解决You are using pip version 19.0.3, however version 19.2.3 is available.问题

本文链接： https://blog.csdn.net/qq_43627106/article/details/102540230

升级pip版本：win+r 输入cmd 回车

输入pip install --upgrade pip

Collecting pip
  Downloading https://files.pythonhosted.org/packages/30/db/9e38760b32e3e7f40cce46dd5fb107b8c73840df38f0046d8e6514e675a1/pip-19.2.3-py2.py3-none-any.whl (1.4MB)
    1% |▌                               | 20kB 6.3kB/s eta 0:03:43
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    一连串的红色字
You are using pip version 19.0.3, however version 19.2.3 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

不行，好烦，加个sudo

输入sudo pip install --upgrade pip

Collecting pip
  Downloading https://files.pythonhosted.org/packages/30/db/9e38760b32e3e7f40cce46dd5fb107b8c73840df38f0046d8e6514e675a1/pip-19.2.3-py2.py3-none-any.whl (1.4MB)
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又是一连串的红色字
You are using pip version 19.0.3, however version 19.2.3 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

好吧，还是不行，怎么办呢再加个–user

输入sudo pip install --upgrade pip --user

Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/pip/
Collecting pip
  Downloading https://files.pythonhosted.org/packages/30/db/9e38760b32e3e7f40cce46dd5fb107b8c73840df38f0046d8e6514e675a1/pip-19.2.3-py2.py3-none-any.whl (1.4MB)
    100% |████████████████████████████████| 1.4MB 21kB/s
Installing collected packages: pip
  Found existing installation: pip 19.0.3
    Uninstalling pip-19.0.3:
      Successfully uninstalled pip-19.0.3
Successfully installed pip-19.2.3

哎呀，终于成功了，不容易啊。。。。。

出现该情况是因为服务器连接超时

除了上面的方法外还可以输入下面两行：

python -m pip install --upgrade pip
python -m pip install -U pip

要是上面两行不可以，试试下面这个

easy_install --upgrade pip

Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read timed out. (read timeout=15)")': /simple/pip/
Collecting pip
  Downloading https://files.pythonhosted.org/packages/30/db/9e38760b32e3e7f40cce46dd5fb107b8c73840df38f0046d8e6514e675a1/pip-19.2.3-py2.py3-none-any.whl (1.4MB)
    100% |████████████████████████████████| 1.4MB 21kB/s
Installing collected packages: pip
  Found existing installation: pip 19.0.3
    Uninstalling pip-19.0.3:
      Successfully uninstalled pip-19.0.3
Successfully installed pip-19.2.3

OK，搞定，这样pip升级成功。

再次输入

pip --version

就会看到版本信息了

pip 19.2.3 from d:\python\lib\site-packages\pip (python 3.7)

解决You are using pip version 19.0.3, however version 19.2.3 is available.问题

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