Update the Python version under Linux and modify the default version

Source: Internet
Author: User

Update the Python version under Linux and modify the default version, as a friend can refer to.

In many cases the server Python version is very low, you need to change the default Python version yourself
    • 1, download the Python installation package from the official website (this version can be any version 3.3 2.7 2.6, etc.)
    • wget http://python.org/ftp/python/2.7/Python-2.7.tar.bz2
-2. Unzip and install
tar -jxvf Python-2.7.tar.bz2 cd Python-3.3.0 ./configuremake all make installmake cleanmake distclean
    • 3, Python By default is installed in/usr/local/bin/python2.7, you can execute the following command to view the version
    • /usr/local/bin/python2.7-v The default python for the system is placed at/usr/bin/python2.6 (this 2.6 is the default version of the system)
    • As a result, a soft connection is required to point to the current system's default Python directory, allowing the system to use the new Python version
    • mv/usr/bin/python/usr/bin/python2.6//operate on the system default version of Python
    • Ln-s/usr/local/bin/python2.7/usr/bin/python//Note The first path is a newly installed Python version path, and the second path is the system default path
    • When the modification is complete, enter python-v or Python to see that the version number has been modified to the newly installed version
Ps:
    • 1, modified the new Python version, then the original installation of the Python plug-in is not in the new version of the Python directory, so need to reinstall
    • 2, some people update the Python version can not use Yum, need to modify its configuration file for Yum
    • Vi/usr/bin/yum Change the #!/usr/bin/python of the file header to #!/usr/bin/python2.6 (note that this is the previous version of the Python number, since the old version can support Yum)
    • The above is a small series to share the Linux update Python version and modify the default version of the method, I hope you like.

Update the Python version under Linux and modify the default version

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