Python built-in data structures like list, sets, dictionaries provide a large number of operations making it easier to write concise code but not being aware of their complexity can result in unexpected slow behavior of your python code. For example: A simple dictionary lookup Operation can be done by either: if key in d:. Cheat Sheet ¶ This part mainly focuses on common snippets in Python code. The cheat sheet not only includes basic Python features but also data structures and algorithms.

1. Python Basics Cheat Sheet
2. Easy Python Code Cheat Sheet

Cheat sheets can be really helpful when you’re trying a set of exercises related to a specific topic, or working on a project. Because you can only fit so much information on a single sheet of paper, most cheat sheets are a simple listing of syntax rules. This set of cheat sheets aims to remind you of syntax rules, but also remind you of important concepts as well. You can click here and download all of the original sheets in a single document.

A more recently updated version of these sheets (April 2021) is available through Leanpub. The updated version includes a sheet that focuses on Git basics, a printer-friendly b&w version of each sheet, and each sheet as a separate document. There is an option to download the fully updated set at no cost.

If you’d like to know when more resources become available, you can sign up for email notifications here.

Overview Sheet

• Beginner’s Python Cheat Sheet
  • Provides an overview of the basics of Python including variables, lists, dictionaries, functions, classes, and more.

Python Basics

• Beginner’s Python Cheat Sheet - Lists
  • Focuses on lists: how to build and modify a list, access elements from a list, and loop through the values in a list. Also covers numerical lists, list comprehensions, tuples, and more.
• Beginner’s Python Cheat Sheet - Dictionaries
  • Focuses on dictionaries: how to build and modify a dictionary, access the information in a dictionary, and loop through dictionaries in a variety of ways. Includes sections on nesting lists and dictionaries, using dictionary comprehensions, and more.
• Beginner’s Python Cheat Sheet - If Statements and While Loops
  • Focuses on if statements and while loops: how to write conditional tests with strings and numerical data, how to write simple and complex if statements, and how to accept user input. Also covers a variety of approaches to using while loops.
• Beginner’s Python Cheat Sheet - Functions
  • Focuses on functions: how to define a function and how to pass information to a function. Covers positional and keyword arguments, return values, passing lists, using modules, and more
• Beginner’s Python Cheat Sheet - Classes
  • Focuses on classes: how to define and use a class. Covers attributes and methods, inheritance and importing, and more.
• Beginner’s Python Cheat Sheet - Files and Exceptions
  • Focuses on working with files, and using exceptions to handle errors that might arise as your programs run. Covers reading and writing to files, try-except-else blocks, and storing data using the json module.
• Beginner’s Python Cheat Sheet - Testing Your Code
  • Focuses on unit tests and test cases. How to test a function, and how to test a class.

Project-Focused Sheets

• Beginner’s Python Cheat Sheet - Pygame
  • Focuses on creating games with Pygame. Creating a game window, rect objects, images, responding to keyboard and mouse input, groups, detecting collisions between game elements, and rendering text
• Beginner’s Python Cheat Sheet - Matplotlib
  • Focuses on creating visualizations with Matplotlib. Making line graphs and scatter plots, customizing plots, making multiple plots, and working with time-based data.
• Beginner’s Python Cheat Sheet - Plotly
  • Focuses on creating visualizations with Plotly. Making line graphs, scatter plots, and bar graphs, styling plots, making multiple plots, and working with geographical datasets.
• Beginner’s Python Cheat Sheet - Django
  • Focuses on creating web apps with Django. Installing Django and starting a project, working with models, building a home page, using templates, using data, and making user accounts.

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Getting Started

Stepping

Python Basics Cheat Sheet

Breakpoints

Printing

Easy Python Code Cheat Sheet