Autoreload of modules in IPython

Question

Is there a way to have IPython automatically reload all changed code  Either before each line is executed in the shell or failing that when it is specifically requested to  I m doing a lot of exploratory programming using IPython and SciPy and it s quite a pain to have to manually reload each module whenever I change it

User · Answer

REVISED - please see Andrew 1510 s answer below  as IPython has been updated        It was a bit hard figure out how to get there from a dusty bug report  but   It ships with IPython now   import ipy autoreload  autoreload 2  aimport your mod     autoreload  for help       then every time you call your mod dwim    it ll pick up the latest version

User · Answer

There is an extension for that  but I have no usage experience yet   http   ipython scipy org ipython ipython attachment ticket 154 ipy autoreload py

User · Answer

If you add file ipython config py into the    ipython profile default directory with lines like below  then the autoreload functionality will be loaded on IPython startup  tested on 2 0 0   print  quot --------- gt  gt  gt  gt  gt  gt  gt  gt  ENABLE AUTORELOAD  lt  lt  lt  lt  lt  lt  lt  lt  lt ------------ quot   c   get config   c InteractiveShellApp exec lines      c InteractiveShellApp exec lines append   load ext autoreload   c InteractiveShellApp exec lines append   autoreload 2

User · Answer

For IPython version 3 1  4 x  and 5 x   load ext autoreload  autoreload 2   Then your module will be auto-reloaded by default  This is the doc   File           my python path lib python2 7 site-packages IPython extensions autoreload py  Docstring    autoreload   is an IPython extension that reloads modules automatically before executing the line of code typed   This makes for example the following workflow possible      sourcecode   ipython     In  1    load ext autoreload     In  2    autoreload 2     In  3   from foo import some function     In  4   some function      Out 4   42     In  5     open foo py in an editor and change some function to return 43     In  6   some function      Out 6   43  The module was reloaded without reloading it explicitly  and the object imported with   from foo import       was also updated    There is a trick  when you forget all of the above when using ipython  just  try   import autoreload  autoreload   Then you get all the above

User · Answer

You can use     import ipy autoreload    autoreload 2     aimport your mod

User · Answer

As mentioned above  you need the autoreload extension  If you want it to automatically start every time you launch ipython  you need to add it to the ipython config py startup file   It may be necessary to generate one first   ipython profile create   Then include these lines in    ipython profile default ipython config py   c InteractiveShellApp exec lines      c InteractiveShellApp exec lines append   load ext autoreload   c InteractiveShellApp exec lines append   autoreload 2     As well as an optional warning in case you need to take advantage of compiled Python code in  pyc files   c InteractiveShellApp exec lines append  print  Warning  disable autoreload in ipython config py to improve performance        edit  the above works with version 0 12 1 and 0 13

[python] Autoreload of modules in IPython

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