os.environ code example
Example 1: get environment variables python
import os
# Set environment variables
os.environ['API_USER'] = 'username'
os.environ['API_PASSWORD'] = 'secret'
# Get environment variables
USER = os.getenv('API_USER')
PASSWORD = os.environ.get('API_PASSWORD')
# Getting non-existent keys
FOO = os.getenv('FOO') # None
BAR = os.environ.get('BAR') # None
BAZ = os.environ['BAZ'] # KeyError: key does not exist.
Example 2: python env
python3 -m venv tutorial-env
tutorial-env\Scripts\activate.bat (window)
source tutorial-env/bin/activate (linux)
Example 3: python os module
#the os module provides an operating system interface from Python
import os
#prints the name of the operating system
print(os.name)
#prints the absolute path for the module
print(os.getcwd())