Advertisements

Advertisements

Check if Any element in List is in another list in Python

April 30, 2023 / List, Python / By

This tutorial will discuss about a unique way to check if any element in list is in another list in Python.

Suppose we have two lists,

list1 = [11, 22, 33, 44, 55]
list2 = [67, 78, 44, 34, 19, 27]

We want to check if any element from the first list list1 is present in the second list list2 or not.

For this, we will create two set objects i.e. first set from the first list and second set from the second list. Then we can call the intersection() method on the first set object and pass the second set as an argument in this method. It will return a new set containing the elements which are present in both the sets i.e. the elements which are present in both the lists list1 & list2.

If the new Set is empty, then it means both the lists has no common element. Where, if Set is non empty, then it means it contains the values from list1 which are pesent in list2.

Let’s see the complete example,

# First List of numbers
list1 = [11, 22, 33, 44, 55]

# Second List of numbers
list2 = [67, 78, 44, 34, 19, 27]

# Check if two lists have any common element
if set(list1).intersection(set(list2)):
    print("Yes, At least one element from list1 is present in list2")
else:
    print("No element from list1 is present in list2")

Output

Frequently Asked:

Yes, At least one element from list1 is present in list2

Summary

We learned how to check if any element in list is in another list in Python.

Python List Methods

List MethodDescription
append(x)Add an item to the end of the list.
extend(iterable)Extend the list by appending all the items from the iterable.
insert(i, x)Insert an item at a given position i.
remove(x)Remove the first item from the list whose value is x.
pop([i])Remove the item at the given position in the list and return it.
index(x[, start[, end]])Return the first index at which a value occurs.
count(x)Return the number of times x appears in the list.
sort([key[, reverse]])Sort the items of the list in place.
reverse()Reverse the elements of the list in place.
clear()Remove all items from the list.
copy()Return a shallow copy of the list.

Related posts:

  1. Python : How to Check if an item exists in list ? | Search by Value or Condition
  2. Python : Check if all elements in a List are same or matches a condition
  3. Python : Check if a list contains all the elements of another list
  4. Python: Check if a List is empty
  5. Check if all elements in a list are None in Python
  6. Python: check if two lists are equal or not ( covers both Ordered & Unordered lists)
  7. Check if all values in List are False in Python
  8. Check if all elements in a list are integers in Python
  9. Check if all values are True in a List in Python
  10. Check if all elements in a List are zero in Python
  11. Check if all elements of a list match a condition in Python
  12. Check if all values in Python List are greater than a value
  13. Check if any elements in list match a condition in Python
  14. Check if any value in Python List is greater than a value
  15. Check if all elements in List are unique in Python
  16. Check if all elements of List are equal in Python
  17. Check if List contains a substring in Python
  18. Check if a number exists in a list in Python
  19. Check if all elements in a List are unique in Python
  20. Check if all elements in List are False in Python

Leave a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Scroll to Top