Summary of Python environment issues in the CentOS configuration

1, install Python3 is mainly version problem, with 3.6 better than 3.7

Error Modulenotfounderror:no module named ' _ctypes '

Https://www.cnblogs.com/Mr-wangxd/p/7028285.html

2, there have been error pkg_resources when installing Pip . Distributionnotfound:the ' pip==7.1.0 ' distribution was wasn't found and is ....

A few times toss, still accidentally put a lot of original Python deleted, this is really wrong operation!

python-m pip uninstall pip Setuptools again reload, or not, just

The main is to put the first ls-l to see its soft connection there.

ls-l grep python

Ls-l grep pip

Ln-s/usr/python/bin/python3/usr/bin/python

ln-s/usr/python/bin/pip3/usr/bin/pip   When I correctly point to the PIP3 in the new Python3 directory, it is correct and there is no version problem.

Key commands:

python-m pip uninstall pip Setuptoolspip install --upgrade setuptools

Python-m pip--version This check version, on this error, important

centos7.2, the system comes with python2.7. When upgrading to Python3, import Sqlite3 appears no module named _sqlite3 workaround

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Summary of Python environment issues in the CentOS configuration