Basic matplotlib usage such as import matplotlib.pyplot as plt; plt.plot(list(range(10)), list(range(10))) crashes with module '_tkinter' has no attribute '__file__'.
On system python, _tkinter is a shared library (/usr/lib/python3.8/lib-dynload/_tkinter.cpython-38-x86_64-linux-gnu.so), while in these python builds it's a builtin module which does not have __file__. matplotlib expects tkinter to be an .so it can load:
https://github.com/matplotlib/matplotlib/blob/f25c2d025fa8f70d6688e7acf4b85e4eb7590299/src/_tkagg.cpp#L310-L322
To reproduce:
wget https://github.com/indygreg/python-build-standalone/releases/download/20220502/cpython-3.10.4+20220502-x86_64_v3-unknown-linux-gnu-pgo+lto-full.tar.zst tar xf cpython-3.10.4+20220502-x86_64_v3-unknown-linux-gnu-pgo+lto-full.tar.zst python/install/bin/python3 -m venv venv venv/bin/pip install matplotlib venv/bin/python -c "import matplotlib.pyplot as plt; plt.plot(list(range(10)), list(range(10)))"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 2769, in plot
return gca().plot(
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 2274, in gca
return gcf().gca(**kwargs)
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 867, in gcf
return figure()
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 808, in figure
manager = new_figure_manager(
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 326, in new_figure_manager
_warn_if_gui_out_of_main_thread()
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 316, in _warn_if_gui_out_of_main_thread
if (_get_required_interactive_framework(_get_backend_mod())
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 217, in _get_backend_mod
switch_backend(dict.__getitem__(rcParams, "backend"))
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 268, in switch_backend
switch_backend(candidate)
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 288, in switch_backend
class backend_mod(matplotlib.backend_bases._Backend):
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/pyplot.py", line 289, in backend_mod
locals().update(vars(importlib.import_module(backend_name)))
File "/home/konsti/monotrail/pbsi/python/install/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 883, in exec_module
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/backends/backend_tkagg.py", line 1, in <module>
from . import _backend_tk
File "/home/konsti/monotrail/pbsi/venv/lib/python3.10/site-packages/matplotlib/backends/_backend_tk.py", line 24, in <module>
from . import _tkagg
AttributeError: module '_tkinter' has no attribute '__file__'. Did you mean: '__name__'?
Running TCL_LIBRARY="$(pwd)/python/install/lib/tcl8.6" venv/bin/python -c "import matplotlib.pyplot as plt; plt.plot(list(range(10)), list(range(10)))" instead as suggested by the docs makes no difference.
EDIT: I'm mainly using the standalone builds by libloading libpython.so and launching one of the very high level c api commands, so i'd be happy about any workaround that works with libloading or importlib hackery from rust.
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