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This article mainly introduces the relevant knowledge of "how to use the magic method of python dict". The editor shows you the operation process through the actual case. The operation method is simple, fast and practical. I hope this article "how to use the magic method of python dict" can help you solve the problem.

Method description

1. The _ _ or__ and _ _ ror__ magic methods correspond to the | operator, where _ _ or__ indicates that the object is on the left side of the operator, and _ _ ror__ indicates that the object is on the right side of the operator. The implementation generates a new dictionary based on the number of operations on the left, then updates the number of operations on the right to the new dictionary, and then returns the new dictionary.

2. The _ _ ior__ magic method corresponds to the | = operator, and the number of operations on the right can be updated by yourself.

Example

Def _ or__ (self, other): if not isinstance (other, dict): return NotImplemented new = dict (self) new.update (other) return new def _ ror__ (self, other): if not isinstance (other, dict): return NotImplemented new = dict (other) new.update (self) return new def _ ior__ (self, other): dict.update (self) Other) return self's content on "how to use Magic methods for python dict implementation" ends here. Thank you for your reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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