問題描述

我意識到這似乎是一個通用問題，但所有答案都指向同時安裝兩個 python - 我已經卸載了另一個.

I realize this seems like a generic question, but all answers pointed to having two simultanious python installations - I already uninstalled the other one.

目前我從 PyCharm 2017.1.5 (windows 10) 運行我的代碼，Python 解釋器設置為 Python 3.6.1 (C:Anaconda3python.exe)，即我安裝了 Anaconda3，其中包括 matplotlib，并使用 Anaconda3-解釋器從 PyCharm 運行.

Currently I run my code from PyCharm 2017.1.5 (windows 10) with Python interpreter set as Python 3.6.1 (C:Anaconda3python.exe), i.e. I installed Anaconda3, which includes the matplotlib, and run from PyCharm using the Ananconda3-interpreter.

我在 Anaconda Navigator 中檢查了 matplotlib 2.0.2 已安裝在環境中.

I've checked in Anaconda Navigator that matplotlib 2.0.2 is installed in the environment.

一個最小(非工作)示例:

A minimal (non-working) example:

import matplotlib.pyplot as plt

plt.plot(range(10))
plt.show()

返回以下錯誤:

C:Anaconda3python.exe C:/Users/John/Documents/CPU/master/untitled/main11.py
Traceback (most recent call last):
  File "C:/Users/John/Documents/CPU/master/untitled/main11.py", line 1, in <module>
    import matplotlib.pyplot as plt
  File "C:Anaconda3libsite-packagesmatplotlibpyplot.py", line 29, in <module>
    import matplotlib.colorbar
  File "C:Anaconda3libsite-packagesmatplotlibcolorbar.py", line 34, in <module>
    import matplotlib.collections as collections
  File "C:Anaconda3libsite-packagesmatplotlibcollections.py", line 37, in <module>
    import matplotlib.lines as mlines
  File "C:Anaconda3libsite-packagesmatplotliblines.py", line 28, in <module>
    from matplotlib.markers import MarkerStyle
ModuleNotFoundError: No module named 'matplotlib.markers'

Process finished with exit code 1

兩周前運行良好，但現在不行.據我所知，我沒有改變或更新任何東西.模塊加載正確，但似乎是模塊內容發生了變化?如果是這樣:這是怎么發生的，我該如何解決?

This ran fine 2 weeks ago, but not now. To my knowledge, I didn't change or update anything. The module loads correctly, but it seems to be a change in the module content? If so: How did that happen and how can I fix it?

推薦答案

@ImportanceOfBeingErnest 引導我走向正確的方向.我在這里發布我的解決方案.其他人可能會找到答案.問題是磁盤扇區損壞 - 不太可能發生的偶然事件.

@ImportanceOfBeingErnest lead me in the right direction. I post my solution here s.t. others may find the answer. The problem was a corrupted disk sector - an unlikely event of chance.

問題確實出在 matplotlib 包本身.回想起來，問題的指針是預分發包中不應該存在錯誤.如果是這樣，則外部環境一定已損壞，問題不在于 Python 安裝本身.

The problem was indeed in the matplotlib-package itself. Retrospectively, pointers to the issue were that errors in pre-distributed packages should not exist. If they do, external circumstances must have corrupted and the problem is not with the Python-installation itself.

我通過 Anaconda Prompt 使用 conda remove matplotlib 卸載了 matplotlib，然后使用 conda install matplotlib 重新安裝.這給了我這個錯誤:

I uninstalled matplotlib through Anaconda Prompt with conda remove matplotlib and re-installed with conda install matplotlib. This gave me this error:

(C:Anaconda3) C:UsersJohn>conda install matplotlib
[...]
ERROR conda.core.link:_execute_actions(337): An error occurred while installing package 'defaults::matplotlib-2.0.2-np112py36_0'.
OSError(22, 'Invalid argument') Attempting to roll back. 

OSError(22, 'Invalid argument')

在@Ernest 發表評論之前，我認為這可能與 非 ASCII 在 PATH 或類似的.

Before @Ernest's comment, I thought it maybe had to do with non-ASCII in PATH or similar.

相反，我嘗試完全重新安裝 Anaconda3，重新啟動后發現部分 Anaconda3 文件夾沒有被刪除(包含 matplotlib 的文件夾).

Instead I tried to reinstall Anaconda3 completely, restarted and found that part of the Anaconda3-folder weren't removed (the one containing the matplotlib).

手動刪除它會導致 Windows 錯誤 0x80070570.關注 ServerFault 上的這篇文章(對 OP 的評論) 我進行了檢查，然后從 Windows Explorer GUI 進行了修復:右鍵單擊 This PC 中的驅動器 --> Properties --> Tab Tools --> Check(如果發現任何錯誤，repair就會出現).

Deleting it manually gave a Windows error 0x80070570. Following this post on ServerFault (the comment to OP) I ran a check and afterwards a repair from Windows Explorer GUI: Right-click on the drive in This PC --> Properties --> Tab Tools --> Check (repair appears if any errors are found).

重新啟動后，從頭開始重新安裝 Anaconda3 并再次重新啟動，我能夠再次運行我的項目！

After some restarts, reinstalling Anaconda3 from scratch and restarting again, I was able to run my project again!

這篇關于Python:“ModuleNotFoundError"，但安裝了模塊?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！