A **python package** is a collection of modules. Modules that are related to each other are mainly put in the same package. When a module from an external package is required in a program, that package can be imported and its modules can be put to use.

> Any Python file, whose name is the module's name with the **.py** extension, is a **module**.


A package is a directory of Python modules that contains an additional `__init__.py` file, which distinguishes a package from a directory that is supposed to contain multiple Python scripts. Packages can be nested to multiple depths if each corresponding directory contains its own `__init__.py` file.



When you import a module or a package, the object created by Python is always of type module. 

> When you import a package, only the methods and the classes in the `__init__.py` file of that package are directly visible.

# Code

For example, let's take the `datetime` module, which has a submodule called `date`. When `datetime` is imported, it'll result in an error, as shown below:



The correct way to use the `date` module is shown below:

from datetime import date
print date.today()

What are Python packages?

A python package is a collection of modules. Modules that are related to each other are mainly put in the same package. When a module from an external package is required in a program, that package can be imported and its modules can be put to use.  Any Python file, whose name is the module s name with the .py extension, is a module.  A package is a directory of Python modules that contains an additional __init__.py file, which distinguishes a package from a directory that is supposed to contain multiple Python scripts. Packages can be nested to multiple depths if each corresponding directory contains its own __init__.py file. 