How do I automatically install missing python modules? [duplicate]

Risking negative votes, I would like to suggest a quick hack. Please note that I’m completely on board with accepted answer that dependencies should be managed externally.

But for situations where you absolutely need to hack something that acts like self contained, you can try something like below:

import os

try:
  import requests
except ImportError:
  print "Trying to Install required module: requests\n"
  os.system('python -m pip install requests')
# -- above lines try to install requests module if not present
# -- if all went well, import required module again ( for global access)
import requests