Python upgrade steps under Linux

Install Openssl,openssl-devel First

yum install openssl

yum install openssl-devel

1 switch to the specified directory:

Cd/usr/local

2 Download the source tar package

Linux comes with the download tool wget download as follows:

1	# wget http://www.python.org/ftp/python/2.7.9/Python-2.7.9.tgz

　　Extract

1	tar -xzvf Python-2.7.9.tgz

Build a folder in/usr/local before compiling Python3 (as a Python installation path to avoid overwriting the old version)

1	mkdir/usr/local/python2

　　

Go to the Unpacked folder

1	CD Python-2.7.9

Start compiling the installation

1	./configure --prefix=/usr/local/python2

2

make

3	makeinstall

The old version is not overwritten at this time, then the original/usr/bin/python link is changed to another name

1	mv/usr/bin/python /usr/bin/python_old

Link to build a new version of Python

1	ln-s /usr/local/python2/bin/python /usr/bin/python

This time input

1

python

The new version of Python will be displayed.

PS: If you do not set up a new installation path Python2, but the direct default installation, the installation of the new Python should be overwritten with the old version of Linux, or may not overwrite, the specific installation process, this can be tested by themselves, of course, if you want to keep the original version, So this is the best way to do it.

Python upgrade steps under Linux