How to use with as in Python

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Description

1. Using with as statements to operate the context manager can help us allocate and release resources automatically.

2. The part included in [] can be used or omitted. The target parameter is used to specify the variable in which the sentence stores the result specified by the expression.

If the code block in the withas statement does not want to execute any statements, you can directly use the pass statement instead.

Grammar

With expression [as target]: code block

Example

With open ('my_file.txt', encoding='utf-8') as f: print (f.read ()) these are all the contents of the article "how to use with as in Python". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!