Install Python 3 on CentOS 6.5

Install Python 3 on CentOS 6.5

1. check python version on current Linux OS and download Python3 source code package

2. setup compilation、 make、make install

3. create a link to python 3

Existing Python Packages

You may already have Python installed on your server, you can verify using:

[rainbow@master Desktop]$ which python
/usr/bin/python
[rainbow@master Desktop]$ python --version
Python 2.6.6
[rainbow@master Desktop]$ python
Python 2.6.6 (r266:84292, Jan 22 2014, 09:42:36)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>

Download Python 3

First, visited python web and download source code package that you want to use, for this example I’m downloading the latest stable version 3.4.3:

https://www.python.org/downloads/ [ download page ]

Install Python 3

Next, go to the download directory and extracted package

[rainbow@master ~]$ cd Downloads/
Python-3.4.3.tgz
[rainbow@master ~]$ tar -xvf Python-3.4.3.tgz
[rainbow@master ~]$ ls
Python-3.4.3
Python-3.4.3.tgz

then, go to the extracted Python directory:

[rainbow@master ~]$ cd Python-3.4.3
[rainbow@master Python-3.4.3]$ ls
build          Include          Misc            python
config.guess   install-sh       Modules         Python
config.log     Lib              Objects         python-config
config.status  libpython3.4m.a  Parser          python-config.py
config.sub     LICENSE          PC              python-gdb.py
configure      Mac              PCbuild         README
configure.ac   Makefile         pybuilddir.txt  setup.py
Doc            Makefile.pre     pyconfig.h      Tools
Grammar        Makefile.pre.in  pyconfig.h.in

Then setup compilation:

[rainbow@master Python-3.4.3]$ ./configure

Note: If you receive the error: configure: error: no acceptable C compiler found in $PATH during this step, run this command before configuring:

[rainbow@master Python-3.4.3]$ yum install gcc

Then build:

[rainbow@master Python-3.4.3]$ make

And install:

[rainbow@master Python-3.4.3]$ make install

Next, verify Python 3 installation:

[rainbow@master Python-3.4.3]$ /usr/local/bin/python3 --version
Python 3.4.3

Finally, create a link to Python 3 executable for easy usage:

[rainbow@master Python-3.4.3]$ ln -s /usr/local/bin/python3 /usr/bin/python3

And check:

[rainbow@master Python-3.4.3]$ python3 --version
Python 3.4.3
[rainbow@master Python-3.4.3]$ python3
Python 3.4.3 (default, Jun 18 2015, 16:32:03)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

Now Python 3 is successfully installed and working.