Installing python module within code

Question

I need to install a package from PyPi straight within my script  Maybe there s some module or distutils  distribute  pip etc   feature which allows me to just execute something like pypi install  requests   and requests will be installed into my virtualenv

User · Answer

You can also use something like   import pip  def install package       if hasattr pip   main            pip main   install   package       else          pip  internal main   install   package      Example if   name         main         install  argh

User · Answer

This should work   import subprocess  def install name       subprocess call   pip    install   name

User · Answer

for installing multiple packages  i am using a setup py file with following code  import sys import subprocess import pkg resources  required     numpy   pandas    lt etc gt     installed    pkg key for pkg in pkg resources working set  missing   required - installed   if missing        implement pip as a subprocess      subprocess check call  sys executable   -m    pip    install   missing

User · Answer

You define the dependent module inside the setup py of your own package with the  install requires  option    If your package needs to have some console script generated then you can use the  console scripts  entry point in order to generate a wrapper script that will be placed within the  bin  folder  e g  of your virtualenv environment

User · Answer

If you want to use pip to install required package and import it after installation  you can use this code   def install and import package       import importlib     try          importlib import module package      except ImportError          import pip         pip main   install   package       finally          globals   package    importlib import module package    install and import  transliterate     If you installed a package as a user you can encounter the problem that you cannot just import the package  See How to refresh sys path  for additional information

User · Answer

The officially recommended way to install packages from a script is by calling pip s command-line interface via a subprocess  Most other answers presented here are not supported by pip  Furthermore since pip v10  all code has been moved to pip  internal precisely in order to make it clear to users that programmatic use of pip is not allowed   Use sys executable to ensure that you will call the same pip associated with the current runtime   import subprocess import sys  def install package       subprocess check call  sys executable   -m    pip    install   package

User · Answer

import os os system  pip install requests    I tried above for temporary solution instead of changing docker file  Hope these might be useful to some

User · Answer

i added some exception handling to  Aaron s answer   import subprocess import sys  try      import pandas as pd except ImportError      subprocess check call  sys executable   -m    pip    install    pandas    finally      import pandas as pd

[python] Installing python module within code

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