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Cannot import pyplot. NameError: 'FigureManagerWebAgg' is not defined #9380
Description
Bug report
When using the webagg backend on 2.1.0, importing pyplot fails with a NameError.
Code for reproduction
import matplotlib
matplotlib.use('WebAgg')
from matplotlib import pyplotActual outcome
I get a name error. traceback excerpt:
.../python3.6/site-packages/matplotlib/backends/__init__.py in pylab_setup(name)
58 # imports. 0 means only perform absolute imports.
59 backend_mod = __import__(backend_name, globals(), locals(),
---> 60 [backend_name], 0)
61
62 # Things we pull in from all backends
.../python3.6/site-packages/matplotlib/backends/backend_webagg.py in <module>()
325
326 @_Backend.export
--> 327 class _BackendWebAgg(_Backend):
328 FigureCanvas = FigureCanvasWebAgg
329 FigureManager = FigureManagerWebAgg
.../python3.6/site-packages/matplotlib/backends/backend_webagg.py in _BackendWebAgg()
327 class _BackendWebAgg(_Backend):
328 FigureCanvas = FigureCanvasWebAgg
--> 329 FigureManager = FigureManagerWebAgg
330
331 @staticmethod
NameError: name 'FigureManagerWebAgg' is not defined
Matplotlib version
- Operating system: Mac OS 10.12.6
- Matplotlib version: 2.1.0
- Matplotlib backend (
print(matplotlib.get_backend())): WebAgg - Python version: Python 3.6.2
- Jupyter version (if applicable): -
- Other libraries:
I installed matplotlib via pip.
Activity
cknd commentedon Oct 12, 2017
cursory glance suggests that FigureManagerWebAgg has simply moved to
core. this works on my machine:(I'm on the go and can't make a proper PR right now. also not sure this is a complete fix - I can import pyplot now, but when I show a figure, the browser window opens with the "WebAgg current figures" title but stays blank)
anntzer commentedon Oct 12, 2017
Even with the fix in #9347 this stays broken (with the symptoms described in the second message) bisecting back to #9027.
Note that while #9027 is supposed to "only" revert #5754, the webagg backend was working even before #5754 was merged, so I guess something got broken during the revert.
tacaswell commentedon Oct 23, 2017
The issue is that #6370 fixed webagg for renamed files in #5754 but the reversion did not.
tacaswell commentedon Oct 23, 2017
PR coming shortly....got side-tracked by ipython/ipython#10867
FIX: move js files to expected location
anntzer commentedon Nov 1, 2017
closed by #9534, afaict