Build a Python development environment

Preparatory work

Python is a high-level programming language for interpreting, object-oriented, and dynamic data types. Let's start by looking at whether Python already exists in the system and installing some development kits:

Pre-Installation Preparation

Look at the Python version in the current system and you can see that this server in the lab has Python 2.6.6 installed.

Python--version

To check the CentOS version, we can see that the CentOS version of this server is CentOS release 6.8

Cat/etc/redhat-release

To avoid subsequent installation errors, let's install the development kit first

Install development Tools First

Yum groupinstall-y "Development tools"

Then install the other kit

Yum install-y zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel

Install Python

Download, compile, and install Python 2.7.13

There is no new python in the Yum source, we download the Python 2.7.13 in the official website

wget https://mc.qcloudimg.com/static/archive/b577469e4ed03782eb1f62e8fd6125a5/Python-2.7.13.tar.gz

When the download is complete, unzip the installation package

Tar zxvf python-2.7.13.tar.gz

Go to Folder Python-2.7.13

CD Python-2.7.13

Perform configure file precompilation

./configure

Compiling and installing

Make && make install

Configure Python

Update system default Python version

Rename the default legacy Python from the system first

Mv/usr/bin/python/usr/bin/python.old

Then delete the system default Python-config soft link

Rm-f/usr/bin/python-config

Finally create a new version of the Python soft link

Ln-s/usr/local/bin/python/usr/bin/pythonln-s/usr/local/bin/python-config/usr/bin/python-configln-s/usr/local/ include/python2.7//usr/include/python2.7

To edit the/usr/bin/yum file, change the first line of Python in the code to point to the old python2.6 version, and modify the contents to refer to the following:

Yum

#!/usr/bin/python2.6import systry:    import yumexcept importerror:     print >> sys.stderr,  "" "\nthere was a problem  importing one of the python modulesrequired to run yum. the  Error leading to this problem was:   %splease install a  package which provides this module, orverify that the module  is installed correctly. It ' S POSSIBLE THAT THE ABOVE MODULE DOESN ' t match thecurrent  Version of python, which is:%sif you cannot solve this problem  yourself, please go tothe yum faq at:  http://yum.baseurl.org/ Wiki/faq "" " %  (sys.exc_value, sys.version)     sys.exit (1) sys.path.inserT (0,  '/usr/share/yum-cli ') try:    import yummain     Yummain.user_main (sys.argv[1:], exit_code=true) except keyboardinterrupt, e:     print >> sys.stderr,  "Exiting on user cancel."     sys.exit (1)

And look at the Python version, and now we're looking at the latest edition.

Python--version

Install some tools for the new Python

Install PIP for new Python

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

Installing third-party libraries using PIP requests

PIP Install requests

This article is from the "practice of Knowledge" blog, please be sure to keep this source http://m51cto.blog.51cto.com/53087/1959189

Build a Python development environment