Python – Test if Tuple contains K

Sometimes, while working with Python, we can have a problem in which we have a record and we need to check if it contains K. This kind of problem is common in data preprocessing steps. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using any() + map() + lambda
Combination of above functions can be used to perform this task. In this, we check for any element using any() and extension of logic is done by map() and lambda.

# Python3 code to demonstrate working of
# Test if Tuple contains K
# using any() + map() + lambda

# initialize tuple
test_tup = (10, 4, 5, 6, 8)

# printing original tuple
print("The original tuple : " + str(test_tup))

# initialize K
K = 6

# Test if Tuple contains K
# using any() + map() + lambda
res = any(map(lambda ele: ele is K, test_tup))

# printing result
print("Does tuple contain any K value ? : " + str(res))

Output :

The original tuple : (10, 4, 5, 6, 8)
Does tuple contain any K value ? : True

Method #2 : Using loop
This task can be performed using loop as well using brute force constructs. We just iterate through the tuple and when we encounter K, we set flag to True and break.

# Python3 code to demonstrate working of
# Test if Tuple contains K
# Using loop

# initialize tuple
test_tup = (10, 4, 5, 6, 8)

# printing original tuple
print("The original tuple : " + str(test_tup))

# initialize K
K = 6

# Test if Tuple contains K
# Using loop
res = False
for ele in test_tup:
    if ele == K:
        res = True
        break

# printing result
print("Does tuple contain any K value ? : " + str(res))

Output :

The original tuple : (10, 4, 5, 6, 8)
Does tuple contain any K value ? : True