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ylikx / forpy

Forpy - use Python from Fortran
GNU Lesser General Public License v3.0
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Problem with matplotlib #15

Closed implicitall closed 4 years ago

implicitall commented 4 years ago

Hello, I get the following error with the matplotlib example:

Traceback (most recent call last): File "/home/abest/.local/lib/python3.7/site-packages/matplotlib/pyplot.py", line 2811, in plot return gca().plot( File "/home/abest/.local/lib/python3.7/site-packages/matplotlib/pyplot.py", line 935, in gca return gcf().gca(kwargs) File "/home/abest/.local/lib/python3.7/site-packages/matplotlib/pyplot.py", line 578, in gcf return figure() File "/home/abest/.local/lib/python3.7/site-packages/matplotlib/pyplot.py", line 525, in figure kwargs) File "/home/abest/.local/lib/python3.7/site-packages/matplotlib/backend_bases.py", line 3218, in new_figure_manager return cls.new_figure_manager_given_figure(num, fig) File "/home/abest/.local/lib/python3.7/site-packages/matplotlib/backends/_backend_tk.py", line 1008, in new_figure_manager_given_figure window = Tk.Tk(className="matplotlib") File "/usr/lib64/python3.7/tkinter/init.py", line 2018, in init baseName = os.path.basename(sys.argv[0]) IndexError: list index out of range

After searching a little online, I have found that a workaround is this: ierror = run_string("import sys;sys.argv.append('')");

Perhaps you could add that code to forpy_initialize.

ylikx commented 4 years ago

Hi, that's interesting, do you have a link to this workaround? From the error message, it looks like your sys.argv before the workaround is empty? I need to look into it a bit more, since I don't necessarily want to modify sys.argv for everyone.

implicitall commented 4 years ago

Here is the link: https://github.com/ninia/jep/issues/187

ylikx commented 4 years ago

Thanks, according to the link sys.argv is not set for embedded Python. I'm still undecided, if argv should be set by the user or in forpy_initialize. I will think about it.

ylikx commented 4 years ago

Setting sys.argv = [''] in forpy_initialize to fix this. Apparently this is also what Python 3.8 does. See https://bugs.python.org/issue32573 Thank you very much for bringing this to my attention!