How Can I Join Two Lists in Python?

Joining two lists in Python is a common operation when working with data structures, as it allows you to merge different sets of information highly efficiently. Python offers other approaches to combine lists, such as list comprehension and extending lists. The easiest approach is the ‘+‘ operator as it stands out for its simplicity and … Read more

Python Container Types: A Quick Guide

If you’re working with Python, most of the data structures you’ll think about are container types. ๐Ÿš‚๐Ÿšƒ๐Ÿšƒ๐Ÿšƒ These containers are special data structures that hold and manage collections of elements. Python’s most commonly used built-in container types include tuples, lists, dictionaries, sets, and frozensets ๐Ÿ“ฆ. These containers make it easy for you to store, manage … Read more

How to Add Elements to a Python Set

Problem Formulation and Solution Overview This article will show you how to add elements to a Python set. โ„น๏ธ Info: A Python set is a collection of unique item(s) saved in no particular order (unordered). A set cannot be changed. However, elements can be added and removed. Sets can also perform calculations like union, intersection, … Read more

How to Count the Number of Unique Values in a List in Python?

Problem Statement:ย Consider that you have been given a list in Python. How will you count the number of unique values in the list? Example: Let’s visualize the problem with the help of an example: Given:ย li = [‘a’, ‘a’, ‘b’, ‘c’, ‘b’, ‘d’, ‘d’, ‘a’]Output:ย The unique values in the given list are ‘a’, ‘b’, ‘c’, ‘d’. … Read more

Python Print Dictionary Without One or Multiple Key(s)

The most Pythonic way to print a dictionary except for one or multiple keys is to filter it using dictionary comprehension and pass the filtered dictionary into the print() function. There are multiple ways to accomplish this and I’ll show you the best ones in this tutorial. Let’s get started! ๐Ÿš€ ๐Ÿ‘‰ Recommended Tutorial: How … Read more

How to Find the Shortest String in a Python Set?

Use Python’s built-in min() function with the key argument to find the shortest string in a set. Call min(my_set, key=len) to return the shortest string in the set using the built-in len() function to determine the weight of each stringโ€”the shortest string has minimum length. ๐Ÿ‘‰ Recommended Tutorial: How to Find the Shortest String in … Read more

How to Check if a Python Set is Empty?

There are three main ways to check if a set is empty: Implicit: Pass the set into a Boolean context without modification. Python will automatically convert it to a Boolean using bool(). Explicit: Pass the set into the bool() Function. Comparison: Compare the set with the empty set like so: my_set == set() Let’s dive … Read more

How to Fix TypeError: unhashable type: ‘list’

The TypeError: unhashable type: ‘list’ usually occurs when you try to use a list object as a set element or dictionary key and Python internally passes the unhashable list into the hash() function. But as lists are mutable objects, they do not have a fixed hash value. The easiest way to fix this error is … Read more