Check for Duplicates in Python List

Introduction

In Python, a list is a collection of items that are ordered and changeable. Sometimes, we need to check if a list has any duplicate elements. In this challenge, you will write a Python function to check if a list has any duplicates.

Skills Graph

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Check for Duplicates in List Function

Write a Python function called has_duplicates(lst) that takes a list as an argument and returns True if the list has any duplicate elements, otherwise returns False.

To solve this problem, you can follow these steps:

Convert the list to a set to remove duplicates.

Compare the length of the set with the length of the original list.

If the lengths are equal, then the list has no duplicates, otherwise it has duplicates.

def all_unique(lst): return len(lst) == len(set(lst))

x = [1, 2, 3, 4, 5, 6] y = [1, 2, 2, 3, 4, 5] all_unique(x) ## True all_unique(y) ## False

Check for Duplicates in List Function

Introduction

Skills Graph

Check for Duplicates in List Function

Summary

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