Python 3.4 视窗 8.1
已安装的模块：
matplotlib 1.3.1for py 3.4
numpy-MLK 1.9.0b1for py 3.4
dateutil 2.2for
Also is in （安装文档说它需要）py 3.4
six 1.7.3py 3.4
tcl
tkintermsvcp71.dllC:\Windows\System32
运行时：
import matplotlib.pyplot as plt
我收到以下错误消息：
Traceback (most recent call last):
File "<pyshell#284>", line 1, in <module>
import matplotlib.pyplot as plt
File "D:\Downloaded Programs\Python\lib\site-packages\matplotlib\pyplot.py", line 98, in <module>
_backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
File "D:\Downloaded Programs\Python\lib\site-packages\matplotlib\backends\__init__.py", line 28, in pylab_setup
globals(),locals(),[backend_name],0)
File "D:\Downloaded Programs\Python\lib\site-packages\matplotlib\backends\backend_tkagg.py", line 11, in <module>
import matplotlib.backends.tkagg as tkagg
File "D:\Downloaded Programs\Python\lib\site-packages\matplotlib\backends\tkagg.py", line 2, in <module>
from matplotlib.backends import _tkagg
ImportError: DLL load failed: The specified module could not be found.
要点是： Python\lib\site-packages\matplotlib\backends\tkagg.py正在尝试
执行
from matplotlib.backends import _tkagg
但没有这样做。但是_tkagg.pyd目录中确实存在文件
Python\lib\site-packages\matplotlib\backends
为什么这不起作用呢？