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运行python 或pycharm时报错

[notice] A new release of pip is available: 23.1.2 -> 24.2
[notice] To update, run: python.exe -m pip install --upgrade pip

CMD 进入 DOS

C:\Users\wang>python.exe -m pip install --upgrade pip
Requirement already satisfied: pip in d:\program files\python39\lib\site-packages (23.1.2)
Collecting pip
  WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x00000289A3617640>: Failed to establish a new connection: [WinError 10051] 向一个无法连接的网络尝试了一个套接字操作。')': /packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl
  WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x00000289A36178E0>: Failed to establish a new connection: [WinError 10051] 向一个无法连接的网络尝试了一个套接字操作。')': /packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl
  WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x00000289A3617BB0>: Failed to establish a new connection: [WinError 10051] 向一个无法连接的网络尝试了一个套接字操作。')': /packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl
  WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x00000289A3617D90>: Failed to establish a new connection: [WinError 10051] 向一个无法连接的网络尝试了一个套接字操作。')': /packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl
  WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x00000289A3617FA0>: Failed to establish a new connection: [WinError 10051] 向一个无法连接的网络尝试了一个套接字操作。')': /packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl
ERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Max retries exceeded with url: /packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl (Caused by NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x00000289A361F190>: Failed to establish a new connection: [WinError 10051] 向一个无法连接的网络尝试了一个套接字操作。'))


[notice] A new release of pip is available: 23.1.2 -> 24.2
[notice] To update, run: python.exe -m pip install --upgrade pip

出现这种问题一般就是网络的问题，因为国内拉取代码的速度是比较慢的，尤其是pip，所以建议大家使用国内的镜像源去安装。

例如，使用阿里云、清华大学或豆瓣的镜像源替换默认的 PyPI（Python Package Index）源。在命令行中添加 --index-url 或 -i 参数指定镜像源地址，解决办法：

pip install --index-url https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com --upgrade pip

C:\Users\wang>python.exe -m pip install --index-url https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com --upgrade pip
Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
Requirement already satisfied: pip in d:\program files\python39\lib\site-packages (23.1.2)
Collecting pip
  Downloading https://mirrors.aliyun.com/pypi/packages/d4/55/90db48d85f7689ec6f81c0db0622d704306c5284850383c090e6c7195a5c/pip-24.2-py3-none-any.whl (1.8 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.8/1.8 MB 3.5 MB/s eta 0:00:00
Installing collected packages: pip
  Attempting uninstall: pip
    Found existing installation: pip 23.1.2
    Uninstalling pip-23.1.2:
      Successfully uninstalled pip-23.1.2
Successfully installed pip-24.2

C:\Users\wang>