how to "reimport" module to python then code be changed after import

python runtime ipython overloading python-import

For Python 2.x

reload(foo)

For Python 3.x

import importlibimport foo #import the module here, so that it can be reloaded.importlib.reload(foo)

python runtime ipython overloading python-import

In addition to gnibbler's answer:

This changed in Python 3 to:

>>> import imp>>> imp.reload(foo)

As @onnodb points out, imp is deprecated in favor of importlib since Python 3.4:

>>> import importlib>>> importlib.reload(foo)

python runtime ipython overloading python-import

IPython3's autoreload feature works just right.

I am using the actual example from the webpage. First load the 'autoreload' feature.

In []: %load_ext autoreloadIn []: %autoreload 2

Then import the module you want to test:

In []: import fooIn []: foo.some_function()Out[]: 42

Open foo.py in an editor and change some_function to return 43

In []: foo.some_function()Out[]: 43

It also works if you import the function directly.

In []: from foo import some_functionIn []: some_function()Out[]: 42

Make change in some_function to return 43.

In []: some_function()Out[]: 43

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