本文实例讲述了Python实现计算对象的内存大小。分享给大家供大家参考，具体如下：
一般的sys.getsizeof()显示不了复杂的字典。
查看类中的内容：
def dump(obj):
for attr in dir(obj):#dir显示类的所有方法
print(" obj.%s = %r" % (attr, getattr(obj, attr)))
这里用递归调用所有对象的getsizeof：
def get_size(obj, seen=None):
# From https://goshippo.com/blog/measure-real-size-any-python-object/
# Recursively finds size of objects
size = sys.getsizeof(obj)
if seen is None:
seen = set()
obj_id = id(obj)
if obj_id in seen:
return 0
# Important mark as seen *before* entering recursion to gracefully handle
# self-referential objects
seen.add(obj_id)
if isinstance(obj, dict):
size += sum([get_size(v, seen) for v in obj.values()])
size += sum([get_size(k, seen) for k in obj.keys()])
elif hasattr(obj, '__dict__'):
size += get_size(obj.__dict__, seen)
elif hasattr(obj, '__iter__') and not isinstance(obj, (str, bytes, bytearray)):
size += sum([get_size(i, seen) for i in obj])
return size
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希望本文所述对大家Python程序设计有所帮助。
