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Python | Check if two list of tuples are identical
  • Last Updated : 11 Nov, 2019
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Sometimes, while working with tuples, we can have a problem in which we have list of tuples and we need to test if they are exactly identical. This is a very basic problem and can occur in any domain. Let’s discuss certain ways in which this task can be done.

Method #1 : Using == operator
This is the simplest and elegant way to perform this task. It also checks for equality of tuple indices with one other.




# Python3 code to demonstrate working of
# Check if two list of tuples are identical
# using == operator
  
# initialize list of tuples 
test_list1 = [(10, 4), (2, 5)]
test_list2 = [(10, 4), (2, 5)]
  
# printing original tuples lists
print("The original list 1 : " + str(test_list1))
print("The original list 2 : " + str(test_list2))
  
# Check if two list of tuples are identical
# using == operator
res = test_list1 == test_list2
  
# printing result
print("Are tuple lists identical ? : " + str(res))
Output :
The original list 1 : [(10, 4), (2, 5)]
The original list 2 : [(10, 4), (2, 5)]
Are tuple lists identical ? : True

 

Method #2 : Using cmp()
This inbuilt function, computes the difference of values of tuples. If they are computed out to be 0, then it means that tuples are identical. Works only with Python2.






# Python code to demonstrate working of
# Check if two list of tuples are identical
# using cmp()
  
# initialize list of tuples 
test_list1 = [(10, 4), (2, 5)]
test_list2 = [(10, 4), (2, 5)]
  
# printing original tuples lists
print("The original list 1 : " + str(test_list1))
print("The original list 2 : " + str(test_list2))
  
# Check if two list of tuples are identical
# using cmp()
res = not cmp(test_list1, test_list2)
  
# printing result
print("Are tuple lists identical ? : " + str(res))
Output :
The original list 1 : [(10, 4), (2, 5)]
The original list 2 : [(10, 4), (2, 5)]
Are tuple lists identical ? : True

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