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。