Sets in Python

A guide to knowing more about set data type in python!

Sets (Source)

Sets are unordered collections of unique elements. This means that there can only be one representative of the same object.

Sets

>>> set1 = set()
>>> set1
set()

Add values in the set

>>> set1.add(11)
>>> set1
{11}

It might look like a dictionary because of the curly braces but it’s not because there are no key-value pairs.

>>> set1.add(22)
>>> set1
{11, 22}
>>> set1.add(22)
>>> set1
{11, 22}

Even after adding the number ‘22’ again, it cannot be seen in the set because sets do not accept repeated objects and accept only unique values.

Typecasting

When we have a list with repeated values, it can be typecast to a set to get only the unique ones.

>>> list1 = [11,11,22,33,44,44,44,44,55]
>>> set(list1)
{11, 22, 33, 44, 55}

Refer to the notebook here.

Beginner-level books to refer to learn Python:

Python Crash Course, 2nd Edition: A Hands-On, Project-Based Introduction to Programming

Learn Python the Hard Way: A Very Simple Introduction to the Terrifyingly Beautiful World of…

Think Python, 2e: How to Think Like a Computer Scientist

Advance-level books to refer to learn Python:

Programming Python: Powerful Object-Oriented Programming

Advanced Python Programming: Build high performance, concurrent, and multi-threaded apps with…

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