How to implement python assignment and Exchange

In this article, the editor introduces in detail "how to achieve python assignment and exchange". The content is detailed, the steps are clear, and the details are handled properly. I hope this article "how to achieve python assignment and exchange" can help you solve your doubts.

Assignment principle

1. Form a new tuple on the right side of the assignment, and immediately unpack the tuple to the variable sum on the left.

2. When the assignment is complete, the new tuple will no longer be referenced and will be marked as garbage collected, eventually completing the variable exchange.

Example

X, y = 10, 20print (x, y) x, y = y, xprint (x, y) # 1 (10,20) # 2 (20,10)

Python provides a way to intuitively assign and exchange (variable values) in a single line of code.

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