Predictive Hacks

Working with Environment Variables in Python

A common way to configure scripts is to use environment variables, like the credentials and so on. The os package enables us to interact with the environment variables.

How you can get all the environment variables

import os

How we can create a new environment variable

os.environ['MyBlogPassword'] = 'MyPassword'

How to get an environment variable

os.environ.get('MyBlogPassword', 'give_your_default_value')

How to remove an environment variable

# using pop

# using del
del os.environ["MyBlogPassword"]

Working with Environment Variables in a Conda Environment

If you are working in a conda virtual environment, you can create environment variables as follows:

conda env config vars set my_var=value

Once you have set the environment variables, you will need to reactivate the environment by running:

conda activate env_name

Finally, if you want to check if the environment variable has been set, you can run:

echo my_var


conda env config vars list

The latter returns a list of any variable you may have set.

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