Python3.5 backend_tkagg 不再可用？

Question

我正在尝试运行之前正在运行的应用程序。它曾经在 Ubuntu 和 Windows 7 上运行。我现在有一台 Windows 10 机器，代码失败了。可能是因为我现在使用的是 python 3.5，但坦率地说，我不记得我在其他机器(不再可用)上使用的是什么。

关键行是:

import matplotlib
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg

前段时间已经从各个地方解除了。但是，现在当我运行它时，它会抛出一个错误:

Traceback (most recent call last):
  File "C:\....py", line 17, in <module>
    from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
  File "C:\Users\...\AppData\Local\Programs\Python\Python35-32\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 13, in <module>
    import matplotlib.backends.tkagg as tkagg
  File "C:\Users\g...\AppData\Local\Programs\Python\Python35-32\lib\site-packages\matplotlib\backends\tkagg.py", line 9, in <module>
    from matplotlib.backends import _tkagg
ImportError: DLL load failed: The specified module could not be found.

在交互式 session 中，似乎是第三行失败了:

>>> import matplotlib
>>> matplotlib.use("TkAgg")
>>> from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
  File "C:\Users\...\AppData\Local\Programs\Python\Python35-32\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 13, in <module>
    import matplotlib.backends.tkagg as tkagg
  File "C:\Users\...\AppData\Local\Programs\Python\Python35-32\lib\site-packages\matplotlib\backends\tkagg.py", line 9, in <module>
    from matplotlib.backends import _tkagg
ImportError: DLL load failed: The specified module could not be found.

我试过了

pip uninstall matplotlib
pip install matplotlib

在命令提示符下，但错误仍然存​​在。

似乎有一个 python-matplotlib-tk 包，但我不确定这是什么。

我应该回到 python 3.4，还是有解决方案？这是一个已知问题吗？

---

回应以下关于安装 matplotlib 的评论:

C:\>pip install matplotlib
Collecting matplotlib
  Downloading matplotlib-1.5.1-cp35-none-win32.whl (6.2MB)
    100% |################################| 6.2MB 67kB/s
Requirement already satisfied (use --upgrade to upgrade): numpy>=1.6 in c:\users\...\appdata\local\programs\python\python35-32\lib\site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): pytz in c:\users\...\appdata\local\programs\python\python35-32\lib\site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): python-dateutil in c:\users\...\appdata\local\programs\python\python35-32\lib\site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): cycler in c:\users\...\appdata\local\programs\python\python35-32\lib\site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): pyparsing!=2.0.4,>=1.5.6 in c:\users\...\appdata\local\programs\python\python35-32\lib\site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): six>=1.5 in c:\users\...\appdata\local\programs\python\python35-32\lib\site-packages (from python-dateutil->matplotlib)
Installing collected packages: matplotlib
Successfully installed matplotlib-1.5.1

Answer 1

我遇到了同样的问题

我阅读了 matplotlib 中的文档

For Python 3.5 the Visual C++ Redistributable for Visual Studio 2015 needs to be installed. In case Python 2.7 to 3.4 are not installed for all users (not the default), the Microsoft Visual C++ 2008 ( 64 bit or 32 bit for Python 2.7 to 3.2) or Microsoft Visual C++ 2010 ( 64 bit or 32 bit for Python 3.3 and 3.4) redistributable packages need to be installed.

然后我安装了the Visual C++ Redistributable for Visual Studio 2015解决了问题