問題描述：

1.當你卸載python庫的時候，如：pip uninstall pandas

2.當你想要更新python庫的時候，如：pip install --upgrade pandas

等等… 就會出現PermissionError: [WinError 5] 問題

廢話不多說，分三步完全解決該問題：

第一步：

關閉跟python相關的所有程序，如jupyter，pycharm，Anaconda等等，這一步非常重要！！！

好了，第一步完成下面開始常規操作的兩步：

第二步：

賦予用戶對python的“完全控制”的權限，步驟如下：

找到按照python的位置，本文用的是Anaconda，安裝在D盤，位置為：D:Anaconda3。找到python->右鍵->屬性->安全->點擊“組或用戶名”中的Users->編輯->點擊點擊“組或用戶名”中的Users->把“完全控制”打鉤->應用->OK

第三步：

執行完第二步一般就能解決問題。如果還沒解決問題的話，請執行第三部，找到你安裝python的文件夾，本人用的是Anaconda3，那么就直接對該文件夾（本人安裝位置為D:Anaconda3），右鍵屬性，按照第二步的方法執行一遍就OK了！

當然，如果你用的pycharm或其他軟件安裝的python，那么就找到你安裝位置的那個文件夾，同理右鍵->屬性，執行第二步的方法， 搞定！

**總結：**一定要關閉所有跟python相關的程序！

補充知識：jupyter notebook_啟動出錯_ValueError: Please install nodejs 5+ and npm before continuing installation.

錯誤描述：

在啟動jupyter notebook的時候雖然能進入Home，但是后臺還是報錯,如下：

[W 11:03:21.011 NotebookApp] Error loading server extension jupyterlab Traceback (most recent call last): File 'E:Anaconda3libsite-packagesjupyterlabcommands.py', line 321, in __init__ self._run([’node’, ’node-version-check.js’], cwd=HERE, quiet=True) File 'E:Anaconda3libsite-packagesjupyterlabcommands.py', line 1165, in _run proc = Process(cmd, **kwargs) File 'E:Anaconda3libsite-packagesjupyterlabprocess.py', line 73, in __init__ self.proc = self._create_process(cwd=cwd, env=env) File 'E:Anaconda3libsite-packagesjupyterlabprocess.py', line 131, in_create_process cmd[0] = which(cmd[0], kwargs.get(’env’)) File 'E:Anaconda3libsite-packagesjupyterlabjlpmapp.py', line 59, in which raise ValueError(msg) ValueError: Please install nodejs 5+ and npm before continuing installation. nodejs may be installed using conda or directly from the nodejs website. During handling of the above exception, another exception occurred: Traceback (most recent call last): File 'E:Anaconda3libsite-packagesnotebooknotebookapp.py', line 1454,in init_server_extensions func(self) File 'E:Anaconda3libsite-packagesjupyterlabextension.py', line 111, in load_jupyter_server_extension info = get_app_info(app_dir) File 'E:Anaconda3libsite-packagesjupyterlabcommands.py', line 244, in get_app_info handler = _AppHandler(app_dir, logger) File 'E:Anaconda3libsite-packagesjupyterlabcommands.py', line 324, in __init__ raise ValueError(msg) ValueError: Please install nodejs 5+ and npm before continuing installation. nodejs may be installed using conda or directly from the nodejs website.[I 11:03:21.336 NotebookApp] Serving notebooks from local directory: C:UsersAdministratorDesktopshuju[I 11:03:21.338 NotebookApp] 0 active kernels[I 11:03:21.339 NotebookApp] The Jupyter Notebook is running at:[I 11:03:21.340 NotebookApp] http://localhost:8888/?token=14172d7abed02b6a0b816a51fa29f6b44929d2f96b8a1b7f[I 11:03:21.342 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).[C 11:03:21.350 NotebookApp] Copy/paste this URL into your browser when you connect for the first time, to login with a token: http://localhost:8888/?token=14172d7abed02b6a0b816a51fa29f6b44929d2f96b8a1b7f[I 11:03:21.581 NotebookApp] Accepting one-time-token-authenticated connection from ::1[I 11:15:21.364 NotebookApp] Interrupted...[I 11:15:21.366 NotebookApp] Shutting down 0 kernels

解決方案：

因為我的電腦上安裝了Anaconda，所以我打開Anacoda后

等待系統安裝，完成后在cmd命令行中再次輸入jupyter notebook,問題解決

以上這篇三步解決python PermissionError: [WinError 5]拒絕訪問的情況就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持好吧啦網。