How do I import variable packages in Python like using variable variables ($$) in PHP?

Question

I want to import some package depending on which value the user chooses.

The default is file1.py:

Answer 1

It's probably a very bad idea to let the user choose what to import. Packages can execute code on import, so you're effectively allowing a user to arbitrarily execute code on your system! Much safer to do something like

if user_input == 'file1.py':
  from files import file1 as file
elif user_input == 'file2.py':
  from files import file2 as file
else:
  file = None
  print "Sorry, you can't import that file"