How to pass an environment variable as a command line parameter in Run/Debug configuration in PyCharm?

Question

I am trying to learn PyCharm, need to pass an environment variable as a command line parameter to my process, e.g. execute an equivalent of myScript.py -u $myVar

Answer 1

in PyCharm Run/Debug configuration for "Script Parameters:" Enter

-u ${myVar}

Note: This will work only for existing env. variables but not for env. variables that you set up in the PyCharm Run/Debug configuration. For that to work, you will need to look into "Before Launch" configuration