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Installing Python Modules |  |
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Installing Python Modules | |
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After the build command runs (whether you run it explicitly,
or the install command does it for you), the work of the
install command is relatively simple: all it has to do is copy
everything under build/lib (or build/lib.plat)
to your chosen installation directory.
If you don't choose an installation directory--i.e., if you just run
setup.py install--then the install command installs to
the standard location for third-party Python modules. This location
varies by platform and by how you built/installed Python itself. On
Unix and Mac OS, it also depends on whether the module distribution
being installed is pure Python or contains extensions (``non-pure''):
| Platform | Standard installation location | Default value | Notes |
|---|---|---|---|
| Unix (pure) | prefix/lib/python2.0/site-packages | /usr/local/lib/python2.0/site-packages | (1) |
| Unix (non-pure) | exec-prefix/lib/python2.0/site-packages | /usr/local/lib/python2.0/site-packages | (1) |
| Windows | prefix | C:\Python | (2) |
| Mac OS (pure) | prefix:Lib | Python:Lib ** ??? ** | |
| Mac OS (non-pure) | prefix:Mac:PlugIns | Python:Mac:PlugIns** ??? ** |
Notes:
prefix and exec-prefix stand for the directories
that Python is installed to, and where it finds its libraries at
run-time. They are always the same under Windows and Mac OS, and very
often the same under Unix. You can find out what your Python
installation uses for prefix and exec-prefix by
running Python in interactive mode and typing a few simple commands.
Under Unix, just type python at the shell prompt; under Windows,
run ``Python 2.0 (interpreter)'' ** right? **; under Mac OS, ** ??? **.
Once the interpreter is started, you type Python code at the
"»> " prompt. For example, on my Linux system, I type the three
Python statements shown below, and get the output as shown, to find
out my prefix and exec-prefix:
Python 1.6 (#22, Sep 2 2000, 23:54:55) [GCC egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)] on linux2 Copyright (c) 1995-2000 Corporation for National Research Initiatives. All Rights Reserved. Copyright (c) 1991-1995 Stichting Mathematisch Centrum, Amsterdam. All Rights Reserved. >>> import sys >>> sys.prefix '/usr' >>> sys.exec_prefix '/usr'
If you don't want to install to the standard location, or if you don't have permission to write there, then you need to read about alternate installations in the next section.
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Installing Python Modules | |
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