Python pip installs some packages that are not found in the problem Could not find a version of that satisfies ....

Sometimes we use the download Python's own pip to install some toolkit, will report the following error

A satisfactory version is not found and our PIP may need to be upgraded, so use

python-m pip Install--upgrade pip

Upgrade Pip,--upgrade followed by the name of the library that needs to be upgraded

Then continue to try to find or not, will report the same error, when considering the network is a problem, my network is sometimes unstable, then we use the domestic image source to accelerate

Pip Install package name-I http://pypi.douban.com/simple/--trusted-host pypi.douban.com

--trusted-host pypi.douban.com This is to get the SSL certificate authentication

Successful execution!

But each time this manual input will be more troublesome, it is recommended to change the system for the first time to replace the domestic mirror source, the specific configuration please refer to

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Python pip installs some packages that are not found in the problem Could not find a version of that satisfies ....