def test_find_unit():
assert find_unit('coulomb') == ['coulomb', 'coulombs', 'coulomb_constant']
assert find_unit(coulomb) == [
'C', 'coulomb', 'coulombs', 'planck_charge', 'elementary_charge'
]
assert find_unit(charge) == [
'C', 'coulomb', 'coulombs', 'planck_charge', 'elementary_charge'
]
assert find_unit(inch) == [
'm', 'au', 'cm', 'dm', 'ft', 'km', 'ly', 'mi', 'mm', 'nm', 'pm', 'um',
'yd', 'nmi', 'feet', 'foot', 'inch', 'mile', 'yard', 'meter', 'miles',
'yards', 'inches', 'meters', 'micron', 'microns', 'decimeter',
'kilometer', 'lightyear', 'nanometer', 'picometer', 'centimeter',
'decimeters', 'kilometers', 'lightyears', 'micrometer', 'millimeter',
'nanometers', 'picometers', 'centimeters', 'micrometers',
'millimeters', 'nautical_mile', 'planck_length', 'nautical_miles',
'astronomical_unit', 'astronomical_units'
]
assert find_unit(inch**-1) == ['D', 'dioptre', 'optical_power']
assert find_unit(length**-1) == ['D', 'dioptre', 'optical_power']
assert find_unit(inch**3) == [
'L', 'l', 'cL', 'cl', 'dL', 'dl', 'mL', 'ml', 'liter', 'quart',
'liters', 'quarts', 'deciliter', 'centiliter', 'deciliters',
'milliliter', 'centiliters', 'milliliters', 'planck_volume'
]
assert find_unit('voltage') == [
'V', 'v', 'volt', 'volts', 'planck_voltage'
]
def _get_unitName(self, id):
global units
if hasattr(units, id): return id
if hasattr(units, id.lower()): return id.lower()
candidates = units.find_unit(id)
if len(candidates) == 0:
raise ValueError("cannot find unit with name " + id)
if len(candidates) > 1:
raise ValueError("multiple possible units found for " + id)
return candidates[0]
def test_find_unit():
assert find_unit('coulomb') == ['coulomb', 'coulombs', 'coulomb_constant']
assert find_unit(coulomb) == [
'C', 'coulomb', 'coulombs', 'planck_charge', 'elementary_charge'
]
assert find_unit(charge) == [
'C', 'coulomb', 'coulombs', 'planck_charge', 'elementary_charge'
]
assert find_unit(inch) == [
'm', 'au', 'cm', 'dm', 'ft', 'km', 'ly', 'mi', 'mm', 'nm', 'pm', 'um',
'yd', 'nmi', 'feet', 'foot', 'inch', 'mile', 'yard', 'meter', 'miles',
'yards', 'inches', 'meters', 'micron', 'microns', 'decimeter',
'kilometer', 'lightyear', 'nanometer', 'picometer', 'centimeter',
'decimeters', 'kilometers', 'lightyears', 'micrometer', 'millimeter',
'nanometers', 'picometers', 'centimeters', 'micrometers',
'millimeters', 'nautical_mile', 'planck_length', 'nautical_miles',
'astronomical_unit', 'astronomical_units'
]
assert find_unit(inch**-1) == ['D', 'dioptre', 'optical_power']
assert find_unit(length**-1) == ['D', 'dioptre', 'optical_power']
assert find_unit(inch**2) == ['ha', 'hectare', 'planck_area']
assert find_unit(inch**3) == [
'L', 'l', 'cL', 'cl', 'dL', 'dl', 'mL', 'ml', 'liter', 'quart',
'liters', 'quarts', 'deciliter', 'centiliter', 'deciliters',
'milliliter', 'centiliters', 'milliliters', 'planck_volume'
]
assert find_unit('voltage') == [
'V', 'v', 'volt', 'volts', 'planck_voltage'
]
assert find_unit(grams) == [
'g', 't', 'Da', 'kg', 'mg', 'ug', 'amu', 'mmu', 'amus', 'gram', 'mmus',
'grams', 'pound', 'tonne', 'dalton', 'pounds', 'kilogram', 'kilograms',
'microgram', 'milligram', 'metric_ton', 'micrograms', 'milligrams',
'planck_mass', 'milli_mass_unit', 'atomic_mass_unit',
'atomic_mass_constant'
]
def test_find_unit():
assert find_unit('coulomb') == ['coulomb', 'coulombs', 'coulomb_constant']
assert find_unit(coulomb) == ['C', 'coulomb', 'coulombs', 'planck_charge']
assert find_unit(charge) == ['C', 'coulomb', 'coulombs', 'planck_charge']
assert find_unit(inch) == [
'm', 'au', 'cm', 'dm', 'ft', 'km', 'ly', 'mi', 'mm', 'nm', 'pm', 'um',
'yd', 'nmi', 'feet', 'foot', 'inch', 'mile', 'yard', 'meter', 'miles',
'yards', 'inches', 'meters', 'micron', 'microns', 'decimeter',
'kilometer', 'lightyear', 'nanometer', 'picometer', 'centimeter',
'decimeters', 'kilometers', 'lightyears', 'micrometer', 'millimeter',
'nanometers', 'picometers', 'centimeters', 'micrometers',
'millimeters', 'nautical_mile', 'planck_length', 'nautical_miles', 'astronomical_unit',
'astronomical_units']
assert find_unit(inch**-1) == ['D', 'dioptre', 'optical_power']
assert find_unit(length**-1) == ['D', 'dioptre', 'optical_power']
assert find_unit(inch ** 3) == [
'l', 'cl', 'dl', 'ml', 'liter', 'quart', 'liters', 'quarts',
'deciliter', 'centiliter', 'deciliters', 'milliliter',
'centiliters', 'milliliters', 'planck_volume']
assert find_unit('voltage') == ['V', 'v', 'volt', 'volts', 'planck_voltage']
from sympy.physics import units
# Convert 12 inches to meters
D = 12*float(units.inch/units.meter)
# Covert 0.2 mg/L to kg/m3
C = 0.2*float((units.mg/units.l)/(units.kg/units.m**3))
# Convert 30 psi to m (assuming density = 1000 kg/m3 and gravity = 9.81 m/s2)
if not units.find_unit('waterpressure'):
units.waterpressure = 9810*units.Pa
P = 30*float(units.psi/units.waterpressure)
# Convert 200 gallons/day to m3/day
if not units.find_unit('gallon'):
units.gallon = 4*units.quart
R = 200*float(units.gallon/units.m**3)
def test_find_unit():
assert find_unit('charge') == ['charge']
assert find_unit(charge) == ['C', 'charge', 'coulomb', 'coulombs']
from sympy.physics import units as u
a = 12. * u.inch / u.m
print(a)
##======================================================================
u.BTU = 1055.05585 * u.J
a = u.BTU
print('\n')
print(a)
##======================================================================
## find_unit('search_things')
##======================================================================
a = u.find_unit('coul')
print('{} {} {}'.format('u.find_unit_coul = ', a, ''))
b = u.find_unit(u.charge)
print('\n')
print(b)
##======================================================================
print("\n")
print(u.A.name)
print(u.ampere.abbrev)
print(u.find_unit('magnet'))
##======================================================================
print("\n")
def test_find_unit():
assert find_unit('charge') == ['charge']
assert find_unit(charge) == ['C', 'charge', 'coulomb', 'coulombs']
def test_find_unit():
assert find_unit("charge") == ["charge"]
assert find_unit(charge) == ["C", "charge", "coulomb", "coulombs"]
from sympy.physics import units
# Convert 12 inches to meters
D = 12 * float(units.inch / units.meter)
# Covert 0.2 mg/L to kg/m3
C = 0.2 * float((units.mg / units.l) / (units.kg / units.m**3))
# Convert 30 psi to m (assuming density = 1000 kg/m3 and gravity = 9.81 m/s2)
if not units.find_unit('waterpressure'):
units.waterpressure = 9810 * units.Pa
P = 30 * float(units.psi / units.waterpressure)
# Convert 200 gallons/day to m3/day
if not units.find_unit('gallon'):
units.gallon = 4 * units.quart
R = 200 * float(units.gallon / units.m**3)
from sympy.physics import units
# Convert 12 inches to meters
D = units.convert_to(12 * units.inch, units.meter)
# Convert 0.2 mg/L to kg/m3
C = units.convert_to(0.2 * units.mg / units.l, units.kg / units.m**3)
# Convert 30 psi to m (assuming density = 1000 kg/m3 and gravity = 9.81 m/s2)
P = 30 * units.psi
P = units.convert_to(P, units.Pa) # convert psi to pascal
waterpressure = 9810 * units.Pa / units.m
H = P / waterpressure # convert pascal to m
# Convert 200 gallons/day to m3/day
if not 'gallon' in units.find_unit('volume'):
units.gallon = 4 * units.quart
R = units.convert_to(200 * units.gallon / units.day, units.m**3 / units.day)
class _storage:
USgal = units.Quantity('US gallon', 'USgal')
# units.systems.SI.set_quantity_scale_factor(USgal, 231*units.inch**3)
# USgal.set_scale_factor(231*units.inch**3)
# USgal.set_dimension(units.length**3)
units.systems.SI.set_quantity_dimension(USgal, units.length**3)
UKgal = units.Quantity('UK gallon', 'UKgal')
# units.systems.SI.set_quantity_scale_factor(UKgal, 4.54609*units.liter)
# UKgal.set_scale_factor(4.54609*units.liter)
# UKgal.set_dimension(units.length**3)
units.systems.SI.set_quantity_dimension(UKgal, units.length**3)
lbf = units.Quantity('pound_force', 'lbf')
# lbf.set_dimension(units.force)
units.systems.SI.set_quantity_dimension(lbf, units.force)
# units.systems.SI.set_quantity_scale_factor(lbf, units.pound.scale_factor)
# lbf.set_scale_factor(units.pound.scale_factor)
MPa = megapascal = megapascals = units.Quantity('megapascal', 'MPa')
# MPa.set_dimension(units.pressure)
units.systems.SI.set_quantity_dimension(MPa, units.pressure)
# units.systems.SI.set_quantity_scale_factor(MPa, 1000*units.kPa)
# MPa.set_scale_factor(1000*units.kPa)
GPa = gigapascal = gigapascals = units.Quantity('gigapascal', 'GPa')
# GPa.set_dimension(units.pressure)
units.systems.SI.set_quantity_dimension(GPa, units.pressure)
# units.systems.SI.set_quantity_scale_factor(GPa, 1e6*units.kPa)
# GPa.set_scale_factor(1e6*units.kPa)
kN = kilonewton = kilonewtons = units.Quantity('kilonewton', 'kN')
# kN.set_dimension(units.force)
units.systems.SI.set_quantity_dimension(kN, units.force)
# units.systems.SI.set_quantity_scale_factor(kN, 1000*units.newton)
# kN.set_scale_factor(1000*units.newton)
weight = units.force
density = units.mass / units.volume
area = units.length**2
sec = units.second
min = units.minute
hr = units.hour
lbm = units.pound
distance = units.length
Hertz = units.hertz
for k, v in locals().copy().items():
if isinstance(v, (units.Quantity, units.Dimension)):
setattr(units, k, v)
del locals()[k]
lengths = distances = {
k: getattr(units, k)
for k in units.find_unit(units.inch)
}
areas = {k + '^2': v**2 for k, v in lengths.items()}
accelerations = {k: getattr(units, k) for k in units.find_unit(units.gee)}
pressures = {k: getattr(units, k) for k in units.find_unit(units.pascal)}
masses = {k: getattr(units, k) for k in units.find_unit(units.gram)}
forces = weights = {
k: getattr(units, k)
for k in units.find_unit(units.newton)
}
times = {k: getattr(units, k) for k in units.find_unit(units.minute)}
angles = {k: getattr(units, k) for k in units.find_unit(units.radian)}
# velocities = {k: getattr(units, k) for k in units.find_unit(units.speed)}
# frequencies = {k: getattr(units, k) for k in units.find_unit(units.hertz)}
# information = {k: getattr(units, k) for k in units.find_unit(units.byte)}
# powers = {k: getattr(units, k) for k in units.find_unit(units.power)}
# voltages = {k: getattr(units, k) for k in units.find_unit(units.volts)}
# currents = {k: getattr(units, k) for k in units.find_unit(units.ampere)}
# charges = {k: getattr(units, k) for k in units.find_unit(units.coulomb)}
# lights = {k: getattr(units, k) for k in units.find_unit(units.luminosity)}
# resistances = {k: getattr(units, k) for k in units.find_unit(units.ohm)}
# amounts = {k: getattr(units, k) for k in units.find_unit(units.mol)}
# temperatures = {k: getattr(units, k) for k in units.find_unit(units.kelvin)}
# magneticdensities = {k: getattr(units, k) for k in units.find_unit(units.tesla)}
# magneticfluxes = {k: getattr(units, k) for k in units.find_unit(units.weber)}
# energies = {k: getattr(units, k) for k in units.find_unit(units.electronvolt)}
# capacitances = {k: getattr(units, k) for k in units.find_unit(units.farad)}
# inductances = {k: getattr(units, k) for k in units.find_unit(units.henry)}
volumes = {k: getattr(units, k) for k in units.find_unit(units.liter)}
volumes.update({k + '^3': v**3 for k, v in lengths.items()})
unit_subs = dict()
for name, d in locals().copy().items():
if not isinstance(d, dict) or name == 'unit_subs':
continue
for k, v in d.items():
if isinstance(v, (units.Dimension, units.Quantity)):
unit_subs[k] = v
del d, k, v
dimensions = {
k: v
for k, v in vars(units).items() if isinstance(v, units.Dimension)
}
units.One = S.One
def test_find_unit():
assert find_unit("coulomb") == ["coulomb", "coulombs", "coulomb_constant"]
assert find_unit(coulomb) == [
"C",
"coulomb",
"coulombs",
"planck_charge",
"elementary_charge",
]
assert find_unit(charge) == [
"C",
"coulomb",
"coulombs",
"planck_charge",
"elementary_charge",
]
assert find_unit(inch) == [
"m",
"au",
"cm",
"dm",
"ft",
"km",
"ly",
"mi",
"mm",
"nm",
"pm",
"um",
"yd",
"nmi",
"feet",
"foot",
"inch",
"mile",
"yard",
"meter",
"miles",
"yards",
"inches",
"meters",
"micron",
"microns",
"decimeter",
"kilometer",
"lightyear",
"nanometer",
"picometer",
"centimeter",
"decimeters",
"kilometers",
"lightyears",
"micrometer",
"millimeter",
"nanometers",
"picometers",
"centimeters",
"micrometers",
"millimeters",
"nautical_mile",
"planck_length",
"nautical_miles",
"astronomical_unit",
"astronomical_units",
]
assert find_unit(inch**-1) == ["D", "dioptre", "optical_power"]
assert find_unit(length**-1) == ["D", "dioptre", "optical_power"]
assert find_unit(inch**3) == [
"l",
"cl",
"dl",
"ml",
"liter",
"quart",
"liters",
"quarts",
"deciliter",
"centiliter",
"deciliters",
"milliliter",
"centiliters",
"milliliters",
"planck_volume",
]
assert find_unit("voltage") == [
"V", "v", "volt", "volts", "planck_voltage"
]