无法“将 matplotlib.pyplot 导入为 plt"；在虚拟环境中 [英] Unable to "import matplotlib.pyplot as plt" in virtualenv

问题描述

我正在虚拟环境中使用烧瓶.我能够使用 pip 安装 matplotlib，并且我可以在 Python 会话中import matplotlib.但是，当我将其导入为

matplotlib.pyplot 作为 plt

我收到以下错误:

<预><代码>>>>导入 matplotlib.pyplot 作为 plt回溯(最近一次调用最后一次):文件<stdin>"，第 1 行，在 <module> 中 中的文件//anaconda/envs/myenv/lib/python2.7/site-packages/matplotlib/pyplot.py"，第 109 行_backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()文件//anaconda/envs/myenv/lib/python2.7/site-packages/matplotlib/backends/__init__.py"，第32行，在pylab_setupglobals(),locals(),[backend_name],0)文件//anaconda/envs/myenv/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py"，第24行，在<module>从 matplotlib.backends 导入 _macosx运行时错误:Python 未作为框架安装.如果 Python 没有作为框架安装，Mac OS X 后端将无法正常运行.有关在 Mac OS X 上将 Python 作为框架安装的更多信息，请参阅 Python 文档.请重新安装 Python 作为框架，或尝试使用其他后端之一.

我很困惑为什么它要求我安装 Python 作为框架.不是已经存在了吗?将 Python 安装为框架"是什么意思，我该如何安装?

解决方案

这个解决方案 为我工作.如果您已经在虚拟环境中使用 pip 安装了 matplotlib，则只需输入以下内容:

$ cd ~/.matplotlib$ nano matplotlibrc

然后，在其中写入 backend: TkAgg.如果您需要更多信息，只需转到解决方案链接.

I am working with flask in a virtual environment. I was able to install matplotlib with pip, and I can import matplotlib in a Python session. However, when I import it as

matplotlib.pyplot as plt

I get the following error:

>>> import matplotlib.pyplot as plt

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "//anaconda/envs/myenv/lib/python2.7/site-packages/matplotlib/pyplot.py", line 109, in <module>
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "//anaconda/envs/myenv/lib/python2.7/site-packages/matplotlib/backends/__init__.py", line 32, in pylab_setup
    globals(),locals(),[backend_name],0)
  File "//anaconda/envs/myenv/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py", line 24, in <module>
    from matplotlib.backends import _macosx
RuntimeError: Python is not installed as a framework. The Mac OS X backend will not be able to function correctly if Python is not installed as a framework. See the Python documentation for more information on installing Python as a framework on Mac OS X. Please either reinstall Python as a framework, or try one of the other backends.

I am confused about why it asks me to install Python as framework. Doesn't it already exists? What does it mean to "install Python as framework", and how do I install it?

解决方案

This solution worked for me. If you already installed matplotlib using pip on your virtual environment, you can just type the following:

$ cd ~/.matplotlib
$ nano matplotlibrc

And then, write backend: TkAgg in there. If you need more information, just go to the solution link.

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