Check Quick Guide On How To Create Module In Python

Python is one of the top languages out there in the market even to date. Even some people consider it as the number one language. Therefore many people use it, and many students start their journey through Python. So in today’s article, we will help you to learn how you can use one of the most important features of Python which is modules. We will give you a full tutorial about how to create module in Python

So keep reading this article and get the best information related to the modules in the Python programming language. Let us start by knowing the modules in detail.

What are modules in a Python programming language?

Modules are the set of instructions that are either previously written or written by the user himself. It makes the code writing process easier. Consider a situation where you are working on a big project. 

Therefore you need to write a lot of code. In such a situation, you can take the help of modules. You can write the codes in different files and use them in a single file. This would result in the clean and easy maintenance of your code for the whole project.

As discussed above modules can predefine or be user-define. Therefore there are two types of modules:

  1. Built-in Modules: These are previously defined in the programming language. They help to write the specific codes for particular problems. Some examples are math, os, time etc. With them, you can enhance the productivity and efficiency of your code.
  1. User-defined Modules: As discussed above you can take the help of modules and make your code clean and effective. Take a simple example, you can define the functions accepting two numbers as parameters and then returning the addition, subtraction etc of them. 

For this, you may write them in one file and import them into the main file. And then use them by just passing the numbers. You won’t need to write your Python code again and again.

Some examples of predefined/built-in modules in Python:

  • math module.
  • os module.
  • time module.
  • random module.
  • statistics module.
  • sys module.
  • collections module.

Although there are more than 200 predefined modules in the Python programming language.

Using the predefined module in Python programming language:

Imagine you need to write a program to choose a card from the deck of 52 cards. Then you can make a list of cards and use a random method to choose between them.


import random

arr =[1,2,3,4,5,6,7,8,9,”j”, “q”,”k”]

suit=[“spade”, “heart”, “clubs”, “diamonds”]



print(f’the card is {card1} of {suit1}’)

As seen above you have to first write import random, then you will be able to use it. Now, let’s know how to create module in Python.

How to create module in Python (user defined)?

  1. Create a file having a name (say
  2. Write a function inside it. 

example: def add(a,b):


     3. Import the file in the main file.

import myModule


Note: you can also rename the module and use it

import my module as mm


Advantages of using the modules in the Python

  1. Make the code clean and effective: The main advantage of the modules is that we can make the code clean and easy to maintain. Now we can break the code into smaller parts and save it in different files. We can then use them by importing them. 
  1. Help to keep the related code together: Now you can take the similar codes and put them into one file. For example functions like addition, subtraction, multiplication, division etc can be put together in one file.
  1. Does not affect the entire program: Since you are using the functions only in the main file. Therefore if that particular function shows an error then you can easily debug in that particular file. You won’t have to make changes in the entire main file as well as other files.
  1. Easy to understand and debug: Since code is now broken into smaller parts, therefore, you can maintain them easily. Also, it makes the third person understand your code easily and quickly. It also helps to debug the code easily.
  1. Code reusability: You can declare the code in one file and use the code again and again in other files by just importing them one time.

Let’s wrap it up!

A python module is a Python program file that contains Python code. And it includes Python classes, functions, and variables. 

To put it another way, you can put a Python code file with the extension (.py) that consider as the module. The python module may contain executable code. Moreover, Python modules provide us with the ability to structure our code in a logical manner.

In today’s article, we learnt what modules are in the Python programming language. We learnt both types in detail. Moreover, you get familiarized with how to create module in Python. We also learnt how we can use both of them one by one along with the codes. 

Also, we learned the advantages of using the modules. Lastly, we hope you found our article worth it. In case you did, please leave a positive comment down below. And if not or you have any query then please let us know by commenting down. Also, you can read our other articles also to get the best knowledge. Have a safe and wonderful day ahead!

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