How to Check if Elements are Part of a List in Python?

To check if elements are part of a list in Python, you can use the in operator. Here’s an example:

my_list = [1, 2, 3, 4, 5]

if 3 in my_list:
    print("3 is in the list")
else:
    print("3 is not in the list")

if 6 in my_list:
    print("6 is in the list")
else:
    print("6 is not in the list")

In this example, we have a list called my_list containing integers. We use the in operator to check if certain elements are present in the list.

In the first if statement, we check if 3 is in my_list. Since 3 is present in the list, the condition 3 in my_list evaluates to True, and we print “3 is in the list”.

In the second if statement, we check if 6 is in my_list. Since 6 is not present in the list, the condition 6 in my_list evaluates to False, and we print “6 is not in the list”.

The in operator returns True if the element is found in the list and False otherwise. You can use this operator to check the presence of multiple elements as well by chaining multiple in operations or using it in a loop to iterate over a collection of elements.