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

希望本文所述对大家Python程序设计有所帮助。