Techniques for Importing Modules

There are other variants of import statements that are useful in different situations.

1. To import an individual function or class from a module:

from module_name import object_name

2. To import multiple individual objects from a module:

from module_name import first_object, second_object

3. To rename a module:

import module_name as new_name

4. To import an object from a module and rename it:

from module_name import object_name as new_name

5. To import every object individually from a module (DO NOT DO THIS):

from module_name import *

6. If you really want to use all of the objects from a module, use the standard import module_name statement instead and access each of the objects with the dot notation.

import module_name

Modules, Packages, and Names

In order to manage the code better, modules in the Python Standard Library are split down into sub-modules that are contained within a package. A package is simply a module that contains sub-modules. A sub-module is specified with the usual dot notation.

Modules that are submodules are specified by the package name and then the submodule name separated by a dot. You can import the submodule like this.

import package_name.submodule_name