preload some libraries and scripts in python

Question

How to preload some libraries and scripts in python before I call python command? Is there something like .bashrc file to deal with predefining some functions/variables befo

Answer 1

Create a file, 'my_imports.py' and add the import lines for all your modules.

import math
import anothermodule
import anotherothermodule

Then set an environment variable 'PYTHONSTARTUP' and set it to '/path/to/my_imports.py'.

Now when you run python at the command prompt, it will load your modules first.

Answer 2

i wanted to sometimes run python with a bunch of statistics/math stuff loaded (numpy, matplotlib, etc), but othertimes just a simple python without having the overhead of loading modules i wasn't going to use.

i use ubuntu linux, so i created a python script python-preload.py with the following:

import numpy as np
import matplotlib.pyplot as plt
import matplotlib as mpl

and added an alias to my ~/.bashrc:

alias pym='PYTHONSTARTUP=/home/$USER/path/to/script/python-preload.py python'

so when i want normal python i run python, and when i want all the math stuff i run pym.

hope this helps. based off Tony Blundell's answer.

Answer 3

How about this:

python -i -c "import math"

And you can put this into a bash file, like b.sh

#! /bin/bash

python -i -c "import math"

Then you can set whatever you want.