A Python 2.7 programming tutorial

Modules are yet another example of a Python namespace, just as we've discussed in Section 2.2, “The assignment statement” and Section 5.3, “A namespace is like a dictionary”.

When you import a module using the form “import moduleName”, you can refer to some name N inside that module using the period operator: “moduleName.N”.

So, like any other namespace, a module is a container for a unique set of names, and the values to which each name is connected.