CentOS6.7 Upgrade Python3.4.3

1. Check the existing Python version

[Root@xu ~]# Python-v

Python 2.6.6

[Root@xu ~]#

2. Download Python3.4.3

Download and upload to the TMP directory

[Root@xu tmp]# ls

Python-3.4.3.tgz Yum.log

[Root@xu tmp]#

3. Create a Python installation directory

[Root@xu tmp]# mkdir/opt/python3.4

4. Unzip the tar file

[Email protected] tmp]# TAR-ZXVF python-3.4.3.tgz

[Email protected] tmp]# CD Python-3.4.3

[Email protected] python-3.4.3]# pwd

/tmp/python-3.4.3

5. Configuration and Installation

[Email protected] python-3.4.3]#/configure--prefix=/opt/python3.4/

[[email protected] python-3.4.3]# make

[[email protected] python-3.4.3]# make install

6. establish a soft connection so that the system default Python points to the newly installed Python

[Email protected] tmp]# mv/usr/bin/python/usr/bin/python2.6.6

[email protected] tmp]# ln-s/opt/python2.7/bin/python2.7/usr/bin/python

[Email protected] tmp]# python-v

Python 3.4.3

Yes, to this upgrade success, and then edit the Yum default python for the old version of Python

[Email protected] tmp]# Vim/usr/bin/yum

Modify the first line as follows

Modified before: #!/usr/bin/python

Modified: #!/usr/bin/python2.6.6

Save exit: (Vim command): Wq

Note: Easy_install and PIP are not installed, and you need to configure environment variables after installation.

Download setuptools-18.3.2.tar.gz

Unzip and install

[Email protected] tmp]# TAR-ZXVF setuptools-18.3.2.tar.gz

[[email protected] setuptools-18.3.2]# python setup.py install

Install PIP

[[email protected] tmp]# easy_install pip

-bash:easy_install:command not found

Configuring Python Environment variables

[Email protected] tmp]# Vim/etc/profile

At the back, add

python_home=/opt/python3.4

Export path= $PYTHON _home/bin: $PATH

Save exit

[Email protected] tmp]# Source/etc/profile

Execute the above command, the environment variable takes effect immediately

Install PIP

[[email protected] tmp]# easy_install pip

Searching for PIP

Best Match:pip 6.0.8

Adding pip 6.0.8 to easy-install.pth file

installing PIP Script To/opt/python3.4/bin

Installing pip3.4 Script To/opt/python3.4/bin

Installing PIP3 Script To/opt/python3.4/bin

Using/opt/python3.4/lib/python3.4/site-packages

Processing dependencies for PIP

Finished processing dependencies for PIP

This Ok,python upgrade is complete, Easy_install and PIP commands can be used normally

CentOS6.7 Upgrade Python3.4.3