Linux installation Python 3

Method:

1. Official website:http://www.python.org/download/

2, rz-y upload to Linux decompression TAR-XVZF python-3.5. 1.tgz Enter the directory CD python-3.5. 1/

3. Compile and install

./configure--prefix=/usr/python

TweenConfigureWhen the command finishes executing, it generates amakefile  file, this   makefile The main is the next  make  command. Open  makefile linux  need to follow makefile  The order specified to build   program component. Make command

After performing the make install command to this basic installation is complete

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After the installation is successful, the installation directory is/usr/python

The original python in the system is in/usr/bin/python, ls-l can see that Python is a soft link to the python2.7 in this directory

We can either delete this or create a new Python3 soft link, except that Python will change to Python3 when executed, or the Python script header declaration will be changed to #!/usr/bin/python3

In order to facilitate the suggestion to rename first, and then create a soft link on it, the previous program head does not have to change:

mv/usr/bin/python/usr/bin/ln-s/usr/python/bin/python3/usr/bin/python
Then enter Python to check the Python version  

Linux installation Python 3