# Test if Tuple contains K in Python

PythonServer Side ProgrammingProgramming

If it is required to check if a tuple contains a specific value 'K', it can be done using the 'any' method, the 'map' method and the lambda function.

Anonymous function is a function which is defined without a name. In general, functions in Python are defined using 'def' keyword, but anonymous function is defined with the help of 'lambda' keyword. It takes a single expression, but can take any number of arguments. It uses the expression and returns the result of it.

The map function applies a given function/operation to every item in an iterable (such as list, tuple). It returns a list as the result.

The 'any' method checks if any of the elements in the iterable are True, and if that's the case, returns Ture, else returns False.

Below is a demonstration of the same −

## Example

Live Demo

my_tuple = ( 67, 45, 34, 56, 99, 123, 10, 56)

print ("The tuple is : " )
print(my_tuple)
K = 67
print("The value of 'K' has been initialized")

my_result = any(map(lambda elem: elem is K, my_tuple))

print("Does tuple contain the K value ?" )
print(my_result)

## Output

The tuple is :
(67, 45, 34, 56, 99, 123, 10, 56)
The value of 'K' has been initialized
Does tuple contain the K value ?
True

## Explanation

• A tuple is defined, and is displayed on the console.
• The value of 'K' is also initialized.
• The list comprehension is used to iterate through the tuple using the lambda function.
• This operation is mapped to all elements in the tuple.
• This result is checked for, using the 'any' method.
• This operation is assigned a variable.
• This variable is the output that is displayed on the console.
Published on 11-Mar-2021 09:23:57