Hi, I’m Roger, and I’m a self-taught data analyst/scientist (but only on my good days). I spent a lot of time thinking about Python — and here’s a compilation of resources that helped me learn Python and can hopefully help you.
I’ve broken it down to:
Beginner resources for those just starting with programming and Python
Intermediate resources for those looking to apply the basics of Python knowledge to fields like data science and web development
Advanced resources for those looking to get into concepts like deep learning and big data with Python
Exercises that help practice and cement Python skills in practice
Beginner Resources To Learn Python
The official Python site offers a good way to get started with the Python ecosystem and to learn Python, including a place to register for upcoming events, and documentation to get started.
An online book with a paid and a free version. The free version goes into an outline of the content and can be a useful to-do list.
RealPython dives into the different data types in Python in detail. Learn the difference between floating point and integers, what special characters can be used in Python and more.
This simple intro to Python scripts through the command line and text editors will get you up and running for your first Python experiments — a handy tool to get you started as you learn Python.
Codecademy offers a free interactive course that helps you practice the fundamentals of Python while giving you instant, game-like feedback. A great device for learning Python for those who like to practice their way to expertise.
The official Python development class from Google’s developers. This tutorial is a mix of interactive code snippets that can be copied and run on your end and contextual text. This is a semi-interactive way to learn Python from one of the world’s leading technology companies.
This interactive tutorial relies on live code snippets that can be implemented and practiced with. Use this resource as a way to learn interactively with a bit of guidance.
Want an easy, intuitive way to access and work with Python functions? Look no further than Jupyter Notebook. It’s much easier to work with than the command line and different cobbled together scripts. It’s the setup I use myself. This tutorial will help you get started on your path to learn Python.
W3Schools uses the same format they use to teach HTML and others with Python. Practice with interactive and text snippets for different basic functions. Use this tutorial to get a firm grounding in the language and to learn Python.
Kaggle is a platform which hosts data science and machine learning competitions. Competitors work with datasets and create as accurate of a predictive model as possible. They also offer interactive Python notebooks that help you learn the basics of Python. Choose the daily delivery option to have it become an email course instead.
This text-based tutorial aims to summarize all of the basic data and functional concepts in Python. It dives into the versatility of the language by focusing on the object and class portions of the object-oriented part of Python. By the end of it, you should have a neat summary of objects in Python as well as different data types and how to iterate or loop over them.
This simple tutorial on the official Python Wiki is chock-full of resources, and even includes a Chinese translation for non-English speakers looking to learn Python.
Set up in a similar fashion to W3Schools, use Tutorialspoint as an alternative or a refresher for certain functions and sections.
The Quora community is populated with many technologists that learn Python. This section devoted to Python includes running analysis and pressing questions on the state of Python and its practical application in all sorts of different fields, from data visualization to web development.
Dev.to has user-submitted articles and tutorials about Python from developers who are working with it every day. Use these perspectives to help you learn Python.
If you’re a fan of weekly newsletters that summarize the latest developments, news, and which curate interesting articles about Python, you’ll be in luck with Python Weekly. I’ve been a subscriber for many months, and I’ve always been pleased with the degree of effort and dedication placed towards highlighting exceptional resources.
For those who like to learn by video, this list of Youtube channels can help you learn in your preferred medium.
Unlike the rest of the resources listed above, the Hitchhiker’s guide is much more opinionated and fixated on finding the best way to get set up with Python. Use it as a reference and a way to make sure you’re optimally set up to be using and learning Python.
edX uses corporate and academic partners to curate content about Python. The content is often free, but you will have to pay for a verified certificate showing that you have passed a course.
Coursera’s selection of Python courses can help you get access to credentials and courses from university and corporate providers. If you feel like you need some level of certification, similar to edX, Coursera offers a degree of curation and authentication that may suit those needs.
The official Django framework introduction will help you set up so that you can do web development in Python.
This resource from O’Reilly helps fashion a more curated path to learning Django and web development skills in Python.
I learned how to clean and process data with the Pandas Cookbook. Working with it enabled me to clean data to the level that I needed in order to do machine learning and more.
It works through an example so you can learn how to filter through, group your data, and perform functions on it — then visualize the data as it needs be. The Pandas library is tailor-built to allow you to clean up data efficiently, and to work to transform it and see trends from an aggregate-level basis (with handy one-line functions such as head() or describe).
The Pandas cookbook is the perfect intro to it.
The Stack Overflow community is filled with pressing questions and tangible solutions. Use it a resource for implementation of Python and your path to learn Python.
The Python subreddit offers a bunch of different news articles and tutorials in Python.
The Data Science subreddit offers tons of resources on how to use Python to work with large datasets and process it in interesting ways.
I wrote this guide for The Next Web in order to distinguish between Python and R and their usages in the data science ecosystem. Since then, Python has pushed ever-forward and taken on many of the libraries that once formed the central basis of R’s strength in data analysis, visualization and exploration, while also welcoming in the cornerstone machine learning libraries that are driving the world. Still, it serves as a useful point of comparison and a list of resources for Python as well.
One essential skill when it comes to working with data is to access the APIs services like Twitter, Reddit and Facebook use to expose certain amounts of data they hold. This tutorial will help walk you through an example with the Reddit API and help you understand the different code responses you’ll get as you query an API.
Once you’re done crunching the data, you need to present it to get insights and share them with others. This guide to data visualization summarizes the data visualization options you have in Python including Pandas, Seaborn and a Python implementation of ggplot.
If you want a suite of options beyond Django to develop in Python and learn Python for web applications, look no further than this compilation. The Hacker Noon publication will often feature useful resources on Python outside of this article as well. It’s worth a follow.
This text-based tutorial helps introduce people to the basics of machine learning with Python. Towards Data Science, the Medium outlet with the article in question, is an excellent source for machine learning and data science resources.
This free learning path from Springboard helps curate what you need to learn and practice machine learning in Python.
The Machine Learning subreddit oftentimes focuses on the latest papers and empirical advances. Python implementations of those advances are discussed as well.
KDNuggets offers advanced content on data science, data analysis and machine learning. Its Python section deals with how to implement these ideas in Python.
Udemy offers a selection of Python courses, with many advanced options to teach you the intricacies of Python. These courses tend to be cheaper than the certified ones, though you’ll want to look carefully at the reviews.
This introduction to PySpark will help you get started with working with more advanced distributed file systems that allow you to deal and work with much larger datasets than is possible under a single system and Pandas.
The default way most data scientists use Python is to try out model ideas with scikit-learn: a simple, optimized implementation of different machine learning models. Learn a bit of machine learning theory then implement and practice with the scikit-learn framework.
This tutorial walks through more advanced versions of data visualizations and how to implement them, allowing you to take a preview of different advanced ways you can slice your data from correlation heatmaps to scatterplot matricies.
Coursera’s selection of courses on machine learning with Python are veryw well-known. This introduction offered with IBM helps to walk you through videos and explanations of machine learning concepts.
Deeplearning.ai is Andrew Ng’s (the famous Stanford professor in AI and founder of Coursera) attempt to bring deep learning to the masses. I ended up finishing all of the courses: they offer certification and are a refreshing mix of both interactive notebooks where you can work with the different concepts and videos from Andrew Ng himself.
This curated course on deep learning helps break down section-by-section aspects of machine learning. Best of all, it’s completely free. I often use fast.ai as a refresher or a deep dive into a deep learning idea I don’t quite understand.
This tutorial helps you use the high-level Keras component of TensorFlow and Google cloud infrastructure to do deep learning on a set of fashion images. It’s a great way to learn and practice your deep learning skills.
Exercises To Learn Python
Kaggle offers a variety of datasets with user examples and upvoting to guide you to the most popular datasets. Use the examples and datasets to create your own data analysis, visualization, or machine learning model.
Practice Python has a bunch of beginner exercises that can help you ease into using Python and practicing it. Use this as an initial warmup exercise before you tackle different projects and exercises.
The Python exercises on W3Schools follow the sections in their tutorials, and allow you to get some interactive practice with Python (though the exercises are in practice very simple).
HackerRank offers a bunch of exercises that require you to solve without any context. It’s the best way to practice different functions and outputs in Python in isolation (though you’ll still want to do different projects to be able to cement your Python skill.) You’ll earn points and badges as you complete more challenges. This certainly motivates me to learn more. A very useful sandbox for you to learn Python with.
Project Euler offers a variety of ever-harder programming challenges that aim to test whether you can solve mathematical problems with Python. Use it to practice your mathematical reasoning and your Pythonic abilities.
This documentation helps you get on the ground with your first Django app, allowing you to use Python to get something up on the web. Once you’ve started with it, you can build anything you want.
Should you ever be in an interview where your Python skills are at question, this list of interview questions will help as a useful reminder and refresher and a good way for you to practice and cement different Python concepts.