How to set up environment variables in Python

Setting environment variables in Python can be done using the os.environ dictionary. This dictionary maps key-value pairs representing the current environment variables.

To create an environmental variable, you can use the format os.environ[key] = value, where key is the variable name and value is the variable value. For example, to set an environmental variable named MY_VAR to my_value, you can use the following code:

import os

os.environ['MY_VAR'] = 'my_value'

You can also use os.putenv(key, value) to set environment variables, which is similar to the method mentioned above.

Please note that environment variables set through code are only valid during the execution of the current script. If you want to set environment variables in a terminal session, you need to write the code into a script and execute it in the terminal.