matplotlib.pyplot错误“导入错误：无法导入名称'_path'”

Question

I came across an ImportError in the importing of matplotlib.pyplot on Windows 10 Pro

Here is the full error:

Traceback (most recent call last):
  File "C:\Users\****\Dropbox\Code\Python\lib_test.py", line 1, in <module>
    import matplotlib.pyplot as plt
  File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\pyplot.py", line 31, in <module>
    import matplotlib.colorbar
  File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\colorbar.py", line 32, in <module>
    import matplotlib.artist as martist
  File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\artist.py", line 16, in <module>
    from .path import Path
  File "C:\Users\****\AppData\Roaming\Python\Python36\site-packages\matplotlib\path.py", line 21, in <module>
    from . import _path, rcParams
ImportError: cannot import name '_path'

Here is the script:

import matplotlib.pyplot as plt

squares = [1, 4, 9, 16, 25]
plt.plot(squares)
plt.show()

If anyone could help me, much appreciated.

Answer 1

Dunno什么是mpip，或者为什么，尝试使用普通的旧pip（或者在您的情况下，可能是pip3？这可能与基本Python的安装方式有更多关系，为什么我建议使用Anaconda安装所有（自动安装） MPL也是..）

Answer 2

It can be a problem related to matplotlib version. I had the same problem and solved it uninstalling the existing version of matplotlib (in my case with conda but the command is similar substituing pip to conda ) so: firstly uninstalling with:

conda uninstall matplotlib (or pip uninstall matplotlib)

and after the successful removal of the existing version (mine was 2.2.2), the following command installed a successive version, that can be specified with '==' after the module name:

 conda install matplotlib==3.0.2 (or pip install matplotlib==3.0.2)

and the error disappears. The uninstall command removed also seaborn installation so it was necessary to install it after matplotlib but it was easy... Yeah!:)

Answer 3

Since you're probably like me and doing a lot of installing/importing , it can be just a mishap in the original matplotlib install... so try doing the ol' get out, walk around to the back side and give it a kick...

conda uninstall matplotlib
#let it do its thing

conda install matplotlib
#let it do its thing

Then test it on the code you're trying to do and see if it works. In my case, it came down to a "_Path" issue in my original install that messed up things. After the uninstall/install , I was fine.