python3.6 environment on the CentOS cloud service shelves

The management of the cloud service is an SSH tool. I had to mobaxterm for a while, and I was amazed at how Putty I felt canary for years. The free version has already been used, it is convenient for the United States to use to know the good:

This is where you record the setup steps:

1, this server OS is CentOS 7.3, the python2.7 version of the default line. So the first installation python3.6 replaced python2.7 as an implicit python environment.

PYTHON-V//Can see the Python version now
Which Python//can see the executable file location of Python now

Install Python3 and a bunch of software packages first

sudoyuminstall python36
Sudu Yum Install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make

You need to modify the system to recognize the Python path after you have prepared it:

MV /usr/bin/python/usr/bin/python_old

Create software to perform a catalogue/usr/bin

LN -s/usr/local/python3/bin/python3/usr/bin/python

This time python-v should be the new version. You can see the 2 version with Python2-v.

But it's not over, Yum uses py2, and after that it's a bad thing for Yum to get rid of Yum's configuration.

vim /usr/bin/Yum

Vim/usr/libexec/urlgrabber-ext-down

Put #! /usr/bin/python modified to #! /usr/bin/python2

2, next to modify the configuration of the PIP, now the PY3 environment is not installed in the PIP, so you have to download one.

Curl https://bootstrap.pypa.io/get-pip.py-o get-pip.py

Download it.

Python get-pip.py

And then go into the/usr/bin. Change PIP configuration

Vim/usr/bin/pip

Change the first line to #! /usr/bin/python. Basically, Pip is py3 down the line.

3, and then swap out Pip's default to the PIP source in the country, or it's too slow.

/etc/pip.conf

~/.pip/pip.conf

~/.config/pip/pip.conf

These files, if not created. It is good to write the source of Douban in the document.

[global]trusted-host=pypi.douban.comindex-url=http://Pypi.douban.com/simple 

python3.6 environment on the CentOS cloud service shelves