Handle environment variables in Python

How to handle environment variables in Python code.

import os

Get

Collective acquisition

os.environ

Get by specifying the environment variable name ʻos.environ [environment variable name] `

#Example
os.environ['PATH']

Setting

If set this way, it is only valid within that Python program. System environment variables do not rewrite

# os.environ[Environment variable name] =path
os.environ['NEW_KEY'] = 'test'

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