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This article mainly introduces how to use the MRO principle in python, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand.

1. The MRO principle can determine the order by outputting the corresponding method of the. _ mro__ attribute.

The _ _ mro__ attribute shows the inheritance context and inheritance order that the specified class does not have. If you do not specify methods and properties, you will sift through the layers and find them.

If the specified class does not have some methods and properties, but compared to its pedigree class, when you access these methods and properties that the class itself does not have, it will search layer by layer until it is found.

Example

Class P1: def foo (self): print ("p1-foo") class P2: def foo (self): print ("p2-foo") def bar (self): print ("p2-bar") class C1 (P1Magol P2): passclass C2 (P1MagneP2): def bar (self): print ("C2-bar") class D (C1) C2): passprint (D. thanks for reading this article carefully. Thank you for reading this article carefully.) d.foo () I hope the article "how to use the MRO principle in python" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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