def test_flatsize(failf=None, stdf=None):
'''Compare the results of **flatsize()** without using ``sys.getsizeof()``
with the accurate sizes returned by ``sys.getsizeof()``.
Return the total number of tests and number of unexpected failures.
Expect differences for sequences as dicts, lists, sets, tuples, etc.
While this is no proof for the accuracy of **flatsize()** on Python
builds without ``sys.getsizeof()``, it does provide some evidence that
function **flatsize()** produces reasonable and usable results.
'''
t, g, e = [], asizeof._getsizeof, 0
if g:
for v in asizeof._values(asizeof._typedefs):
t.append(v.type)
try: # creating one instance
if v.type.__module__ not in ('io',): # avoid 3.0 RuntimeWarning
t.append(v.type())
except Exception: # ignore errors
pass
t.extend(({1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8},
[1, 2, 3, 4, 5, 6, 7, 8], ['1', '2', '3'], [0] * 100,
'12345678', 'x' * 1001,
(1, 2, 3, 4, 5, 6, 7, 8), ('1', '2', '3'), (0,) * 100,
asizeof._Slots((1, 2, 3, 4, 5, 6, 7, 8)),
asizeof._Slots(('1', '2', '3')),
asizeof._Slots((0,) * 100),
0, 1 << 8, 1 << 16, 1 << 32, 1 << 64, 1 << 128,
complex(0, 1), True, False))
asizeof._getsizeof = None # zap _getsizeof for flatsize()
for o in t:
a = asizeof.flatsize(o)
s = sys.getsizeof(o, 0) # 0 as default
if a != s:
if isinstance(o, (dict, list, set, frozenset, tuple, bytes)):
# flatsize() approximates length of sequences
x = ', expected failure'
elif (isinstance(o, (type, bool, asizeof.ABCMeta)) and
sys.version_info >= (3, 0)):
x = ', expected failure'
elif isinstance(o, str) and sys.version_info >= (3, 3):
x = ', expected failure'
elif isinstance(o, deque) and sys.version_info >= (3, 4):
x = ', expected failure'
else:
x = ', %r' % asizeof._typedefof(o)
e += 1
if failf: # report failure
failf('%s vs %s for %s: %s',
a, s, asizeof._nameof(type(o)), _repr(o))
if stdf:
asizeof._printf('flatsize() %s vs sys.getsizeof() %s for %s: %s%s',
a, s, asizeof._nameof(type(o)), _repr(o), x, file=stdf)
asizeof._getsizeof = g # restore
return len(t), e
def get_named_refs(obj):
"""
Return all named referents of `obj`. Reuse functionality from asizeof.
Does not return referents without a name, e.g. objects in a list.
TODO: Move this to a different module, probably asizeof.
"""
refs = []
v = _typedefof(obj)
if v:
v = v.refs
if v and _callable(v):
for ref in v(obj, True):
try:
refs.append((ref.name, ref.ref))
except AttributeError:
pass
return refs
def test_flatsize(failf=None, stdf=None):
'''Compare the results of **flatsize()** without using ``sys.getsizeof()``
with the accurate sizes returned by ``sys.getsizeof()``.
Return the total number of tests and number of unexpected failures.
Expect differences for sequences as dicts, lists, sets, tuples, etc.
While this is no proof for the accuracy of **flatsize()** on Python
builds without ``sys.getsizeof()``, it does provide some evidence that
function **flatsize()** produces reasonable and usable results.
'''
t, g, e = [], asizeof._getsizeof, 0
if g:
for v in asizeof._typedefs.copy().values():
t.append(v.type)
try: # creating one instance
if v.type.__module__ not in (
'io', ): # avoid 3.0 RuntimeWarning
t.append(v.type())
except Exception: # ignore errors
pass
t.extend(
({
1: 1,
2: 2,
3: 3,
4: 4,
5: 5,
6: 6,
7: 7,
8: 8
}, [1, 2, 3, 4, 5, 6, 7,
8], ['1', '2', '3'], [0] * 100, '12345678', 'x' * 1001,
(1, 2, 3, 4, 5, 6, 7, 8), ('1', '2', '3'), (0, ) * 100,
asizeof._Slots((1, 2, 3, 4, 5, 6, 7, 8)),
asizeof._Slots(('1', '2', '3')), asizeof._Slots(
(0, ) * 100), 0, 1 << 8, 1 << 16, 1 << 32, 1 << 64, 1 << 128,
complex(0, 1), True, False))
asizeof._getsizeof = None # zap _getsizeof for flatsize()
for o in t:
a = asizeof.flatsize(o)
s = sys.getsizeof(o, 0) # 0 as default
if a != s:
if isinstance(o, (dict, list, set, frozenset, tuple, bytes)):
# flatsize() approximates length of sequences
x = ', expected failure'
elif (isinstance(o, (type, bool, asizeof.ABCMeta))
and sys.version_info >= (3, 0)):
x = ', expected failure'
elif isinstance(o, str) and sys.version_info >= (3, 3):
x = ', expected failure'
elif isinstance(o, deque) and sys.version_info >= (3, 4):
x = ', expected failure'
else:
x = ', %r' % asizeof._typedefof(o)
e += 1
if failf: # report failure
failf('%s vs %s for %s: %s', a, s,
asizeof._nameof(type(o)), _repr(o))
if stdf:
asizeof._printf(
'flatsize() %s vs sys.getsizeof() %s for %s: %s%s',
a,
s,
asizeof._nameof(type(o)),
_repr(o),
x,
file=stdf)
asizeof._getsizeof = g # restore
return len(t), e
