'dist-packages'与'site-packages'中的Python模块

Question

I am building a deb package from source. The source used to install the modules in 'site-packages' in RHEL.

On Ubuntu, 'site-packages' doesn't work for me. Searching over the net, it says that python Ubuntu would require it in 'dist-packages'

But there are also references that python built from source would look in 'site-packages'

Now I am confused, where should my deb packages install the modules so that it works irrespective of python built from source or installed from Ubuntu repo

Answer 1

dist-packages is a Debian convention that is present in distros based on Debian. When we install a package using the package manager like apt-get these packages are installed to dist-packages. Likewise, if you install using pip and pip is installed via package manager then these packages will be installed in dist-packages.

If you build python from source then pip comes with it, now if you install a package using this pip it'll be installed into site-packages.

So It depends on which python binary you are using if you are using the binary that comes from package manager it will search in dist-packages and if you are using a binary from manual install it'll search in site-packages.

Answer 2

从我从IRC学到的是我应该只在'dist-packages'中安装模块，假设管理员只安装了Ubuntu repo提供的python。

Answer 3

There is a "purelib" and a "platlib" directory. You can find out what they are by running:

$ python -c "import sysconfig; print sysconfig.get_paths()['purelib']"

$ python -c "import sysconfig; print sysconfig.get_paths()['platlib']"

Note however that by doing this you already select a certain python installation. As said above, the exact path depends on the installation.