Can't get dill.source.getsource to work in PyCharm

[amine-aboufirass]

I am working with the following:

• python version 3.6.7
• dill version :

# Name                    Version                   Build  Channel
dill                      0.3.1.1          py36h9f0ad1d_1    conda-forge

In a regular python interpreter in PyCharm I am running the following commands:

>>> def f(x): return x+1
>>> import dill
>>> dill.source.getsource(f)

The last line throws the following error:

Traceback (most recent call last):
File "", line 1, in
File "C:\Users\aboufira\AppData\Local\Continuum\miniconda3\envs\fipy-dev\lib\site-packages\dill\source.py", line 354, in getsource
lines, lnum = getsourcelines(object, enclosing=enclosing)
File "C:\Users\aboufira\AppData\Local\Continuum\miniconda3\envs\fipy-dev\lib\site-packages\dill\source.py", line 325, in getsourcelines
code, n = getblocks(object, lstrip=lstrip, enclosing=enclosing, locate=True)
File "C:\Users\aboufira\AppData\Local\Continuum\miniconda3\envs\fipy-dev\lib\site-packages\dill\source.py", line 251, in getblocks
lines, lnum = findsource(object)
File "C:\Users\aboufira\AppData\Local\Continuum\miniconda3\envs\fipy-dev\lib\site-packages\dill\source.py", line 154, in findsource
raise IOError('could not extract source code')
OSError: could not extract source code

When running from a script however, this seems to work fine.

[mmckerns]

I think this is a compatibility issue with pycharm, not dill itself. I tested your version of dill and python on Windows, and it works fine. It's known that dill.source and IPython have some compatibility issues, so I'm assuming that interaction with pycharm is the issue. Can you try an interpreter without using pycharm (e.g. in the command shell)?

[amine-aboufirass]

I tried and it works outside of pycharm. I will log an issue with Pycharm. Thanks.

[mmckerns]

Can you link the issue with this one? On cross-comparability issues, any mods may need to be made here or there, or both.

[amine-aboufirass]

@mmckerns here it is

https://youtrack.jetbrains.com/issue/PY-41239

I still didn't get a response on it though...

[mmckerns]

Cross-module compatibility issues can take a while. Hopefully you get some movement on it here or there.

[mmckerns]

@amine-aboufirass: as PyCharm uses IPython, and we just applied a PR (#531) for getsource in IPython, I think I can assume it fixes this issue as well. Please reopen if you find that it did not.