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.
- Python Cheat Sheet Github
- Beginners Python Cheat Sheet - Github
- Basic Python Cheat Sheet
- Python Cheat Sheet Pdf
Python Cheat Sheet Github
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.
Github python cheat sheet This is the resource for the first edition; updated resources for the second edition are here. I would like to know what you think about the Python Crash Course. #Load the xls file'e Sheet as a dataframe, skipping the first row: df = xlsfile.parse('Final QC Results',skiprows=1) #Load the xls file'e Sheet as a dataframe, declaring a column as the index: df =. Python cheat sheet. GitHub Gist: instantly share code, notes, and snippets. 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. Available from No Starch Press and Amazon. Welcome to Python Cheatsheet!¶ Welcome to pysheeet. This project aims at collecting useful Python snippets in order to enhance pythoneers’ coding experiences. Please feel free to contribute if you have any awesome ideas for improvements to code snippets, explanations, etc. Any snippets are welcome.
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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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Twitter: @ehmatthes
Python cheat sheet - data structures¶¶
A set of reference materials to help you in those occassional bouts of forgetfulness.
Table of contents
- Data structures
- Lists
- Dictionaries
- Tuples
- Sets
- Loops
- Comprehensions
Play area¶¶
Get a feel for Python in Jupyter notebooks. Type commands, press Shift + Enter to run the cells and get the outputs below each cell
Python tutorials and references¶¶
Following are some resources to learn Python
- Article with reviews about various tutorials http://noeticforce.com/best-free-tutorials-to-learn-python-pdfs-ebooks-online-interactive
- user voted list of tutorials on quora: https://www.quora.com/What-is-the-best-online-resource-to-learn-Python
- Google’s Python class https://developers.google.com/edu/python/
- Python reference documentation https://docs.python.org/3/
- A list of Python libraries for various applications: https://github.com/vinta/awesome-python
mutability of lists¶¶
list elements are mutable and can be changed
dict exploration¶¶
what happens when you inquire a key thats not present
set from dictionary¶¶
Works on dicts too. But will return a set of keys only, not values.
Note. When you create a dict with duplicate keys, Python just keeps the last occurrence of the kvp. It thinks the kvp needs to be updated to the latest value
Beginners Python Cheat Sheet - Github
Comprehensions¶¶
Basic Python Cheat Sheet
Comprehensions are an effective way to loop through sequences
List comprehension¶¶
Dictionary comprehension¶¶
Same as list comprehension, but instead of lists, it returns a dictionary. You use {} instead of []
Python Cheat Sheet Pdf
reverse keys and values? - works only when values are immutable types. hence filter them out