Python - Remove Tuples of Length K

Last Updated : 3 Nov, 2025

Given list of tuples, remove all the tuples with length K. For Example:

Input : [(4, 5), (4, ), (8, 6, 7), (1, ), (2, 3), (3, 4, 6, 7)], K = 2 
Output : [(4, ), (8, 6, 7), (1, ), (3, 4, 6, 7)] 
Explanation: tuple (4, 5) and (2, 3) has length 2, so they are removed.

Let's explore different methods to remove tuples of length K in python.

Using list comprehension

List comprehension provides a concise way to filter tuples based on their length.

Python 
t1 = [(4, 5), (4, ), (8, 6, 7), (1, ), (3, 4, 6, 7)]
K = 1
res = [ele for ele in t1 if len(ele) != K]
print(str(res))

Output
[(4, 5), (8, 6, 7), (3, 4, 6, 7)]

Explanation: [ele for ele in t1 if len(ele) != K] creates a new list containing only the tuples whose length is not equal to K.

Using filter() + lambda + len() 

This method removes tuples of a specific length using a lambda condition inside filter(). The len() function checks each tuple’s size, and lambda defines the condition to keep only those whose length isn’t equal to K.

Python 
t1 = [(4, 5), (4, ), (8, 6, 7), (1, ), (3, 4, 6, 7)]
K = 1
res = list(filter(lambda x : len(x) != K, t1))
print(str(res))

Output
[(4, 5), (8, 6, 7), (3, 4, 6, 7)]

Explanation: filter(lambda x: len(x) != K, t1): applies a filter function that keeps only the tuples whose length is not equal to K.

Using a loop

This method iterates through each tuple and adds it to a new list only if its length is not equal to K.

Python 
t1 = [(4, 5), (4,), (8, 6, 7), (1,), (3, 4, 6, 7)]
K = 1
res = []
for t in t1:
    if len(t) != K:
        res.append(t)
print(res)

Output
[(4, 5), (8, 6, 7), (3, 4, 6, 7)]

Explanation: Iterates through each tuple and appends it to res only if its length is not equal to K.

Using map() and lambda function

This approach combines filter() to exclude tuples of a given length and map() to return the remaining ones. The lambda function defines the condition based on tuple length using len().

Python 
t1 = [(4, 5), (4, ), (8, 6, 7), (1, ), (3, 4, 6, 7)]
k = 1
n1 = list(map(lambda x: x, filter(lambda x: len(x) != k, t1)))
print(n1)

Output
[(4, 5), (8, 6, 7), (3, 4, 6, 7)]

Explanation: list(map(lambda x: x, filter(lambda x: len(x) != k, t1))): filters t1 to keep only tuples whose length is not k and returns them as a list.

Comment

Explore