Python Packages Tutorial – How to Create Your Own Package

Python course with 57 real-time projects - Learn Python

In today’s article, we will discuss Python Packages. Moreover, we will learn the structure of Python Packages and how to import modules from packages in Python.

So, let’s start the Python Packages Tutorial.

Python Packages

Python Packages Tutorial – How to Create Your Own Package in Python

What are Python Packages?

In our computer systems, we store our files in organized hierarchies. We don’t store them all in one location. Likewise, when our programs grow, we divide it into packages.

In real-life projects, programs are much larger than what we deal with in our journey of learning Python. A package lets us hold similar modules in one place.

Like a directory may contain subdirectories and files, a package may contain sub-packages and modules. We have been using modules a lot in the previous lessons.

Remember math, os, and collections? Those were all modules that ship with Python officially. We will discuss the difference between a module and a package in our next lesson.

But for now, let’s dive into the world of Python packages.

Structure of Python Packages

As we discussed, a package may hold other Python packages and modules. But what distinguishes a package from a regular directory? Well, a Python package must have an file in the directory.

You may leave it empty, or you may store initialization code in it. But if your directory does not have an file, it isn’t a package; it is just a directory with a bunch of Python scripts. Leaving empty is indeed good practice.

Take a look at the following structure for a game:

Python Packages Module Structure

Python Packages Module Structure

Here, the root package is Game. It has sub packages Sound, Image, and Level, and file Sound further has modules load, play, and pause, apart from file

Image has modules open, change, and close, apart from Finally, Level has modules start, load, and over, apart from

How to Import Modules from Packages in Python?

A Python package may contain several modules. To import one of these into your program, you must use the dot operator(.)

In the above example, if you want to import the load module from subpackage sound, we type the following at the top of our Python file:

import Game.Sound.load

Note that we don’t type the extension, because that isn’t what we refer to the module as. The subpackage Level has a module named load too, but there is no clash here.

This is because we refer to the module by its fully qualified name.

To escape having to type so much every time we needed to use the module, we could also import it under an alias:

import Game.Sound.load as loadgame

(If you’re working the interpreter, you may also do the following:

This works equally fine.)

Alternatively, you could do:

from Game.Sound import load

Now, if the Sound subpackage has a function volume_up(), we call it this way:

If we imported this way:

from Game.Sound.load import volume_up() as volup

We could call the function simply, without needing to use a full qualifier:

But this isn’t recommended, as this may cause names in a namespace to clash.

Further Notes

When you import a package, only the modules directly under it are imported. An import does not import the sub packages.

>>> import one
>>> one.two


Traceback (most recent call last):File “<pyshell#488>”, line 1, in <module>one.two.evenoddAttributeError: module ‘one’ has no attribute ‘two’

Also note that if you want to check where your Python packages are being created, your path will look something like this:


How to Create Your Own Python Package?

Now, on to the most interesting part. Like we said, Python packages are nothing but a dictionary with sub-packages and modules, and an file.

In our example, this is the hierarchy we create:

Python Packages

How to Create Your Own Python Package

This is what we have in

def check():
          a=int(input('Enter a number'))
          if a%2==0: print("Even")
          else: print("Odd")

Also, we keep each empty.

Now, we import and use it this way:

>>> from one.two.evenodd import check as check
>>> check()


Enter a number7
>>> check()


Enter a number0

So, this was all about Python Packages. Hope you like our explanation.

Python Interview Questions on Packages

  1. What are the Python Packages?
  2. How many packages are there in Python?
  3. What is Python Dist Packages?
  4. How to create a Python package?
  5. Why do we need packages in Python?


In this Python Packages tutorial, we discussed packages, and how to create them. Apart from that, the Python Package Index(PyPI) provides us with a lot of Python packages to help us with our projects.

Your 15 seconds will encourage us to work even harder
Please share your happy experience on Google

follow dataflair on YouTube

11 Responses

  1. Collen Gura says:

    Well done guys. This is excellent. Your explanations have more clarity than I have ever come across for any examples I have ever had on Python Packages. Thank you very much.

    NB: Do you have a similar on on Java or JavaScript?

  2. Krishan Kansal says:

    Its good place to start with python. Contents like editing file, can also be included to wrap the topic. Its seems to like having open ends.

  3. CCR says:

    Thanks for your work! It’s easy to understand. But I want to post a suggestion, I think these words
    “Now if the Sound subpackage has a function volume_up(), we call it this way:loadgame.volume_up(7)” should be modified by
    “Now if the load module has a function volume_up(), we call it this way:loadgame.volume_up(7)

  4. G. H. Vishal says:

    How do I import a python file from another subpackage from within another subpackage

    How can I import file1 from inside of file2 in python

  5. G. H. Vishal says:

    How can I import file1 from inside of file2 in python

  6. Anand says:

    from .packages.subpack1 import file1

  7. Vidyadhar S P says:

    Sir How to install ‘_pywrap_tenserflow’ package

Leave a Reply

Your email address will not be published. Required fields are marked *