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recursively gets size of object, guaranteeing not counting same obj twice. literally copied from http://stackoverflow.com/a/30316760 but might contain further improvements.
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import sys | |
from numbers import Number | |
from collections import Set, Mapping, deque | |
try: # Python 2 | |
zero_depth_bases = (basestring, Number, xrange, bytearray) | |
iteritems = 'iteritems' | |
except NameError: # Python 3 | |
zero_depth_bases = (str, bytes, Number, range, bytearray) | |
iteritems = 'items' | |
def getsize(obj_0): | |
"""Recursively iterate to sum size of object & members.""" | |
def inner(obj, _seen_ids = set()): | |
obj_id = id(obj) | |
if obj_id in _seen_ids: | |
return 0 | |
_seen_ids.add(obj_id) | |
size = sys.getsizeof(obj) | |
if isinstance(obj, zero_depth_bases): | |
pass # bypass remaining control flow and return | |
elif isinstance(obj, (tuple, list, Set, deque)): | |
size += sum(inner(i) for i in obj) | |
elif isinstance(obj, Mapping) or hasattr(obj, iteritems): | |
size += sum(inner(k) + inner(v) for k, v in getattr(obj, iteritems)()) | |
# Check for custom object instances - may subclass above too | |
if hasattr(obj, '__dict__'): | |
size += inner(vars(obj)) | |
if hasattr(obj, '__slots__'): # can have __slots__ with __dict__ | |
size += sum(inner(getattr(obj, s)) for s in obj.__slots__ if hasattr(obj, s)) | |
return size | |
return inner(obj_0) |
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