The Most Useful Python Modules You Should Know

18 Python modules you need to be aware of.

Tola Ore-Aruwaji
5 min readFeb 7, 2022

In this post, I’ll be sharing with you some Python modules you need to know.
These modules will be split into four different categories to make it easier for you and they are:

  • Web development
  • Data Science
  • Machine Learning & AI
  • Graphical User Interfaces

Machine Learning & AI


TensorFlow is an end-to-end open source platform for machine learning. It has a comprehensive, flexible ecosystem of tools, libraries and community resources that lets researchers push the state-of-the-art in ML and developers easily build and deploy ML powered applications.

TensorFlow is by far the most powerful module in the section it’s maintained and supported by Google. You can perform neural networks, write standard machine learning algorithms, create convolutional neural networks, and style transfers.


Keras is an API designed for human beings, not machines. Keras follows best practices for reducing cognitive load: it offers consistent & simple APIs, it minimizes the number of user actions required for common use cases, and it provides clear & actionable error messages. It also has extensive documentation and developer guides.


Pytorch is an open source machine learning framework that accelerates the path from research prototyping to production deployment.


Sci-kit learn is machine learning framework that supports classification, regression, clustering, model selection, preprocessing, and dimensional reduction.

Web Development

Python is one of the widely used languages to build web applications. You can use it to perform several tasks; in your application and general workloads. You can perform web development using Python, and build web apps and APIs using the Django and Flask framework.

Requests Module

  • The Requests module is used to send HTTP requests with ease. The HTTP request returns a Response Object with all the response data (content, encoding, status, etc).


Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design. Django enables you to take care of your embedded web development stack and it’s open-source. Using Django you can build web applications and integrate them easily into your Python Projects. It’s free and open source


Flask is a web framework, it’s a Python module that lets you develop web applications easily. It’s made up of a collection of libraries and modules that lets you build your web applications without having to install a lot of dependencies.


Twisted is perfect for online game development, you can do other things with it as well. It is also great for communication between clients and servers very easily and it will make your life a lot easier than having to program out your own socket server.


Selenium is an open-source tool. It lets you automate your tests from your web applications and you can test them easily on your web browser.

Data Science

Python is used a lot in DataScience because it supports a lot of libraries and integrations that make analysis, plotting labs etc very easy and faster.


NumPy is an amazing module for you to perform any kind of mathematical operations in Python. It allows you to work with array-like objects of multiple dimensions like matrices and perform all kinds of complicated three dimensions, four dimensions, and five-dimensional math very fast.

One of the major reasons NumPy is so fast is because all the major operations are implemented in C which means using NumPy will actually make your program a lot faster than implementing them in standard python.


Pandas is great for reading and working with data frames. It makes it very easy to manipulate data, work with data, clean data, and get rid of columns.


OpenCV is an extremely powerful module that is used for many different things. Its main focus is on image and video data processing. We can perform things like feature detection and description, object recognition and detection, manipulate data, work with images and draw things on images. it’s an extremely powerful module for really doing anything with image or video data.

Graphical User Interfaces


Kivy is a great module for building applications that will scale to all different platforms. Any Kivy App you build can work on Linux, macOS, Windows, iOS, and Android.

Kivy is straightforward to use.


Tkinter is the de facto way in Python to create Graphical User interfaces (GUIs) and is included in all standard Python Distributions. In fact, it’s the only framework built into the Python standard library.


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