prec='full')
assert s == '1.420405751786e9'
f = Quantity('14204.05751786MHz').render(show_si=True,
show_units=False,
prec='full')
assert f == '14.20405751786G'
q = Quantity('1420405751.786 Hz', units='HZ').render()
assert q == '1.4204 GHZ'
q = Quantity('1420405751.786 Hz')
assert q.is_nan() == False
q = Quantity('1420405751.786 Hz')
assert q.is_infinite() == False
q = Quantity('NaN Hz')
assert q.is_nan() == True
q = Quantity('NaN Hz')
assert q.is_infinite() == False
q = Quantity('inf Hz')
assert q.is_nan() == False
q = Quantity('inf Hz')
assert q.is_infinite() == True
# check the various formats for assignment recognition
q = Quantity('f_hy = 1420405751.786 Hz -- frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz -- frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy: 1420405751.786 Hz # frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz -- frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy = 1420405751.786 Hz // frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz -- frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy = 1420405751.786 Hz')
assert q.render(show_label='f') == 'f_hy = 1.4204 GHz'
assert q.name == 'f_hy'
assert q.desc == ''
q = Quantity('1420405751.786 Hz // frequency of hydrogen line')
assert q.render(show_label='f') == '1.4204 GHz'
assert q.name == ''
assert q.desc == 'frequency of hydrogen line'
q = Quantity('1420405751.786 Hz')
assert q.render(show_label='f') == '1.4204 GHz'
assert q.name == ''
assert q.desc == ''
class Foo(Quantity):
pass
Foo.set_prefs(assign_rec=r'(?P<name>\w+)\s*=\s*(?P<val>.*)')
q = Foo('seven = 7')
assert q.name == 'seven'
assert str(q) == '7'
with pytest.raises(ValueError):
q = Foo('%')
with pytest.raises(KeyError):
Foo.set_prefs(assign_rec=r'(\w+)\s*=\s*(.*)') # no named groups
Foo('seven = 7')
assert Foo.get_pref('prec') == 4
assert Foo.get_pref('full_prec') == 12
with Foo.prefs(prec=5, full_prec=13):
assert Foo.get_pref('prec') == 5
assert Foo.get_pref('full_prec') == 13
with Foo.prefs(prec=6, full_prec=14):
assert Foo.get_pref('prec') == 6
assert Foo.get_pref('full_prec') == 14
assert Foo.get_pref('prec') == 5
assert Foo.get_pref('full_prec') == 13
assert Foo.get_pref('prec') == 4
assert Foo.get_pref('full_prec') == 12
q = Quantity('1.8_V')
assert q.render(prec='full') == '1.8 V'
with pytest.raises(ValueError):
q = Quantity('x*y = z')
with pytest.raises(ValueError):
Quantity.extract('1ns')
# this used to be an ValueError because 'x*y' is not an identifier
vals = Quantity.extract('x*y = 1 m/s')
assert str(vals['x*y']) == '1 m/s'
# this used to be an ValueError because 'in' is a python keyword
vals = Quantity.extract('in = 1mA')
assert str(vals['in']) == '1 mA'
with pytest.raises(ValueError):
Quantity('x\ny = z')
Quantity.set_prefs(label_fmt='{x}')
with pytest.raises(KeyError):
'{:S}'.format(Quantity('f = 1kHz'))
Quantity.set_prefs(label_fmt_full='{n} = {v} # {d}',
label_fmt='{n} = {v}',
show_desc=True)
q1 = Quantity('10ns', name='trise')
q2 = Quantity('10ns', name='trise', desc='rise time')
assert '{:G}'.format(q1) == 'trise = 1e-08'
assert '{:G}'.format(q2) == 'trise = 1e-08 # rise time'
q3 = Quantity('10cm', name='foo')
q4 = Quantity('10%', name='bar', desc='buzz')
assert '{:G}'.format(q3) == 'foo = 0.1'
assert '{:G}'.format(q4) == 'bar = 10 # buzz'
assert '{:S}'.format(q4) == 'bar = 10 % # buzz'
class Derived(Quantity):
pass
Derived.set_prefs(prec=8)
mu = Derived('mu0')
assert mu.render() == '1.25663706 uH/m'
Derived.set_prefs(prec=None)
assert mu.render() == '1.2566 uH/m'
q = Quantity('Tclk = 10ns -- clock period')
assert q.render(show_label=True) == 'Tclk = 10 ns # clock period'
q = Quantity('Tclk = 10ns')
assert q.render(show_label=True) == 'Tclk = 10 ns'
assert q.is_close(1e-8) is True
assert q.is_close(1.001e-8) is False
add_constant(
Quantity('F_hy = 1420405751.786 Hz -- frequency of hydrogen line'))
h_line = Quantity('F_hy')
assert h_line.render(
show_label=True) == 'F_hy = 1.4204 GHz # frequency of hydrogen line'
h_line2 = Quantity(h_line, h_line)
assert h_line2.render(
show_label=True) == 'F_hy = 1.4204 GHz # frequency of hydrogen line'
h_line3 = Quantity(1 * h_line, h_line)
assert h_line3.render(show_label=True) == '1.4204 GHz'
h_line4 = Quantity(1420405751.786, 'F_hy Hz frequency of hydrogen line')
assert h_line4.render(
show_label=True) == 'F_hy = 1.4204 GHz # frequency of hydrogen line'
size = Quantity('100k', 'B')
assert size.render() == '100 kB'
f1 = Quantity('1GHz')
f2 = Quantity('1GOhms')
assert f1.is_close(f1) == True
assert f1.is_close(f2) == False
assert f1.is_close(f1 + 1) == True
assert f1.is_close(f1 + 1e6) == False
p = Quantity('3_1_4_1.592_65_36mRads')
assert p.render() == '3.1416 Rads'
Quantity.set_prefs(known_units='au pc')
d1 = Quantity('1 au')
d2 = Quantity('1000 pc')
assert d1.render(show_si=False) == '1 au'
assert d2.render() == '1 kpc'
p = Quantity.get_pref(name='known_units')
assert ' '.join(p) == 'au pc'
if sys.version_info.major == 3:
class Foo(Quantity):
pass
t = Foo('1us')
assert Foo.get_pref('map_sf') == {}
assert Quantity.get_pref('map_sf') == {}
Foo.set_prefs(map_sf=Foo.map_sf_to_greek)
assert t.render() == '1 μs'
assert Foo.get_pref('map_sf') == Foo.map_sf_to_greek
assert Quantity.get_pref('map_sf') == {}
Foo.set_prefs(map_sf=Quantity.map_sf_to_sci_notation)
assert t.render(show_si=False) == '1×10⁻⁶ s'
assert Foo.get_pref('map_sf') == Foo.map_sf_to_sci_notation
assert Quantity.get_pref('map_sf') == {}
Quantity.set_prefs(label_fmt_full='{V:<18} # {d}',
label_fmt='{n} = {v}',
show_desc=True)
T = Quantity('T = 300K -- ambient temperature', ignore_sf=True)
k = Quantity('k')
q = Quantity('q')
Vt = Quantity(k * T / q, 'Vt V thermal voltage')
result = '{:S}\n{:S}\n{:S}\n{:S}'.format(T, k, q, Vt)
expected = dedent("""
T = 300 K # ambient temperature
k = 13.806e-24 J/K # Boltzmann's constant
q = 160.22e-21 C # elementary charge
Vt = 25.852 mV # thermal voltage
""").strip()
assert result == expected
result = '{:Q}\n{:R}\n{:E}\n{:G}'.format(T, k, q, Vt)
expected = dedent("""
T = 300 K # ambient temperature
k = 13.806e-24 # Boltzmann's constant
q = 1.6022e-19 # elementary charge
Vt = 0.025852 # thermal voltage
""").strip()
assert result == expected
Quantity.set_prefs(label_fmt_full='{V:<18} # {d}',
label_fmt='{n}: {v}',
show_desc=True)
result = '{:S}\n{:S}\n{:S}\n{:S}'.format(T, k, q, Vt)
expected = dedent("""
T: 300 K # ambient temperature
k: 13.806e-24 J/K # Boltzmann's constant
q: 160.22e-21 C # elementary charge
Vt: 25.852 mV # thermal voltage
""").strip()
assert result == expected
processed = Quantity.all_from_conv_fmt('1420405751.786Hz', show_si=True)
assert processed == '1.4204 GHz'
processed = Quantity.all_from_conv_fmt('1.420405751786e9Hz', show_si=True)
assert processed == '1.4204 GHz'
processed = Quantity.all_from_si_fmt('1420.405751786MHz', show_si=False)
assert processed == '1.4204e9 Hz'
processed = Quantity.all_from_si_fmt('1420405751.786_Hz', show_si=False)
assert processed == '1.4204e9 Hz'
if sys.version_info.major == 3:
# spacer is non-breaking space
processed = Quantity.all_from_conv_fmt('1420405751.786 Hz',
show_si=True)
assert processed == '1.4204 GHz'
q = Quantity('3.45e6 m·s⁻²')
assert q.render() == '3.45 Mm·s⁻²'
q = Quantity('accel = 3.45e6 m·s⁻² -- acceleration')
assert q.render() == '3.45 Mm·s⁻²'
processed = Quantity.all_from_si_fmt('0s', show_si=True)
assert processed == '0 s'
# test input_sf
Quantity.set_prefs(input_sf='GMk', unity_sf='_', spacer='')
assert Quantity('10m').render(show_si=False) == '10_m'
Quantity.set_prefs(input_sf=None, unity_sf='_')
assert Quantity('10m').render(show_si=False) == '10e-3'
with pytest.raises(ValueError):
Quantity.set_prefs(input_sf='GMkwq', unity_sf='_', spacer='')
Quantity.set_prefs(input_sf=None, unity_sf=None, spacer=None)
# test map_sf
if sys.version_info.major == 3:
Quantity.set_prefs(map_sf=Quantity.map_sf_to_greek)
assert Quantity('10e-6 m').render() == '10 μm'
Quantity.set_prefs(map_sf=Quantity.map_sf_to_sci_notation)
assert Quantity('10e-6 m').render() == '10 μm'
assert Quantity('10e-6 m').render(show_si=False) == '10×10⁻⁶ m'
Quantity.set_prefs(map_sf=None)
sf_map = {
'u': ' PPM',
'n': ' PPB',
'p': ' PPT',
'f': ' PPQ',
}
with Quantity.prefs(map_sf=sf_map):
assert Quantity('10e-6').render() == '10 PPM'
assert Quantity('1e-7').render() == '100 PPB'
assert Quantity('1e-12').render() == '1 PPT'
assert Quantity('1e-13').render() == '100 PPQ'
# test set_prefs error handling
with pytest.raises(KeyError):
Quantity.set_prefs(fuzz=True)
with pytest.raises(KeyError):
fuzz = Quantity.get_pref('fuzz')
c = Quantity('c')
Quantity.set_prefs(label_fmt=None, label_fmt_full=None)
Quantity.set_prefs(show_label=False, show_desc=False)
assert str(c) == '299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c = 299.79 Mm/s'
assert c.render() == '299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c = 299.79 Mm/s'
assert c.render(show_label='f') == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c = 299.79 Mm/s'
Quantity.set_prefs(show_label=True)
assert str(c) == 'c = 299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c = 299.79 Mm/s'
assert c.render() == 'c = 299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c = 299.79 Mm/s'
assert c.render(show_label='f') == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c = 299.79 Mm/s'
Quantity.set_prefs(show_label='f')
assert str(c) == 'c = 299.79 Mm/s -- speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c = 299.79 Mm/s'
assert c.render() == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c = 299.79 Mm/s'
assert c.render(show_label='f') == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c = 299.79 Mm/s'
Quantity.set_prefs(label_fmt='{n}: {v}', label_fmt_full='{n}: {v} -- {d}')
Quantity.set_prefs(show_label=False, show_desc=False)
assert str(c) == '299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s'
assert c.render() == '299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s'
assert c.render(show_label='f') == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label=True)
assert str(c) == 'c: 299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s'
assert c.render() == 'c: 299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s'
assert c.render(show_label='f') == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label='f')
assert str(c) == 'c: 299.79 Mm/s -- speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s'
assert c.render() == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s'
assert c.render(show_label='f') == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(label_fmt='{n}: {v}', label_fmt_full='{V} // {d}')
Quantity.set_prefs(show_label=False, show_desc=True)
assert str(c) == '299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s // speed of light'
assert c.render() == '299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='f') == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label=True)
assert str(c) == 'c: 299.79 Mm/s // speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s // speed of light'
assert c.render() == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='f') == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label='f')
assert str(c) == 'c: 299.79 Mm/s // speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s // speed of light'
assert c.render() == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='f') == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
mvi_raw_conv = '''
Status @ 0.00000000e+00s: Tests started for mylib.sh:MiM.
Assertion successfully detects expected fault @ 1.00013334e-04s in sh_tb.REF (sh): 'V(cm)' out of range.
Assertion successfully detects expected fault @ 1.00123334e-04s in sh_tb.REF (sh): 'V(cm)' out of range.
Status @ 2.00500000e-04s: in_val = 5.000000e-01.
Pass @ 3.00500000e-04s: V(out) voltage: expected=2.00000000e+00V, measured=1.99999965e+00V, diff=3.46117130e-07V.
Status @ 3.00500000e-04s: in_val = 7.500000e-01.
Pass @ 4.00500000e-04s: V(out) voltage: expected=1.75000000e+00V, measured=1.74999966e+00V, diff=3.41027651e-07V.
Status @ 4.00500000e-04s: in_val = 1.000000e+00.
Pass @ 5.00500000e-04s: V(out) voltage: expected=1.50000000e+00V, measured=1.49999944e+00V, diff=5.55270307e-07V.
Status @ 5.00500000e-04s: in_val = 1.250000e+00.
Pass @ 6.00500000e-04s: V(out) voltage: expected=1.25000000e+00V, measured=1.25000000e+00V, diff=1.26565425e-14V.
Status @ 6.00500000e-04s: in_val = 1.500000e+00.
Pass @ 7.00500000e-04s: V(out) voltage: expected=1.00000000e+00V, measured=9.99999924e-01V, diff=7.59200380e-08V.
Status @ 7.00500000e-04s: in_val = 1.750000e+00.
Pass @ 8.00500000e-04s: V(out) voltage: expected=7.50000000e-01V, measured=7.50017054e-01V, diff=1.70539238e-05V.
Status @ 8.00500000e-04s: in_val = 2.000000e+00.
FAIL @ 9.00500000e-04s: V(out) voltage: expected=5.00000000e-01V, measured=5.48562457e-01V, diff=4.85624570e-02V.
Summary @ 9.00510000e-04s: 7 tests run, 1 failures detected, 0 faults detected, 0 test sequences skipped.
'''
mvi_raw_si = '''
Status @ 0s: Tests started for mylib.sh:MiM.
Assertion successfully detects expected fault @ 100.013334us in sh_tb.REF (sh): 'V(cm)' out of range.
Assertion successfully detects expected fault @ 100.123334us in sh_tb.REF (sh): 'V(cm)' out of range.
Status @ 200.5us: in_val = 500m.
Pass @ 300.5us: V(out) voltage: expected=2V, measured=1.99999965V, diff=346.11713nV.
Status @ 300.5us: in_val = 750m.
Pass @ 400.5us: V(out) voltage: expected=1.75V, measured=1.74999966V, diff=341.027651nV.
Status @ 400.5us: in_val = 1.
Pass @ 500.5us: V(out) voltage: expected=1.5V, measured=1.49999944V, diff=555.270307nV.
Status @ 500.5us: in_val = 1.25.
Pass @ 600.5us: V(out) voltage: expected=1.25V, measured=1.25V, diff=12.6565425fV.
Status @ 600.5us: in_val = 1.5.
Pass @ 700.5us: V(out) voltage: expected=1V, measured=999.999924mV, diff=75.920038nV.
Status @ 700.5us: in_val = 1.75.
Pass @ 800.5us: V(out) voltage: expected=750mV, measured=750.017054mV, diff=17.0539238uV.
Status @ 800.5us: in_val = 2.
FAIL @ 900.5us: V(out) voltage: expected=500mV, measured=548.562457mV, diff=48.562457mV.
Summary @ 900.51us: 7 tests run, 1 failures detected, 0 faults detected, 0 test sequences skipped.
'''
mvi_conv = '''
Status @ 0 s: Tests started for mylib.sh:MiM.
Assertion successfully detects expected fault @ 100.01e-6 s in sh_tb.REF (sh): 'V(cm)' out of range.
Assertion successfully detects expected fault @ 100.12e-6 s in sh_tb.REF (sh): 'V(cm)' out of range.
Status @ 200.5e-6 s: in_val = 500e-3.
Pass @ 300.5e-6 s: V(out) voltage: expected=2 V, measured=2 V, diff=346.12e-9 V.
Status @ 300.5e-6 s: in_val = 750e-3.
Pass @ 400.5e-6 s: V(out) voltage: expected=1.75 V, measured=1.75 V, diff=341.03e-9 V.
Status @ 400.5e-6 s: in_val = 1.
Pass @ 500.5e-6 s: V(out) voltage: expected=1.5 V, measured=1.5 V, diff=555.27e-9 V.
Status @ 500.5e-6 s: in_val = 1.25.
Pass @ 600.5e-6 s: V(out) voltage: expected=1.25 V, measured=1.25 V, diff=12.657e-15 V.
Status @ 600.5e-6 s: in_val = 1.5.
Pass @ 700.5e-6 s: V(out) voltage: expected=1 V, measured=1 V, diff=75.92e-9 V.
Status @ 700.5e-6 s: in_val = 1.75.
Pass @ 800.5e-6 s: V(out) voltage: expected=750e-3 V, measured=750.02e-3 V, diff=17.054e-6 V.
Status @ 800.5e-6 s: in_val = 2.
FAIL @ 900.5e-6 s: V(out) voltage: expected=500e-3 V, measured=548.56e-3 V, diff=48.562e-3 V.
Summary @ 900.51e-6 s: 7 tests run, 1 failures detected, 0 faults detected, 0 test sequences skipped.
'''
mvi_conv_full = '''
Status @ 0 s: Tests started for mylib.sh:MiM.
Assertion successfully detects expected fault @ 100.013334e-6 s in sh_tb.REF (sh): 'V(cm)' out of range.
Assertion successfully detects expected fault @ 100.123334e-6 s in sh_tb.REF (sh): 'V(cm)' out of range.
Status @ 200.5e-6 s: in_val = 500e-3.
Pass @ 300.5e-6 s: V(out) voltage: expected=2 V, measured=1.99999965 V, diff=346.11713e-9 V.
Status @ 300.5e-6 s: in_val = 750e-3.
Pass @ 400.5e-6 s: V(out) voltage: expected=1.75 V, measured=1.74999966 V, diff=341.027651e-9 V.
Status @ 400.5e-6 s: in_val = 1.
Pass @ 500.5e-6 s: V(out) voltage: expected=1.5 V, measured=1.49999944 V, diff=555.270307e-9 V.
Status @ 500.5e-6 s: in_val = 1.25.
Pass @ 600.5e-6 s: V(out) voltage: expected=1.25 V, measured=1.25 V, diff=12.6565425e-15 V.
Status @ 600.5e-6 s: in_val = 1.5.
Pass @ 700.5e-6 s: V(out) voltage: expected=1 V, measured=999.999924e-3 V, diff=75.920038e-9 V.
Status @ 700.5e-6 s: in_val = 1.75.
Pass @ 800.5e-6 s: V(out) voltage: expected=750e-3 V, measured=750.017054e-3 V, diff=17.0539238e-6 V.
Status @ 800.5e-6 s: in_val = 2.
FAIL @ 900.5e-6 s: V(out) voltage: expected=500e-3 V, measured=548.562457e-3 V, diff=48.562457e-3 V.
Summary @ 900.51e-6 s: 7 tests run, 1 failures detected, 0 faults detected, 0 test sequences skipped.
'''
mvi_si = '''
Status @ 0 s: Tests started for mylib.sh:MiM.
Assertion successfully detects expected fault @ 100.01 us in sh_tb.REF (sh): 'V(cm)' out of range.
Assertion successfully detects expected fault @ 100.12 us in sh_tb.REF (sh): 'V(cm)' out of range.
Status @ 200.5 us: in_val = 500m.
Pass @ 300.5 us: V(out) voltage: expected=2 V, measured=2 V, diff=346.12 nV.
Status @ 300.5 us: in_val = 750m.
Pass @ 400.5 us: V(out) voltage: expected=1.75 V, measured=1.75 V, diff=341.03 nV.
Status @ 400.5 us: in_val = 1.
Pass @ 500.5 us: V(out) voltage: expected=1.5 V, measured=1.5 V, diff=555.27 nV.
Status @ 500.5 us: in_val = 1.25.
Pass @ 600.5 us: V(out) voltage: expected=1.25 V, measured=1.25 V, diff=12.657 fV.
Status @ 600.5 us: in_val = 1.5.
Pass @ 700.5 us: V(out) voltage: expected=1 V, measured=1 V, diff=75.92 nV.
Status @ 700.5 us: in_val = 1.75.
Pass @ 800.5 us: V(out) voltage: expected=750 mV, measured=750.02 mV, diff=17.054 uV.
Status @ 800.5 us: in_val = 2.
FAIL @ 900.5 us: V(out) voltage: expected=500 mV, measured=548.56 mV, diff=48.562 mV.
Summary @ 900.51 us: 7 tests run, 1 failures detected, 0 faults detected, 0 test sequences skipped.
'''
mvi_si_full = '''
Status @ 0 s: Tests started for mylib.sh:MiM.
Assertion successfully detects expected fault @ 100.013334 us in sh_tb.REF (sh): 'V(cm)' out of range.
Assertion successfully detects expected fault @ 100.123334 us in sh_tb.REF (sh): 'V(cm)' out of range.
Status @ 200.5 us: in_val = 500m.
Pass @ 300.5 us: V(out) voltage: expected=2 V, measured=1.99999965 V, diff=346.11713 nV.
Status @ 300.5 us: in_val = 750m.
Pass @ 400.5 us: V(out) voltage: expected=1.75 V, measured=1.74999966 V, diff=341.027651 nV.
Status @ 400.5 us: in_val = 1.
Pass @ 500.5 us: V(out) voltage: expected=1.5 V, measured=1.49999944 V, diff=555.270307 nV.
Status @ 500.5 us: in_val = 1.25.
Pass @ 600.5 us: V(out) voltage: expected=1.25 V, measured=1.25 V, diff=12.6565425 fV.
Status @ 600.5 us: in_val = 1.5.
Pass @ 700.5 us: V(out) voltage: expected=1 V, measured=999.999924 mV, diff=75.920038 nV.
Status @ 700.5 us: in_val = 1.75.
Pass @ 800.5 us: V(out) voltage: expected=750 mV, measured=750.017054 mV, diff=17.0539238 uV.
Status @ 800.5 us: in_val = 2.
FAIL @ 900.5 us: V(out) voltage: expected=500 mV, measured=548.562457 mV, diff=48.562457 mV.
Summary @ 900.51 us: 7 tests run, 1 failures detected, 0 faults detected, 0 test sequences skipped.
'''
processed = Quantity.all_from_conv_fmt(mvi_raw_conv, show_si=True)
assert processed == mvi_si
processed = Quantity.all_from_conv_fmt(mvi_raw_conv, show_si=False)
assert processed == mvi_conv
processed = Quantity.all_from_conv_fmt(mvi_raw_conv,
show_si=True,
prec='full')
assert processed == mvi_si_full
processed = Quantity.all_from_conv_fmt(mvi_raw_conv,
show_si=False,
prec='full')
assert processed == mvi_conv_full
processed = Quantity.all_from_si_fmt(mvi_raw_si, show_si=True)
assert processed == mvi_si
processed = Quantity.all_from_si_fmt(mvi_raw_si, show_si=False)
assert processed == mvi_conv
processed = Quantity.all_from_si_fmt(mvi_raw_si, show_si=True, prec='full')
assert processed == mvi_si_full
processed = Quantity.all_from_si_fmt(mvi_raw_si,
show_si=False,
prec='full')
assert processed == mvi_conv_full
processed = Quantity.all_from_si_fmt(
'1420.40575MHz+1420.40575MHz+1420.40575MHz', show_si=True)
assert processed == '1.4204 GHz+1.4204 GHz+1.4204 GHz'
processed = Quantity.all_from_si_fmt(
'1420.40575MHz+abc+1420.40575MHz+abc+1420.40575MHz', show_si=True)
assert processed == '1.4204 GHz+abc+1.4204 GHz+abc+1.4204 GHz'
processed = Quantity.all_from_si_fmt('1420.40575e+6+1420.40575e+6',
show_si=True)
assert processed == '1420.40575e+6+1420.40575e+6'
def test_temperature():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
Quantity.set_prefs(ignore_sf=True)
if sys.version_info.major == 3:
q = Quantity('100 °C')
assert q.render() == '100 °C'
assert q.render(scale='C') == '100 C'
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='F') == '212 F'
assert q.render(scale='°R') == '671.67 °R'
assert q.render(scale='R') == '671.67 R'
q = Quantity('100 C')
assert q.render() == '100 C'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='F') == '212 F'
assert q.render(scale='R') == '671.67 R'
if sys.version_info.major == 3:
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='°R') == '671.67 °R'
q = Quantity('373.15 K')
assert q.render() == '373.15 K'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='F') == '212 F'
assert q.render(scale='R') == '671.67 R'
if sys.version_info.major == 3:
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='°R') == '671.67 °R'
if sys.version_info.major == 3:
q = Quantity('212 °F')
assert q.render() == '212 °F'
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
#assert q.render(scale='°F') == '212 °F'
#assert q.render(scale='F') == '212 F'
#assert q.render(scale='°R') == '671.67 °R'
#assert q.render(scale='R') == '671.67 R'
q = Quantity('212 F')
assert q.render() == '212 F'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
if sys.version_info.major == 3:
assert q.render(scale='°C') == '100 °C'
#assert q.render(scale='°F') == '212 °F'
#assert q.render(scale='F') == '212 F'
#assert q.render(scale='°R') == '671.67 °R'
#assert q.render(scale='R') == '671.67 R'
if sys.version_info.major == 3:
q = Quantity('100 °C', scale='K')
assert q.render() == '373.15 K'
q = Quantity('212 °F', scale='K')
assert q.render() == '373.15 K'
q = Quantity('212 °F', scale='C')
assert q.render() == '100 C'
q = Quantity('212 F', scale='°C')
assert q.render() == '100 °C'
q = Quantity('491.67 R', scale='°C')
assert q.is_close(Quantity('0 °C'))
q = Quantity('491.67 R', scale='K')
assert q.render() == '273.15 K'
def test_simple_scaling():
Quantity.reset_prefs()
with Quantity.prefs(
spacer=None, show_label=None, label_fmt=None, label_fmt_full=None
):
q=Quantity('1kg', scale=2)
qs=Quantity('2ms')
assert q.render() == '2 kg'
assert qs.render() == '2 ms'
assert q.render(scale=0.001) == '2 g'
assert str(q.scale(0.001)) == '2 g'
assert q.render(scale=qs) == '4 g'
assert str(q.scale(qs)) == '4 g'
with pytest.raises(KeyError) as exception:
q.render(scale='fuzz')
assert str(exception.value) == "unable to convert between 'fuzz' and 'g'."
assert isinstance(exception.value, UnknownConversion)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, KeyError)
assert exception.value.args == ('fuzz', 'g')
with pytest.raises(KeyError) as exception:
q.scale('fuzz')
assert str(exception.value) == "unable to convert between 'fuzz' and 'g'."
assert isinstance(exception.value, UnknownConversion)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, KeyError)
assert exception.value.args == ('fuzz', 'g')
q=Quantity('1', units='g', scale=1000)
assert q.render() == '1 kg'
assert q.render(scale=(0.0022046, 'lbs')) == '2.2046 lbs'
assert str(q.scale((0.0022046, 'lbs'))) == '2.2046 lbs'
q=Quantity('1', units='g', scale=qs)
assert q.render() == '2 mg'
q=Quantity('1', scale=(1000, 'g'))
assert q.render() == '1 kg'
assert q.render(scale=lambda v, u: (0.0022046*v, 'lbs')) == '2.2046 lbs'
def dB(v, u):
return 20*math.log(v, 10), 'dB'+u
def adB(v, u):
return pow(10, v/20), u[2:] if u.startswith('dB') else u
q=Quantity('-40 dBV', scale=adB)
assert q.render() == '10 mV'
assert q.render(scale=dB) == '-40 dBV'
assert str(q.scale(dB)) == '-40 dBV'
def test_distance():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
Quantity.set_prefs(ignore_sf=False)
q = Quantity('1_m')
assert q.render() == '1 m'
assert q.render(scale='cm', show_si=False) == '100 cm'
assert q.render(scale='mm', show_si=False) == '1e3 mm'
assert q.render(scale='um', show_si=False) == '1e6 um'
assert q.render(scale='μm', show_si=False) == '1e6 μm'
assert q.render(scale='nm', show_si=False) == '1e9 nm'
if sys.version_info.major == 3:
assert q.render(scale='Å', show_si=False) == '10e9 Å'
assert q.render(scale='angstrom', show_si=False) == '10e9 angstrom'
assert q.render(scale='mi') == '621.37 umi'
assert q.render(scale='mile') == '621.37 umile'
assert q.render(scale='miles') == '621.37 umiles'
q = Quantity('1_m')
assert q.render() == '1 m'
q = Quantity('100cm', scale='m')
assert q.render() == '1 m'
q = Quantity('1cm', scale='m')
assert q.render() == '10 mm'
q = Quantity('1000mm', scale='m')
assert q.render() == '1 m'
q = Quantity('1mm', scale='m')
assert q.render() == '1 mm'
q = Quantity('1000000um', scale='m')
assert q.render() == '1 m'
q = Quantity('1um', scale='m')
assert q.render() == '1 um'
if sys.version_info.major == 3:
q = Quantity('1000000μm', scale='m')
assert q.render() == '1 m'
q = Quantity('1μm', scale='m')
assert q.render() == '1 um'
q = Quantity('1000000000nm', scale='m')
assert q.render() == '1 m'
q = Quantity('1nm', scale='m')
assert q.render() == '1 nm'
if sys.version_info.major == 3:
q = Quantity('10000000000Å', scale='m')
assert q.render() == '1 m'
q = Quantity('1Å', scale='m')
assert q.render() == '100 pm'
q = Quantity('1_mi', scale='m')
assert q.render() == '1.6093 km'
q = Quantity('1_mile', scale='m')
assert q.render() == '1.6093 km'
q = Quantity('1_miles', scale='m')
assert q.render() == '1.6093 km'
q = Quantity('d = 93 Mmiles -- average distance from Sun to Earth',
scale='m')
assert q.render() == '149.67 Gm'
def to_rkm(q, prec=None, show_units=None, strip_zeros=None, strip_code=None):
'''To RKM
Convert a quantiphy.Quantity to an RKM string.
Args:
q (quantiphy.Quantity, str, or float):
The value to be converted to an RKM code.
prec (int):
The precision. The number of digits is the precision + 1.
show_units (bool):
Whether and where the units should be included in the RKM code
(default is False).
strip_zeros (bool):
Whether excess zeros should be removed (default is True).
strip_code (bool):
Whether the base code should be removed from the end of the RKM code
(eg: 470 → 470 if true and 470r otherwise).
Returns:
A quantiphy.Quantity if a valid RKM code was found, otherwise *None* is
returned.
'''
if show_units is None:
show_units = _show_units
if strip_zeros is None:
strip_zeros = _strip_zeros
if strip_code is None:
strip_code = _strip_code
if prec is None:
prec = _prec
try:
units = q.units
except AttributeError:
q = Quantity(q)
units = q.units
rkm_base_code = _units_to_rkm_base_code.get(units, units)
if not rkm_base_code:
rkm_base_code = 'd'
if not show_units:
units = ''
with q.prefs(
map_sf={},
show_units=False,
strip_zeros=False,
strip_radix=False,
prec=prec
):
value = q.render(form='si')
if 'e-' in value:
value = q.render(form='fixed')
is_negative = value.startswith('-')
if is_negative:
value = value[1:]
sf = value[-1]
if sf and sf in q.output_sf:
value = value[:-1]
elif units:
sf = ''
else:
sf = rkm_base_code
if '.' not in value:
value += '.'
if strip_zeros:
value = value.rstrip('0')
if value.startswith('0.') and value[-1] != '.':
value = value[1:]
if not sf:
if units:
sf = units
units = ''
else:
sf = rkm_base_code
if strip_code and sf == rkm_base_code:
value = value.rstrip('.')
if is_negative:
value = '-' + value
value = value.replace('-', _minus_sign)
return value.replace('.', _map_sf.get(sf, sf)+units)
def test_writer():
q = Quantity('mem = 1GiB', binary=True)
res = str(q)
exp = '1.0737 GB'
assert res == exp, res
res = q.binary()
exp = '1 GiB'
assert res == exp, res
res = q.render(form='binary')
exp = '1 GiB'
assert res == exp, res
res = '{q:b}'.format(**locals())
exp = '1 GiB'
assert res == exp, res
res = q.binary(prec=2, strip_zeros=False)
exp = '1.00 GiB'
assert res == exp, res
res = '{q:#0.2b}'.format(**locals())
exp = '1.00 GiB'
assert res == exp, res
res = q.binary(show_label=True)
exp = 'mem = 1 GiB'
assert res == exp, res
res = '{q:B}'.format(**locals())
exp = 'mem = 1 GiB'
assert res == exp, res
res = q.binary(show_label=True, scale='b')
exp = 'mem = 8 Gib'
assert res == exp, res
res = '{q:Bb}'.format(**locals())
exp = 'mem = 8 Gib'
assert res == exp, res
res = q.binary(strip_zeros=False)
exp = '1.0000 GiB'
assert res == exp, res
res = '{q:#b}'.format(**locals())
exp = '1.0000 GiB'
assert res == exp, res
res = q.binary(strip_zeros=True, strip_radix=False)
exp = '1. GiB'
assert res == exp, res
q = Quantity('1GB', binary=True)
res = str(q)
exp = '1 GB'
assert res == exp, res
res = q.binary()
exp = '953.67 MiB'
assert res == exp, res
res = '{q:b}'.format(**locals())
exp = '953.67 MiB'
assert res == exp, res
res = q.binary(prec=2)
exp = '954 MiB'
assert res == exp, res
res = '{q:0.2b}'.format(**locals())
exp = '954 MiB'
assert res == exp, res
def test_scale():
Quantity.reset_prefs()
secs = Quantity('86400 s')
days = secs.scale('day')
assert secs.render() == '86.4 ks'
assert days.render() == '1 day'
def test_render():
Quantity.set_prefs(
spacer = None,
show_label = None,
label_fmt = None,
label_fmt_full = None,
show_desc = False,
prec = 4,
strip_zeros = True,
)
q=Quantity('f = 1420.405751786 MHz -- frequency of hydrogen line')
assert q.render() == '1.4204 GHz'
assert q.render(prec=8) == '1.42040575 GHz'
assert q.render(prec=8, show_label=True) == 'f = 1.42040575 GHz'
assert q.render(show_units=False) == '1.4204G'
assert q.render(show_units=False, show_label=True) == 'f = 1.4204G'
assert q.render(form='eng') == '1.4204e9 Hz'
assert q.render(form='eng', show_label=True) == 'f = 1.4204e9 Hz'
assert q.render(prec=15, strip_zeros=False) == '1.420405751786000 GHz'
assert q.render(prec=15, strip_zeros=True) == '1.420405751786 GHz'
assert q.units == 'Hz'
assert q.name == 'f'
assert q.desc == 'frequency of hydrogen line'
assert q.fixed() == '1420405751.786 Hz'
assert q.fixed(show_commas=True) == '1,420,405,751.786 Hz'
assert q.fixed(show_units=False) == '1420405751.786'
assert q.fixed(strip_zeros=True) == '1420405751.786 Hz'
assert q.fixed(strip_zeros=False) == '1420405751.7860 Hz'
assert q.fixed(show_label=True) == 'f = 1420405751.786 Hz'
assert q.fixed(show_label=True, show_commas=True) == 'f = 1,420,405,751.786 Hz'
assert q.render(form='fixed') == '1420405751.786 Hz'
q=Quantity('$1M')
assert q.render(strip_zeros=True) == '$1M'
assert q.render(strip_zeros=False) == '$1.0000M'
assert q.render(strip_zeros=True, strip_radix=False) == '$1M'
assert q.render(prec='full') == '$1M'
assert q.fixed(strip_zeros=True) == '$1000000'
assert q.fixed(strip_zeros=False) == '$1000000.0000'
assert q.fixed(strip_zeros=True, strip_radix=False) == '$1000000.'
assert q.fixed(prec='full') == '$1000000'
assert q.fixed(prec='full', strip_zeros=False) == '$1000000.000000000000'
assert q.render(form='fixed') == '$1000000'
q=Quantity('$100')
assert q.fixed(prec=0, strip_zeros=False, strip_radix=False) == '$100.'
assert q.fixed(prec=0, strip_zeros=True, strip_radix=False) == '$100.'
assert q.fixed(prec=0, strip_zeros=False, strip_radix=True) == '$100'
assert q.fixed(prec=0, strip_zeros=True, strip_radix=True) == '$100'
assert q.fixed(prec=2, strip_zeros=False, strip_radix=False) == '$100.00'
assert q.fixed(prec=2, strip_zeros=True, strip_radix=False) == '$100.'
assert q.fixed(prec=2, strip_zeros=False, strip_radix=True) == '$100.00'
assert q.fixed(prec=2, strip_zeros=True, strip_radix=True) == '$100'
def test_negligible():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
pn = Quantity('1nV')
nn = Quantity('-1nV')
pf = Quantity('1fV')
nf = Quantity('-1fV')
assert pn.render() == '1 nV'
assert nn.render() == '-1 nV'
assert pf.render() == '1 fV'
assert nf.render() == '-1 fV'
assert pn.render(negligible=1e-12) == '1 nV'
assert nn.render(negligible=1e-12) == '-1 nV'
assert pf.render(negligible=1e-12) == '0 V'
assert nf.render(negligible=1e-12) == '0 V'
with Quantity.prefs(negligible=1e-12):
assert pn.render() == '1 nV'
assert nn.render() == '-1 nV'
assert pf.render() == '0 V'
assert nf.render() == '0 V'
assert repr(pn) == "Quantity('1 nV')"
assert repr(nn) == "Quantity('-1 nV')"
assert repr(pf) == "Quantity('1 fV')"
assert repr(nf) == "Quantity('-1 fV')"
assert pn.render(negligible=1e-6) == '0 V'
assert nn.render(negligible=1e-6) == '0 V'
assert pf.render(negligible=1e-6) == '0 V'
assert nf.render(negligible=1e-6) == '0 V'
q = Quantity('-0')
assert q.render() == '-0'
assert q.render(negligible=0) == '0'
v = Quantity('1nV')
c = Quantity('1fA')
f = Quantity('1mHz')
k = Quantity('k')
u = Quantity(1e-9)
with Quantity.prefs():
assert v.render() == '1 nV'
assert c.render() == '1 fA'
assert f.render() == '1 mHz'
assert u.render() == '1n'
assert k.render() == '13.806e-24 J/K'
with Quantity.prefs(negligible=1e-6):
assert v.render() == '0 V'
assert c.render() == '0 A'
assert f.render() == '1 mHz'
assert u.render() == '0'
assert k.render() == '0 J/K'
with Quantity.prefs(negligible=dict(V=1e-6, A=1e-12, Hz=1)):
assert v.render() == '0 V'
assert c.render() == '0 A'
assert f.render() == '0 Hz'
assert u.render() == '1n'
assert k.render() == '13.806e-24 J/K'
with Quantity.prefs(negligible={
'V': 1e-6,
'A': 1e-12,
'Hz': 1,
None: 1e-12
}):
assert v.render() == '0 V'
assert c.render() == '0 A'
assert f.render() == '0 Hz'
assert u.render() == '1n'
assert k.render() == '0 J/K'
with Quantity.prefs(negligible={
'V': 1e-6,
'A': 1e-12,
'Hz': 1,
None: 1e-6
}):
assert v.render() == '0 V'
assert c.render() == '0 A'
assert f.render() == '0 Hz'
assert u.render() == '0'
assert k.render() == '0 J/K'
with Quantity.prefs(negligible={
'V': 1e-6,
'A': 1e-12,
'Hz': 1,
'': 1e-10,
None: 1e-12
}):
assert v.render() == '0 V'
assert c.render() == '0 A'
assert f.render() == '0 Hz'
assert u.render() == '1n'
assert k.render() == '0 J/K'
with Quantity.prefs(negligible={
'V': 1e-6,
'A': 1e-12,
'Hz': 1,
'': 1e-6,
None: 1e-12
}):
assert v.render() == '0 V'
assert c.render() == '0 A'
assert f.render() == '0 Hz'
assert u.render() == '0'
assert k.render() == '0 J/K'
given = 'Pass @ 3.40000006e-03s: V(atb) voltage: expected=0.00000000e+00V, measured=-8.60793065e-76V, diff=8.60793065e-76V.'
expected = 'Pass @ 3.4 ms: V(atb) voltage: expected=0 V, measured=-860.79e-78 V, diff=860.79e-78 V.'
got = Quantity.all_from_conv_fmt(given)
assert got == expected
expected = 'Pass @ 3.4 ms: V(atb) voltage: expected=0 V, measured=0 V, diff=0 V.'
got = Quantity.all_from_conv_fmt(given, negligible=1e-12)
assert got == expected
def test_misc2():
class Foo(Quantity):
pass
Foo.set_prefs(assign_rec=r'(?P<name>\w+)\s*=\s*(?P<val>.*)')
q = Foo('seven = 7')
assert q.name == 'seven'
assert str(q) == '7'
with pytest.raises(ValueError) as exception:
q = Foo('%')
assert str(exception.value) == '%: not a valid number.'
assert isinstance(exception.value, InvalidNumber)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, ValueError)
assert exception.value.args == ('%', )
assert exception.value.render(
template='bad number given ({!r})') == "bad number given ('%')"
assert exception.value.render(
template='bad number given') == "%: bad number given"
# the following is not kosher, but it should work
exception.value._template = 'bad number ({!r})'
assert str(exception.value) == "bad number ('%')"
assert repr(exception.value) == "InvalidNumber('%')"
with pytest.raises(ValueError):
exception.value.render(template=['{} {}', '{} {} {}'])
with pytest.raises(ValueError):
exception.value.render(template=['{a} {b}', '{a} {b} {c}'])
with pytest.raises(KeyError) as exception:
Foo.set_prefs(assign_rec=r'(\w+)\s*=\s*(.*)') # no named groups
Foo('seven = 7')
assert str(exception.value) == "recognizer does not contain 'val' key."
assert isinstance(exception.value, InvalidRecognizer)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, KeyError)
assert exception.value.args == ()
assert Foo.get_pref('prec') == 4
assert Foo.get_pref('full_prec') == 12
with Foo.prefs(prec=5, full_prec=13):
assert Foo.get_pref('prec') == 5
assert Foo.get_pref('full_prec') == 13
with Foo.prefs(prec=6, full_prec=14):
assert Foo.get_pref('prec') == 6
assert Foo.get_pref('full_prec') == 14
assert Foo.get_pref('prec') == 5
assert Foo.get_pref('full_prec') == 13
assert Foo.get_pref('prec') == 4
assert Foo.get_pref('full_prec') == 12
q = Quantity('1.8_V')
assert q.render(prec='full') == '1.8 V'
with pytest.raises(ValueError) as exception:
q = Quantity('x*y = z')
assert str(exception.value) == 'z: not a valid number.'
assert isinstance(exception.value, InvalidNumber)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, ValueError)
assert exception.value.args == ('z', )
# this used to be an ValueError because 'x*y' is not an identifier
vals = Quantity.extract('x*y = 1 m/s')
assert str(vals['x*y']) == '1 m/s'
# this used to be an ValueError because 'in' is a python keyword
vals = Quantity.extract('in = 1mA')
assert str(vals['in']) == '1 mA'
with pytest.raises(ValueError) as exception:
Quantity('x\ny = z')
assert str(exception.value) == 'z: not a valid number.'
assert isinstance(exception.value, InvalidNumber)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, ValueError)
assert exception.value.args == ('z', )
Quantity.set_prefs(label_fmt='{x}')
with pytest.raises(KeyError) as exception:
'{:S}'.format(Quantity('f = 1kHz'))
assert str(exception.value) == 'x: unknown format key.'
assert isinstance(exception.value, UnknownFormatKey)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, KeyError)
assert exception.value.args == ('x', )
Quantity.set_prefs(label_fmt_full='{n} = {v} # {d}',
label_fmt='{n} = {v}',
show_desc=True)
q1 = Quantity('10ns', name='trise')
q2 = Quantity('10ns', name='trise', desc='rise time')
assert '{:G}'.format(q1) == 'trise = 1e-08'
assert '{:G}'.format(q2) == 'trise = 1e-08 # rise time'
q3 = Quantity('10cm', name='foo')
q4 = Quantity('10%', name='bar', desc='buzz')
assert '{:G}'.format(q3) == 'foo = 0.1'
assert '{:G}'.format(q4) == 'bar = 10 # buzz'
assert '{:S}'.format(q4) == 'bar = 10% # buzz'
class Derived(Quantity):
pass
Derived.set_prefs(prec=8)
mu = Derived('mu0')
assert mu.render() == '1.25663706 uH/m'
Derived.set_prefs(prec=None)
assert mu.render() == '1.2566 uH/m'
q = Quantity('Tclk = 10ns -- clock period')
assert q.render(show_label=True) == 'Tclk = 10 ns # clock period'
q = Quantity('Tclk = 10ns')
assert q.render(show_label=True) == 'Tclk = 10 ns'
assert q.is_close(1e-8) is True
assert q.is_close(1.001e-8) is False
add_constant(
Quantity('F_hy = 1420405751.786 Hz -- frequency of hydrogen line'))
h_line = Quantity('F_hy')
assert h_line.render(
show_label=True) == 'F_hy = 1.4204 GHz # frequency of hydrogen line'
h_line2 = Quantity(h_line, h_line)
assert h_line2.render(
show_label=True) == 'F_hy = 1.4204 GHz # frequency of hydrogen line'
h_line3 = Quantity(1 * h_line, h_line)
assert h_line3.render(show_label=True) == '1.4204 GHz'
h_line4 = Quantity(1420405751.786, 'F_hy Hz frequency of hydrogen line')
assert h_line4.render(
show_label=True) == 'F_hy = 1.4204 GHz # frequency of hydrogen line'
size = Quantity('100k', 'B')
assert size.render() == '100 kB'
f1 = Quantity('1GHz')
f2 = Quantity('1GOhms')
assert f1.is_close(f1) is True
assert f1.is_close(f2) is False
assert f1.is_close(f1 + 1) is True
assert f1.is_close(f1 + 1e6) is False
p = Quantity('3_1_4_1.592_65_36mRads')
assert p.render() == '3.1416 Rads'
Quantity.set_prefs(known_units='au pc')
d1 = Quantity('1 au')
d2 = Quantity('1000 pc')
assert d1.render(form='eng') == '1 au'
assert d2.render() == '1 kpc'
p = Quantity.get_pref(name='known_units')
assert ' '.join(p) == 'au pc'
if sys.version_info.major == 3:
class Foo(Quantity):
pass
t = Foo('1us')
assert Foo.get_pref('map_sf') == {}
assert Quantity.get_pref('map_sf') == {}
Foo.set_prefs(map_sf=Foo.map_sf_to_greek)
assert t.render() == '1 µs'
assert Foo.get_pref('map_sf') == Foo.map_sf_to_greek
assert Quantity.get_pref('map_sf') == {}
Foo.set_prefs(map_sf=Quantity.map_sf_to_sci_notation)
assert t.render(form='eng') == '1×10⁻⁶ s'
assert t.render(form='si') == '1 µs'
assert Foo.get_pref('map_sf') == Foo.map_sf_to_sci_notation
assert Quantity.get_pref('map_sf') == {}
Quantity.set_prefs(label_fmt_full='{V:<18} # {d}',
label_fmt='{n} = {v}',
show_desc=True)
T = Quantity('T = 300K -- ambient temperature', ignore_sf=True)
k = Quantity('k')
q = Quantity('q')
Vt = Quantity(k * T / q, 'Vt V thermal voltage')
result = '{:S}\n{:S}\n{:S}\n{:S}'.format(T, k, q, Vt)
expected = dedent("""
T = 300 K # ambient temperature
k = 13.806e-24 J/K # Boltzmann's constant
q = 160.22e-21 C # elementary charge
Vt = 25.852 mV # thermal voltage
""").strip()
assert result == expected
result = '{:Q}\n{:R}\n{:E}\n{:G}'.format(T, k, q, Vt)
expected = dedent("""
T = 300 K # ambient temperature
k = 13.806e-24 # Boltzmann's constant
q = 1.6022e-19 # elementary charge
Vt = 0.025852 # thermal voltage
""").strip()
assert result == expected
Quantity.set_prefs(label_fmt_full='{V:<18} # {d}',
label_fmt='{n}: {v}',
show_desc=True)
result = '{:S}\n{:S}\n{:S}\n{:S}'.format(T, k, q, Vt)
expected = dedent("""
T: 300 K # ambient temperature
k: 13.806e-24 J/K # Boltzmann's constant
q: 160.22e-21 C # elementary charge
Vt: 25.852 mV # thermal voltage
""").strip()
assert result == expected
processed = Quantity.all_from_conv_fmt('1420405751.786Hz', form='si')
assert processed == '1.4204 GHz'
processed = Quantity.all_from_conv_fmt('1.420405751786e9Hz', form='si')
assert processed == '1.4204 GHz'
processed = Quantity.all_from_si_fmt('1420.405751786MHz', form='eng')
assert processed == '1.4204e9 Hz'
processed = Quantity.all_from_si_fmt('1420405751.786_Hz', form='eng')
assert processed == '1.4204e9 Hz'
if sys.version_info.major == 3:
# spacer is non-breaking space
processed = Quantity.all_from_conv_fmt('1420405751.786 Hz', form='si')
assert processed == '1.4204 GHz'
q = Quantity('3.45e6 m·s⁻²')
assert q.render() == '3.45 Mm·s⁻²'
q = Quantity('accel = 3.45e6 m·s⁻² -- acceleration')
assert q.render() == '3.45 Mm·s⁻²'
processed = Quantity.all_from_si_fmt('0s', form='si')
assert processed == '0 s'
# test input_sf
Quantity.set_prefs(input_sf='GMk', unity_sf='_', spacer='')
assert Quantity('10m').render(form='eng') == '10_m'
Quantity.set_prefs(input_sf=None, unity_sf='_')
assert Quantity('10m').render(form='eng') == '10e-3'
with pytest.raises(ValueError) as exception:
Quantity.set_prefs(input_sf='GMkwq', unity_sf='_', spacer='')
assert str(exception.value) == 'q, w: unknown scale factors.'
assert isinstance(exception.value, UnknownScaleFactor)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, ValueError)
assert exception.value.args == ('q', 'w')
assert repr(exception.value) == "UnknownScaleFactor('q', 'w')"
exception.value.render('{}, {}: unknown') == 'q, w: unknown'
Quantity.set_prefs(input_sf=None, unity_sf=None, spacer=None)
assert Quantity('10m').render(form='eng') == '10e-3'
Quantity.input_sf = 'GMkwq'
with pytest.raises(ValueError) as exception:
Quantity('10m')
assert str(exception.value) == 'q, w: unknown scale factors.'
assert isinstance(exception.value, UnknownScaleFactor)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, ValueError)
assert exception.value.args == ('q', 'w')
assert repr(exception.value) == "UnknownScaleFactor('q', 'w')"
exception.value.render('{}, {}: unknown') == 'q, w: unknown'
del Quantity.input_sf
# test map_sf
if sys.version_info.major == 3:
Quantity.set_prefs(map_sf=Quantity.map_sf_to_greek)
assert Quantity('10e-6 m').render() == '10 µm'
Quantity.set_prefs(map_sf=Quantity.map_sf_to_sci_notation)
assert Quantity('10e-6 m').render() == '10 µm'
assert Quantity('10e-6 m').render(form='eng') == '10×10⁻⁶ m'
Quantity.set_prefs(map_sf=None)
sf_map = {
'u': ' PPM',
'n': ' PPB',
'p': ' PPT',
'f': ' PPQ',
}
with Quantity.prefs(map_sf=sf_map):
assert Quantity('10e-6').render() == '10 PPM'
assert Quantity('1e-7').render() == '100 PPB'
assert Quantity('1e-12').render() == '1 PPT'
assert Quantity('1e-13').render() == '100 PPQ'
# test set_prefs error handling
with pytest.raises(KeyError) as exception:
Quantity.set_prefs(fuzz=True)
assert exception.value.args[0] == 'fuzz'
with pytest.raises(KeyError) as exception:
fuzz = Quantity.get_pref('fuzz')
assert str(exception.value) == 'fuzz: unknown preference.'
assert isinstance(exception.value, UnknownPreference)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, KeyError)
assert exception.value.args == ('fuzz', )
c = Quantity('c')
Quantity.set_prefs(label_fmt=None, label_fmt_full=None)
Quantity.set_prefs(show_label=False, show_desc=False)
assert str(c) == '299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c = 299.79 Mm/s'
assert c.render() == '299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c = 299.79 Mm/s'
assert c.render(show_label='f') == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c = 299.79 Mm/s'
Quantity.set_prefs(show_label=True)
assert str(c) == 'c = 299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c = 299.79 Mm/s'
assert c.render() == 'c = 299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c = 299.79 Mm/s'
assert c.render(show_label='f') == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c = 299.79 Mm/s'
Quantity.set_prefs(show_label='f')
assert str(c) == 'c = 299.79 Mm/s -- speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c = 299.79 Mm/s -- speed of light'
assert c.render() == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label='f') == 'c = 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c = 299.79 Mm/s'
Quantity.set_prefs(label_fmt='{n}: {v}', label_fmt_full='{n}: {v} -- {d}')
Quantity.set_prefs(show_label=False, show_desc=False)
assert str(c) == '299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s'
assert c.render() == '299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s'
assert c.render(show_label='f') == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label=True)
assert str(c) == 'c: 299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s'
assert c.render() == 'c: 299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s'
assert c.render(show_label='f') == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label='f')
assert str(c) == 'c: 299.79 Mm/s -- speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s -- speed of light'
assert c.render() == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label='f') == 'c: 299.79 Mm/s -- speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(label_fmt='{n}: {v}', label_fmt_full='{V} // {d}')
Quantity.set_prefs(show_label=False, show_desc=True)
assert str(c) == '299.79 Mm/s'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s // speed of light'
assert c.render() == '299.79 Mm/s'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='f') == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label=True)
assert str(c) == 'c: 299.79 Mm/s // speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s // speed of light'
assert c.render() == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='f') == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
Quantity.set_prefs(show_label='f')
assert str(c) == 'c: 299.79 Mm/s // speed of light'
assert '{:s}'.format(c) == '299.79 Mm/s'
assert '{:S}'.format(c) == 'c: 299.79 Mm/s // speed of light'
assert c.render() == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label=False) == '299.79 Mm/s'
assert c.render(show_label=True) == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='f') == 'c: 299.79 Mm/s // speed of light'
assert c.render(show_label='a') == 'c: 299.79 Mm/s'
def test_temperature():
Quantity.reset_prefs()
with Quantity.prefs(
spacer=None, show_label=None, label_fmt=None, label_fmt_full=None,
ignore_sf=True
):
q=Quantity('100 °C')
assert q.render() == '100 °C'
assert q.render(scale='C') == '100 C'
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='F') == '212 F'
assert q.render(scale='°R') == '671.67 °R'
assert q.render(scale='R') == '671.67 R'
q=Quantity('100 C')
assert q.render() == '100 C'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='F') == '212 F'
assert q.render(scale='R') == '671.67 R'
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='°R') == '671.67 °R'
q=Quantity('373.15 K')
assert q.render() == '373.15 K'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='F') == '212 F'
assert q.render(scale='R') == '671.67 R'
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='°R') == '671.67 °R'
q=Quantity('212 °F')
assert q.render() == '212 °F'
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='F') == '212 F'
#assert q.render(scale='°R') == '671.67 °R'
#assert q.render(scale='R') == '671.67 R'
q=Quantity('212 F')
assert q.render() == '212 F'
assert q.render(scale='C') == '100 C'
assert q.render(scale='K') == '373.15 K'
assert q.render(scale='°C') == '100 °C'
assert q.render(scale='°F') == '212 °F'
assert q.render(scale='F') == '212 F'
#assert q.render(scale='°R') == '671.67 °R'
#assert q.render(scale='R') == '671.67 R'
q=Quantity('100 °C', scale='K')
assert q.render() == '373.15 K'
q=Quantity('212 °F', scale='K')
assert q.render() == '373.15 K'
q=Quantity('212 °F', scale='C')
assert q.render() == '100 C'
q=Quantity('212 F', scale='°C')
assert q.render() == '100 °C'
q=Quantity('491.67 R', scale='°C')
assert q.is_close(Quantity('0 °C'))
q=Quantity('491.67 R', scale='K')
assert q.render() == '273.15 K'
def test_misc():
Quantity.reset_prefs()
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
q = Quantity(1420405751.786, 'Hz')
assert q.render(form='eng', show_units=False) == '1.4204e9'
t = Quantity('1420405751.786 Hz').as_tuple()
assert t == (1420405751.786, 'Hz')
t = Quantity('1420405751.786 Hz').render(form='si',
show_units=True,
prec='full')
assert t == '1.420405751786 GHz'
s = Quantity('1420405751.786 Hz').render(form='eng',
show_units=True,
prec='full')
assert s == '1.420405751786e9 Hz'
f = float(Quantity('1420405751.786 Hz'))
assert f == 1420405751.786
t = Quantity('1420405751.786 Hz').render(form='si', show_units=False)
assert t == '1.4204G'
s = Quantity('1420405751.786 Hz').render(form='eng', show_units=False)
assert s == '1.4204e9'
s = Quantity(1420405751.786, 'Hz').render(form='eng',
show_units=False,
prec='full')
assert s == '1.420405751786e9'
f = Quantity('14204.05751786MHz').render(form='si',
show_units=False,
prec='full')
assert f == '14.20405751786G'
q = Quantity('1420405751.786 Hz', units='HZ').render()
assert q == '1.4204 GHZ'
q = Quantity('1420405751.786 Hz')
assert q.is_nan() is None
q = Quantity('1420405751.786 Hz')
assert q.is_infinite() is None
q = Quantity('NaN Hz')
assert q.is_nan() == 'NaN'
q = Quantity('NaN Hz')
q.nan = 'nan'
assert q.is_nan() == 'nan'
q = Quantity('NaN Hz')
assert q.is_infinite() is None
q = Quantity('inf Hz')
assert q.is_nan() is None
q = Quantity('inf Hz')
assert q.is_infinite() == 'inf'
q = Quantity('inf Hz')
q.inf = '∞'
assert q.is_infinite() == '∞'
q = Quantity('∞ Hz')
assert q.is_infinite() == 'inf'
q = Quantity('$∞')
assert q.is_infinite() == 'inf'
q = Quantity('∞Ω')
assert q.is_infinite() == 'inf'
# check the various formats for assignment recognition
q = Quantity('f_hy = 1420405751.786 Hz — frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz — frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy: 1420405751.786 Hz # frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz — frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy = 1420405751.786 Hz // frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz — frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy = 1420405751.786 Hz')
assert q.render(show_label='f') == 'f_hy = 1.4204 GHz'
assert q.name == 'f_hy'
assert q.desc == ''
q = Quantity('1420405751.786 Hz // frequency of hydrogen line')
assert q.render(show_label='f') == '1.4204 GHz'
assert q.name == ''
assert q.desc == 'frequency of hydrogen line'
q = Quantity('1420405751.786 Hz')
assert q.render(show_label='f') == '1.4204 GHz'
assert q.name == ''
assert q.desc == ''
# check some exceptions
with pytest.raises(ValueError) as exception:
q = Quantity('f_hy = 1420405751;786 Hz')
assert str(exception.value) == '1420405751;786 Hz: not a valid number.'
assert isinstance(exception.value, InvalidNumber)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, ValueError)
assert exception.value.args == ('1420405751;786 Hz', )
# check some exceptions
with pytest.raises(ValueError) as exception:
q = Quantity('# nan')
assert str(exception.value) == '# nan: not a valid number.'
assert isinstance(exception.value, InvalidNumber)
assert isinstance(exception.value, QuantiPhyError)
assert isinstance(exception.value, ValueError)
assert exception.value.args == ('# nan', )
# check tight_units
q = Quantity('90°')
assert q.render() == '90°'
q = Quantity('80°F')
assert q.render() == '80 °F'
q = Quantity('80°F')
assert q.render() == '80 °F'
q.tight_units = '''' % ° ' " ′ ″ °F °C '''.split()
assert q.render() == '80°F'
def test_misc():
Quantity.set_prefs(spacer=None,
show_label=None,
label_fmt=None,
label_fmt_full=None)
q = Quantity(1420405751.786, 'Hz')
assert q.render(form='eng', show_units=False) == '1.4204e9'
t = Quantity('1420405751.786 Hz').as_tuple()
assert t == (1420405751.786, 'Hz')
t = Quantity('1420405751.786 Hz').render(form='si',
show_units=True,
prec='full')
assert t == '1.420405751786 GHz'
s = Quantity('1420405751.786 Hz').render(form='eng',
show_units=True,
prec='full')
assert s == '1.420405751786e9 Hz'
f = float(Quantity('1420405751.786 Hz'))
assert f == 1420405751.786
t = Quantity('1420405751.786 Hz').render(form='si', show_units=False)
assert t == '1.4204G'
s = Quantity('1420405751.786 Hz').render(form='eng', show_units=False)
assert s == '1.4204e9'
s = Quantity(1420405751.786, 'Hz').render(form='eng',
show_units=False,
prec='full')
assert s == '1.420405751786e9'
f = Quantity('14204.05751786MHz').render(form='si',
show_units=False,
prec='full')
assert f == '14.20405751786G'
q = Quantity('1420405751.786 Hz', units='HZ').render()
assert q == '1.4204 GHZ'
q = Quantity('1420405751.786 Hz')
assert q.is_nan() is None
q = Quantity('1420405751.786 Hz')
assert q.is_infinite() is None
q = Quantity('NaN Hz')
assert q.is_nan() == 'NaN'
q = Quantity('NaN Hz')
q.nan = 'nan'
assert q.is_nan() == 'nan'
q = Quantity('NaN Hz')
assert q.is_infinite() is None
q = Quantity('inf Hz')
assert q.is_nan() is None
q = Quantity('inf Hz')
assert q.is_infinite() == 'inf'
q = Quantity('inf Hz')
q.inf = '∞'
assert q.is_infinite() == '∞'
q = Quantity('∞ Hz')
assert q.is_infinite() == 'inf'
q = Quantity('$∞')
assert q.is_infinite() == 'inf'
q = Quantity('∞Ω')
assert q.is_infinite() == 'inf'
# check the various formats for assignment recognition
q = Quantity('f_hy = 1420405751.786 Hz -- frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz -- frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy: 1420405751.786 Hz # frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz -- frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy = 1420405751.786 Hz // frequency of hydrogen line')
assert q.render(
show_label='f') == 'f_hy = 1.4204 GHz -- frequency of hydrogen line'
assert q.name == 'f_hy'
assert q.desc == 'frequency of hydrogen line'
q = Quantity('f_hy = 1420405751.786 Hz')
assert q.render(show_label='f') == 'f_hy = 1.4204 GHz'
assert q.name == 'f_hy'
assert q.desc == ''
q = Quantity('1420405751.786 Hz // frequency of hydrogen line')
assert q.render(show_label='f') == '1.4204 GHz'
assert q.name == ''
assert q.desc == 'frequency of hydrogen line'
q = Quantity('1420405751.786 Hz')
assert q.render(show_label='f') == '1.4204 GHz'
assert q.name == ''
assert q.desc == ''
if py3:
# check tight_units
q = Quantity('90°')
assert q.render() == '90°'
q = Quantity('80°F')
assert q.render() == '80 °F'
q = Quantity('80°F')
assert q.render() == '80 °F'
q.tight_units = '''' % ° ' " ′ ″ °F °C '''.split()
assert q.render() == '80°F'
def test_distance():
Quantity.reset_prefs()
with Quantity.prefs(
spacer=None, show_label=None, label_fmt=None, label_fmt_full=None,
ignore_sf=False
):
q=Quantity('1_m')
assert q.render() == '1 m'
assert q.render(scale='cm', form='eng') == '100 cm'
assert q.render(scale='mm', form='eng') == '1e3 mm'
assert q.render(scale='um', form='eng') == '1e6 um'
assert q.render(scale='μm', form='eng') == '1e6 μm'
assert q.render(scale='nm', form='eng') == '1e9 nm'
assert q.render(scale='Å', form='eng') == '10e9 Å'
assert q.render(scale='angstrom', form='eng') == '10e9 angstrom'
assert q.render(scale='mi') == '621.37 umi'
assert q.render(scale='mile') == '621.37 umile'
assert q.render(scale='miles') == '621.37 umiles'
assert q.render(scale='in') == '39.37 in'
assert q.render(scale='inch') == '39.37 inch'
assert q.render(scale='inches') == '39.37 inches'
q=Quantity('1_m')
assert q.render() == '1 m'
q=Quantity('100cm', scale='m')
assert q.render() == '1 m'
q=Quantity('1cm', scale='m')
assert q.render() == '10 mm'
q=Quantity('1000mm', scale='m')
assert q.render() == '1 m'
q=Quantity('1mm', scale='m')
assert q.render() == '1 mm'
q=Quantity('1000000um', scale='m')
assert q.render() == '1 m'
q=Quantity('1um', scale='m')
assert q.render() == '1 um'
q=Quantity('1000000μm', scale='m')
assert q.render() == '1 m'
q=Quantity('1μm', scale='m')
assert q.render() == '1 um'
q=Quantity('1000000000nm', scale='m')
assert q.render() == '1 m'
q=Quantity('1nm', scale='m')
assert q.render() == '1 nm'
q=Quantity('10000000000Å', scale='m')
assert q.render() == '1 m'
q=Quantity('1Å', scale='m')
assert q.render() == '100 pm'
q=Quantity('1_mi', scale='m')
assert q.render() == '1.6093 km'
q=Quantity('1_mile', scale='m')
assert q.render() == '1.6093 km'
q=Quantity('1_miles', scale='m')
assert q.render() == '1.6093 km'
q=Quantity('d = 93 Mmiles -- average distance from Sun to Earth', scale='m')
assert q.render() == '149.67 Gm'