Where is the installation directory for the python module?
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One of the important reasons for the power of Python is that Python has a rich library (module) so that it can easily deal with a variety of problems. Third-party modules developed by Python is generally installed in some fixed paths, as follows:
Unix (Linux): prefix/lib/pythonX.Y/site-packages default path: / usr/local/lib/pythonX.Y/site-packages
Windows: prefix\ Lib\ site-packages default path: C:\ PythonXY\ Lib\ site-packages
In addition, on Unix-like systems, the build-in module of Python itself is generally located at: / usr/lib/pythonX.Y/site-packages
The command to install a module from the source code is generally: setup.py install
Of course, you can change the default third-party module installation path as needed, and you can specify the installation path by adding parameters such as-user, or-home, or-prefix and-exec-prefix, or-install-base and-install-platbase, etc.
It is important to note that the installation path of the module must be in the sys.path List before it can be properly import in the script.
On the installation of the module, the official reference document of Python is: http://docs.python.org/3.3/install/index.html#how-installation-works
In addition, on the Linux of the Debian series (including Ubuntu), dist-packages is generally used instead of the site-packages directory; this is also explained on the website of the Debian project, which can be found at: http://wiki.debian.org/Python#Deviations_from_upstream
Here are some paths to the Python module that I see on my system:
# on a RHEL6.3 x86-64 system
[root@jay-linux ~] # cat / etc/issue
Red Hat Enterprise Linux Server release 6.3 (Santiago)
Kernel\ r on an\ m
[root@jay-linux ~] # ls / usr/lib/python2.6/site-packages/
[root@jay-linux ~] # ls / usr/lib64/python2.6/site-packages/
[root@jay-linux ~] # ls / usr/local/lib64/python2.6/site-packages/
# switch to a Ubuntu x86-64 system
Master@jay-intel:~$ cat / etc/issue
Ubuntu 12.04.1 LTS\ n\ l
Master@jay-intel:~$ ls / usr/lib/python2.7/dist-packages/
Master@jay-intel:~$ ls / usr/local/lib/python2.7/dist-packages/
Easy-installNaNh mysql_connector_repackaged-0.3.1-py2.7.egg
Master@jay-intel:~$ python3
Python 3.2.3 (default, Oct 19 2012, 20:10:41)
[gcc 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
> import sys
> sys.path
['', / usr/local/lib/python3.2/dist-packages/mysql_connector_repackaged-0.3.1-py3.2.egg','/ usr/lib/python3.2','/ usr/lib/python3.2/plat-linux2','/ usr/lib/python3.2/lib-dynload','/ usr/local/lib/python3.2/dist-packages','/ usr/lib/python3/dist-packages']
> > >
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