Skip to content
Related Articles

Related Articles

Python – Filter tuple with all same elements
  • Last Updated : 02 Sep, 2020

Given List of tuples, filter tuples which have same values.

Input : test_list = [(5, 6, 5, 5), (6, 6, 6), (9, 10)]
Output : [(6, 6, 6)]
Explanation : 1 tuple with same elements.

Input : test_list = [(5, 6, 5, 5), (6, 5, 6), (9, 10)]
Output : []
Explanation : No tuple with same elements.

Method #1 : Using list comprehension + set() + len()

In this, we check for length of set converted tuple to be 1, if that checks out, tuple is added to result, else, omitted.



Python3




# Python3 code to demonstrate working of 
# Filter similar elements Tuples
# Using list comprehension + set() + len()
  
# initializing list
test_list = [(5, 6, 5, 5), (6, 6, 6), (1, 1), (9, 10)]
  
# printing original list
print("The original list is : " + str(test_list))
  
# length is computed using len()
res = [sub for sub in test_list if len(set(sub)) == 1]
          
# printing results
print("Filtered Tuples : " + str(res))
Output
The original list is : [(5, 6, 5, 5), (6, 6, 6), (1, 1), (9, 10)]
Filtered Tuples : [(6, 6, 6), (1, 1)]

Method #2 : Using filter() + lamdba + set() + len()

In this, we perform task of filtering using filter(), and single element logic is checked in lambda function using set() and len().

Python3




# Python3 code to demonstrate working of 
# Filter similar elements Tuples
# Using filter() + lamdba + set() + len()
  
# initializing list
test_list = [(5, 6, 5, 5), (6, 6, 6), (1, 1), (9, 10)]
  
# printing original list
print("The original list is : " + str(test_list))
  
# end result converted to list object 
# filter extracts req. tuples
res = list(filter(lambda sub : len(set(sub)) == 1, test_list))
          
# printing results
print("Filtered Tuples : " + str(res))
Output
The original list is : [(5, 6, 5, 5), (6, 6, 6), (1, 1), (9, 10)]
Filtered Tuples : [(6, 6, 6), (1, 1)]

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up
Recommended Articles
Page :