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This article is about the shortcomings of Python inheritance. Xiaobian thinks it is quite practical, so share it with everyone for reference. Let's follow Xiaobian and have a look.

There may be other special places for special classes, defining a class under which classes can also be redefined, which will lead to the line of inheritance getting longer and longer.

If inheritance is used, any small change requires redefining a class, which can easily lead to an explosion of categories.

Produce a large number of subclasses with subtle differences. Therefore, there is a principle of using combinations more than inheritance.

examples

class SubDict(dict): def __setitem__(self, k, v): v = "sub_item_"+str(v) super().__ setitem__(k, v) sd = SubDict(one="one")print(sd)sd <$'two ']='two'print(sd)sd.update(three="three")print(sd)#'one': 'one'}#' one ': 'one', 'two': 'sub_item_two'}#'one': 'one', ' two':'sub_item_two', 'three': 'three'} Thank you for reading each digit! About "python inheritance shortcomings what" this article is shared here, I hope the above content can have some help to everyone, so that everyone can learn more knowledge, if you think the article is good, you can share it to let more people see it!

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