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Automagically import missing modules in IPython.

Project Description

Automagically import missing modules in IPython: instead of

In [1]: plt.plot([1, 2], [3, 4])
NameError                                 Traceback (most recent call last)
<ipython-input-1-994ba2bf13c0> in <module>()
----> 1 plt.plot([1, 2], [3, 4])

NameError: name 'plt' is not defined

In [2]: from matplotlib import pyplot as plt

In [3]: plt.plot([1, 2], [3, 4])
Out[3]: [<matplotlib.lines.Line2D at 0x7f73f0179198>]

do what I mean:

In [1]: plt.plot([1, 2], [3, 4])
Autoimport: from matplotlib import pyplot as plt
Out[1]: [<matplotlib.lines.Line2D at 0x7f7e253552b0>]

Inspired from @OrangeFlash81’s version, with many improvements:

  • Does not rely on re-execution, but instead hooks the user namespace; thus, safe even in the presence of side effects, and works for tab completion and magics too.
  • Learns your preferred aliases (from the history).
  • Suppresses irrelevant chained tracebacks.
  • Auto-imports submodules.
  • pip-installable.


Pick one among:

$ pip install ipython-autoimport  # from PyPI
$ pip install git+  # from Github

then append the output of python -mipython_autoimport to the output of ipython profile locate (typically ~/.ipython/profile_default/

Run tests with pytest (tests requires pathlib on Python 3.3).


Constructs such as

class C:

will not work, because they are run using the class locals (rather than the patched locals); patching globals would not work because LOAD_NAME queries globals using PyDict_GetItem exactly (note that it queries locals using PyObject_GetItem; also, LOAD_GLOBALS queries both globals and builtins using PyObject_GetItem so we could possibly get away with patching the builtins dict instead, but that seems a bit too invasive…).

Release History

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