How to install and import Python modules at runtime?

Question

I want to write a script to automatically setup a brand new ubuntu installation and install a django-based app. Since the script will be run on a new server, the Python scri

Answer 1

For those who are using pip version greater than 10.x, there is no main function for pip so the alternative approach is using import pip._internal as pip instead of import pip like :

Updated answer of Paulo

import pip._internal as pip

def install(package):
    pip.main(['install', package])

if __name__ == '__main__':
    try:
        import pexpect
    except ImportError:
        install('pexpect')
        import pexpect