Import modules when starting python in Windows [duplicate]

Question

I'm using python on Windows. And I'm trying to find a way to import some default module when starting python. It means, when starting python, some modules should be already imported, just like builtins. Is there any way?

Thanks.

Answer 1

If you mean while going into the interactive mode, just make a small startup script. Instead of just launching python with:

python

try instead:

python -i startupImports.py

startupImports.py:

import time
from collections import defaultdict
from customclass import myclass
#...etc

Answer 2

Define a PYTHONSTARTUP environment variable and point it to a python file and it will be loaded when you start python interactively without a command line script.
I have my PYTHONSTARTUP point to a .pythonrc where I try to import a __boot__.py (bootstrap) in the current directory for any interactive python session.

try:
    from __boot__ import *
except Exception:
    pass

There's a bunch of other things in my pythonrc like __future__ imports, readline setup, etc.