How to use Lambda and in keyword In Python
Define a list with integers. Define a lambda function such that it takes array and value as arguments and check if value is present in array using in keyword
lambda v: True if v in l else False
If the lambda return True then print the Element is present else print element is NOT present.
Python3
arr = [ 1 , 2 , 3 , 4 ] v = 8 x = lambda arr,v: True if v in arr else False if (x(arr,v)): print ( "Element is Present in the list" ) else : print ( "Element is Not Present in the list" ) |
Output:
Element is Not Present in the list
Explanation: The arr and v are passed to the lambda function and it checks if the value is present in an array using IN keyword and here v = 8 and it is NOT Present in the array and returns false so prints the element Is NOT 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.