Environment variables are accessed through os.environ

import os

Or you can see a list of all the environment variables using:


As sometimes you might need to see a complete list!

# using get will return `None` if a key is not present rather than raise a `KeyError`

# os.getenv is equivalent, and can also give a default value instead of `None`
print(os.getenv('KEY_THAT_MIGHT_EXIST', default_value))

Python default installation on Windows is C:\Python. If you want to find out while running python you can do:

import sys