Reloading module giving NameError name reload is not defined

Question

I m trying to reload a module I have already imported in Python 3  I know that you only need to import once and executing the import command again won t do anything    Executing reload foo  is giving this error   Traceback  most recent call last       File   stdin    line 1  in  module          NameError  name  reload  is not defined   What does the error mean

User · Answer

For    Python3 4   import importlib importlib reload module    For  lt   Python3 3   import imp imp reload module    For Python2 x   Use the in-built reload   function   reload module

User · Answer

import imp imp reload script4

User · Answer

If you don t want to use external libs  then one solution is to recreate the reload method from python 2 for python 3 as below  Use this in the top of the module  assumes python 3 4     import sys if sys version info major gt  3       def reload MODULE                   import importlib         importlib reload MODULE    BTW reload is very much required if you use python files as config files and want to avoid restarts of the application

User · Answer

I recommend using the following snippet as it works in all python versions  requires six    from six moves import reload module reload module module

User · Answer

To expand on the previously written answers  if you want a single solution which will work across Python versions 2 and 3  you can use the following   try      reload    Python 2 7 except NameError      try          from importlib import reload    Python 3 4      except ImportError          from imp import reload    Python 3 0 - 3 3

User · Answer

For python2 and python3 compatibility  you can use     Python 2 and 3 from imp import reload reload mymodule

User · Answer

reload is a builtin in Python 2  but not in Python 3  so the error you re seeing is expected   If you truly must reload a module in Python 3  you should use either    importlib reload for Python 3 4 and above imp reload for Python 3 0 to 3 3  deprecated since Python 3 4 in favour of importlib

[python] Reloading module giving NameError: name 'reload' is not defined

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