Python List count() Method

In Python, the list count() method is used to return the number of times an element appears in the list. If the element is not present in the list, it returns 0.

Syntax of the count() Method in Python List

The following is the syntax of the list count() method:

Parameters

• x: element to be counted.

Return

• It returns number of times x occurred in the list.

Examples of Python List count() Method

Let's see some examples of the count() method to understand it's working.

Example 1: Finding the Occurrence of an Element in a List

In this example, we will understand the use of the count() method to find the total occurrence of an element in the given list.

Output:

Given List: ['apple', 'banana', 'banana', 'mango', 'orange', 'banana', 'melon']
Count of 'banana' = 3  

Explanation:

In this example, we are given a list consisting of some elements. We used the count() method to count the occurrence of a specific element in the list. Since element 'banana' is occurred 3 times in the list, the count() method returned 3.

Example 2: Counting an Element Not Present in the List

If the passed value is not present in the list, the count() method returns 0.

Here is an example:

Output:

Given List: ['apple', 'banana', 'banana', 'mango', 'orange', 'banana', 'melon']
Count of 'kiwi' = 0  

Explanation:

In this example, we are given a list consisting of some elements. We used the count() method to count the occurrence of a specific element in the list. Since element 'kiwi' is not a part of the list, the count() method returned 0.

Example 3: Checking If an Element in the List is Duplicate

The count() method can be used to check if any duplicate elements are present in the list. Here is an example:

Output:

Given List: ['apple', 'banana', 'banana', 'mango', 'orange', 'banana', 'melon']
The value 'banana' is duplicate.
Count of 'banana' = 3  

Explanation:

Here, we are given a list consisting of some elements. We used the count() method to count the occurrence of a specific element in the list. We then checked if the returned number is higher or equal to 2 for duplicate elements.

Since, the banana is present in the list for 3 times, the message "The value 'banana' is duplicate" is printed.

Conclusion

The List count() method in Python is a useful tool frequently used by developers to return the number of times an element appears in the list. It is helpful to find the duplicate values and validate the list data. The count() method is case-sensitive and returns 0 if the value is not found. The developers use this method to search for exact matches and to manage the list data.