How to check if a python module has been imported?

Question

How do I check if I imported a module somewhere in the code?

 if not has_imported(\"somemodule\"):
     print(\'you have not imported somemodule\')
         


        

Answer 1

To the sys.modules answers accepted, I'd add one caveat to be careful about renaming modules on import:

>>> import sys
>>> import datetime as dt
>>> 'dt' in sys.modules
False
>>> 'datetime' in sys.modules
True