How to get environment variables in python

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Specific operation methods:

1. Find the python program in the start menu of win system.

2. Find and open the idle tool program in the python program directory.

3. Click "File" in the upper left corner of the idle tool and select "New File" to create a new shell script.

4. Enter the following instructions in the shell script to import the os module.

Import os # Import os module

5. Finally, you can obtain the environment variables through the following instructions.

Os.getenv () # get environment variables

Related operation instructions:

Os.putenv () # set the environment variable

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