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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Cannot import pyplot. NameError:  'FigureManagerWebAgg' is not defined","articleBody":"\r\n### Bug report\r\n\r\nWhen using the webagg backend on 2.1.0, importing pyplot fails with a NameError.\r\n\r\n**Code for reproduction**\r\n```python\r\nimport matplotlib\r\nmatplotlib.use('WebAgg')\r\nfrom matplotlib import pyplot\r\n```\r\n\r\n**Actual outcome**\r\n\r\nI get a name error. traceback excerpt:\r\n```\r\n.../python3.6/site-packages/matplotlib/backends/__init__.py in pylab_setup(name)\r\n     58     # imports. 0 means only perform absolute imports.\r\n     59     backend_mod = __import__(backend_name, globals(), locals(),\r\n---\u003e 60                              [backend_name], 0)\r\n     61 \r\n     62     # Things we pull in from all backends\r\n\r\n.../python3.6/site-packages/matplotlib/backends/backend_webagg.py in \u003cmodule\u003e()\r\n    325 \r\n    326 @_Backend.export\r\n--\u003e 327 class _BackendWebAgg(_Backend):\r\n    328     FigureCanvas = FigureCanvasWebAgg\r\n    329     FigureManager = FigureManagerWebAgg\r\n\r\n.../python3.6/site-packages/matplotlib/backends/backend_webagg.py in _BackendWebAgg()\r\n    327 class _BackendWebAgg(_Backend):\r\n    328     FigureCanvas = FigureCanvasWebAgg\r\n--\u003e 329     FigureManager = FigureManagerWebAgg\r\n    330 \r\n    331     @staticmethod\r\n\r\nNameError: name 'FigureManagerWebAgg' is not defined\r\n```\r\n\r\n\r\n**Matplotlib version**\r\n  * Operating system:  Mac OS 10.12.6\r\n  * Matplotlib version: 2.1.0\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): WebAgg\r\n  * Python version: Python 3.6.2 \r\n  * Jupyter version (if applicable): -\r\n  * Other libraries: \r\n\r\n\r\nI installed matplotlib via pip.\r\n\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\n\r\n","author":{"url":"https://github.com/cknd","@type":"Person","name":"cknd"},"datePublished":"2017-10-12T14:58:11.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/9380/matplotlib/issues/9380"}