How to use Lambda and Count() method In Python
Define a list with integers. Define a lambda function such that it takes array and value as arguments and return the count of value in list.
lambda v:l.count(v)
If the count is zero then print the Element is not present else print element is NOT present.
Python3
arr = [ 1 , 2 , 3 , 4 ] v = 3 def x(arr, v): return arr.count(v) if (x(arr, v)): print ( "Element is Present in the list" ) else : print ( "Element is Not Present in the list" ) |
Output:
Element is Present in the list
Explanation: The arr and v are passed to the lambda function and it evaluates the count of v in the arr and here v = 3 and it is present 1 time in the array and the if condition is satisfied and prints the element Is present in the list.
Python – Lambda Function to Check if value is in a List
Given a list, the task is to write a Python program to check if the value exists in the list or not using the lambda function.
Example:
Input : L = [1, 2, 3, 4, 5] element = 4 Output : Element is Present in the list Input : L = [1, 2, 3, 4, 5] element = 8 Output : Element is NOT Present in the list
We can achieve the above functionality using the following two methods.