how to execute a function each time you run python shell

Question

I want to know how (if there is a way) to write a function and have it automatically defined when you start a python shell, or to keep certain defined functions after the shell closes so you don't have to keep re defining it if you use it a lot.

gogaz · Accepted Answer · 2020-06-28 13:01:35Z

6

Yes, you can, you need to set your environment variable PYTHONSTARTUP to a python script you would like to be executed at every python startup.

By convention, such files are named by adding the rc suffix to the program name you're trying to tweak, and are usually located at the root of your home directory. In that case I would create the python file under $HOME/.pythonrc and then run export PYTHONSTARTUP=~/.pythonrc (for UNIX-like systems, it could be slightly different on Windows if you don't have a MinGW or equivalent).

Here's an example of .pythonrc file that you can play with: https://gist.github.com/twneale/5245670

edited Jun 28, 2020 at 13:01

answered Aug 19, 2018 at 20:35

gogaz

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