Stack Overflow's answer
譯：
dist-packages is a Debian-specific convention that is also present in its derivatives, like Ubuntu. Modules are installed to dist-packages when they come from the Debian package manager into this location:
dist-packages 是 Debian特定慣例，這也存在於像是ubuntu上。 如果使用Debian軟件管理器安裝， 模塊將被安裝到 dist-packages：
/usr/lib/python2.7/dist-packagesSince easy_install and pip are installed from the package manager, they also use dist-packages, but they put packages here:
自從 easy_install 和 pip (注： 是python的軟件管理其，python有許許多多的軟件) 使用，他們也使用 dist-packages,但是 路徑是：
/usr/local/lib/python2.7/dist-packagesFrom the Debian Python Wiki:
dist-packages instead of site-packages. Third party Python software installed from Debian packages goes into dist-packages, not site-packages. This is to reduce conflict between the system Python, and any from-source Python build you might install manually.
dist-packages取代了site-packages。從Debian安裝包安裝的第三方的Python軟件 被 安裝到 dist-packages,不是 site-packages.這是為了減少，系統自帶python 和 你手動安裝的python 之間的沖突。
This means that if you manually install Python from source, it uses the site-packages directory. This allows you to keep the two installations separate, especially since Debian and Ubuntu rely on the system version of Python for many system utilities.
這就是說，如果你手動安裝python，它會直接使用目錄site-packages。這允許你讓兩個安裝隔離開來，特別是因為Debian 和 Ubuntu 應用 python的系統版本 到 許多的系統實體。
查找Python 安裝路徑： THIS
>>> from distutils.sysconfig import get_python_lib >>> print(get_python_lib())