Configuration of Python installation and environment variables in Windows and Linux environments

Windows

1. Version selection

   This learning process is used for the preparation of server-side automation scripts, using version 2.7, and optionally 3.6 versions if required

2. https://www.python.org/downloads/windows/

3. Install the installation package

   Control Panel \ All Control Panel items \ System

   Select Advanced System Settings

   Select environment variable settings in the Advanced tab page

   Add the path to the Python installation in path

4. Check the installation

   Enter Python in Cmd to see if the installation was successful

Linux

1. Version selection

   This learning process is used for the preparation of server-side automation scripts, using version 2.7, and optionally 3.6 versions if required

2. https://www.python.org/downloads/source/

3. Install the installation package

   Installation without dual version presence

   1) Download the source package

   2) Unzip the source package and enter the folder

   ./configure; Make && make install

   3) Use Python-v to see if the installation is successful and the installation will display Python version information

   Requires dual version to install Python version

   1) ditto, need to download 3.6 source Package

   2) Unzip the source package and enter the folder

   You need to manually create a Python directory before installing mkdir/usr/local/python3.6

   Installation directories need to be manually specified at install time

   ./configure--prefix=/usr/local/python3.6

   Make && make install

   3) post-installation configuration

   Back up the original Python launcher mv/usr/bin/python/usr/bin/python_old

   Soft-connect the newly installed Python version to the original startup program Ln-s/usr/local/python3.6/bin/python3.6/usr/bin/python

   4) Modify the Python path in the Yum source

   Vi/usr/bin/yum

4. #!/usr/bin/python modified to:/usr/bin/python_old
5. 
   

6. Installation Check

   Python-v viewing the Python installation version

Simply write a python program that outputs Hello World

# python

>>> print "Hello World"

Hello World

>>> print ' Hello World '

Hello World

This article is from the "Coarse bread" blog, make sure to keep this source http://culiangmianbao.blog.51cto.com/10475024/1972948

Configuration of Python installation and environment variables in Windows and Linux environments