Open links in new tab
  1. 123

    Sets in Python are unordered collections of unique elements. They are defined using curly braces {} or the set() function.

    Example

    # Creating a set
    my_set = {"apple", "banana", "cherry"}
    print(my_set) # Output: {'apple', 'banana', 'cherry'}

    # Using set() function
    another_set = set(["apple", "banana", "cherry"])
    print(another_set) # Output: {'apple', 'banana', 'cherry'}
    Copied!

    Key Characteristics

    1. Unordered: The items in a set do not have a defined order.

    2. Unique Elements: Sets do not allow duplicate values.

    3. Mutable: You can add or remove items from a set, but the elements themselves must be immutable.

    Common Operations

    Adding Elements

    my_set.add("orange")
    print(my_set) # Output: {'apple', 'banana', 'cherry', 'orange'}
    Copied!

    Removing Elements

    my_set.remove("banana")
    print(my_set) # Output: {'apple', 'cherry', 'orange'}
    Copied!

    Set Operations

    • Union: Combines elements from both sets.

    set1 = {"a", "b", "c"}
    set2 = {"c", "d", "e"}
    union_set = set1 | set2 # or set1.union(set2)
    print(union_set) # Output: {'a', 'b', 'c', 'd', 'e'}
    Copied!
    How do I access datasets in Python?
    In one or two lines of code the datasets can be accessed in a python script in form of a pandas DataFrame. This is particularly useful for quick experimenting with machine-learning algorithms and visualizations. Download this post as a Jupyter notebook There are many providers of free datasets for data science.
    sergiykolesnikov.github.io
    LearnPython.com
    https://learnpython.com/blog/python-datasets
    7 Datasets to Practice Data Analysis in Python - LearnPython.com
  1. Python
    https://docs.python.org › tutorial › datastructures.html

    5. Data Structures — Python 3.14.2 documentation

    1 day ago · Python also includes a data type for sets. A set is an unordered collection with no duplicate elements. Basic uses include membership testing and eliminating duplicate entries. Set objects also …

    See results only from docs.python.org
  2. LearnPython.com
    https://learnpython.com › blog › python-datasets

    7 Datasets to Practice Data Analysis in Python - LearnPython.com

      • Diabetes dataset. The Diabetes dataset from scikit-learn is a collection of 442 patient medical …
      • Forest Cover Types. The Forest covertype dataset, also from scikit-learn, is a collection of data …
      • Yahoo Finance. Python’s yfinance library is a powerful tool for downloading financial data from the …
      • Atmospheric Soundings. Atmospheric sounding data is data collected from weather balloons. A …
      • IMDB movie review. The IMDB Movie Review dataset is a collection of movie reviews from the …
      See full list on learnpython.com
  3. coderivers.org
    https://coderivers.org › blog › data-set-python

    Mastering Data Sets in Python: A Comprehensive Guide

    Apr 9, 2025 · This blog post will delve into the fundamental concepts of data sets in Python, explore various usage methods, discuss common practices, and share best practices to help you make the …

  5. Dataquest
    https://www.dataquest.io › blog › free

    32 Best Free Datasets for Projects (2026) – Dataquest

      1. FiveThirtyEight. FiveThirtyEight is an incredibly popular interactive news and sports site started by …
      2. BuzzFeed. BuzzFeed started as a purveyor of low-quality articles, but has since evolved and now …
      3. NASA. NASA is a publicly-funded government organization, and thus all of its data is public. It …
      4. AWS Public Data sets. Amazon makes large datasets available on its Amazon Web Services …
      5. Google Public Data sets. Much like Amazon, Google also has a cloud-hosting service, called Google …
      See full list on dataquest.io
  6. 365 Data Science
    https://365datascience.com › tutorials › python...

    Best Free Public Datasets to Use in Python - 365 Data …

    Feb 1, 2023 · In this article, we’ve prepared a list of free datasets to download and practice on as you make your way into data science. Not only are they publicly available, but the assorted samples are also all Python-compatible, making them …

  7. SuperDataScience
    https://www.superdatascience.com › python

    Python Programming A-Z: Download Practice Datasets

    Get free sample data sets to practice Python. Download and explore these datasets at your own pace. Become a Python expert.

  8. People also ask
    Feedback
  9. Python in Plain English
    https://python.plainenglish.io

    Stop Coding Blindly. These 10 Datasets Will Level Up …

    May 19, 2025 · Here are ten useful and interesting datasets to explore, along with some ideas on how you can use them. 1. Titanic Passenger Data. This well-known dataset contains information about passengers on the Titanic — like their age, …

  10. sergiykolesnikov.github.io
    https://sergiykolesnikov.github.io › Datasets_in_Python

    Datasets in Python – Sergiy Kolesnikov – Data Engineer

    In this post, I give an overview of “built-in” datasets that are provided by popular python data science packages, such as statsmodels, scikit-learn, and seaborn. These datasets can be easily accessed in …

  11. Towards Dev
    https://towardsdev.com › python-and-data-science-the...

    Python and Data Science — The Need for Datasets

    Mar 5, 2025 · New developers and researchers need high-quality datasets when they want to delve into machine learning, statistical analysis, and visualization code. When writing articles, I often need a dataset to showcase the code’s output…and …

  12. FreeCodecamp
    https://www.freecodecamp.org › news › learn-python-for...

    Learn Python for Data Science – Full Course for Beginners

    May 29, 2025 · Pandas helps you work with tables of data (think spreadsheets, but in Python), and NumPy is great for doing math on that data. You’ll get to apply what you're learning right away with hands-on projects. The first one shows you how to …