使用pip安装模块无法正常工作

Question

所以，我试图通过pip安装Crypto软件包，但出现此消息错误：

WARNING: The scripts crypto.exe and decrypto.exe are installed in 'C:\Users\MichałBogusz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\Scripts' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.

所以我将路径添加到PATH变量中，这就是现在在窗口中的样子：

即使在此之后，我仍然无法在我的Python项目中使用此模块。我该如何工作？

Answer 1

就安装软件包而言，您可能只需要重新启动控制台并重试即可。有时PATH变量不会为打开的控制台刷新。

如果您想知道当前控制台的PATH上的内容，可以运行以下命令 echo %PATH%检查您的当前路径。

如果您的软件包已经安装并且想要检查以确保已安装，则可以运行此命令以检查它是否已安装并打印出其安装位置：

import YOUR_MODULE
print(YOUR_MODULE.__file__)

Answer 2

更改路径后，最好重新启动PC（或至少注销并登录），以确保已考虑路径。

如果仍然无法使用：

打开然后打开一个cmd.exe窗口 然后输入

echo %PATH%
where crypto
dir C:\Users\MichałBogusz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\Scripts

并将输出发送给我们

Answer 3

C:\Users\MichałBogusz>echo %PATH%
C:\ProgramData\Anaconda3;C:\ProgramData\Anaconda3\Library\mingw-w64\bin;C:\ProgramData\Anaconda3\Library\usr\bin;C:\ProgramData\Anaconda3\Library\bin;C:\ProgramData\Anaconda3\Scripts;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\PuTTY\;C:\Program Files\Microsoft VS Code\bin;C:\Program Files\MATLAB\R2019b\bin;C:\Users\MichałBogusz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\Scripts;C:\Users\MichałBogusz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\Scripts

C:\Users\MichałBogusz>where crypto
INFO: Could not find files for the given pattern(s).

C:\Users\MichałBogusz>dir C:\Users\MichałBogusz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\Scripts
 Volume in drive C has no label.
 Volume Serial Number is DA0C-C2E7

 Directory of C:\Users\MichałBogusz\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\Scripts

10.10.2019  19:55    <DIR>          .
10.10.2019  19:55    <DIR>          ..
10.10.2019  12:50           103 361 chardetect.exe
07.10.2019  19:36           103 353 jsonschema.exe
07.10.2019  19:36           103 363 jupyter-kernel.exe
07.10.2019  19:36           103 401 jupyter-kernelspec.exe
07.10.2019  19:36           103 359 jupyter-migrate.exe
07.10.2019  19:38           103 361 jupyter-nbconvert.exe
07.10.2019  19:36           103 380 jupyter-run.exe
07.10.2019  19:36           103 364 jupyter-troubleshoot.exe
07.10.2019  19:36           103 392 jupyter-trust.exe
07.10.2019  19:36           103 359 jupyter.exe
10.10.2019  12:50           103 348 naked.exe
07.10.2019  19:37           103 355 pygmentize.exe
07.10.2019  19:36            24 815 pywin32_postinstall.py
07.10.2019  19:36             3 335 pywin32_testall.py
07.10.2019  19:36    <DIR>          __pycache__
              14 File(s)      1 268 546 bytes
               3 Dir(s)  324 672 733 184 bytes free

这就是我得到的