In this article, we are going to learn Way toRemove duplicates tuple in list of tuples Python. We will learn different techniques to do the clean-up by removing duplicate items.
1. List comprehension to Remove duplicates tuple in list of tuples Python
Let us start with our example where we have a list of tuples that contain duplicate items. We will use set() function to remove the duplicates and make a list of unique items.The set only contain unique elements so by converting a list to set we can remove duplicate
Python Progrm Example
list_of_tuples = [("C#", 1), ("C#", 1), ("C++", 3),("C++", 3), ("Python", 25), ("Rust", 30)]
#removing duplicate from list of tuples
unique_list_of_tuples = list(set([item for item in list_of_tuples]))
print('list of tuple after removing duplicate=\n', unique_list_of_tuples)
Output
list of tuple after removing duplicate =
[('Python', 25), ('Rust', 30), ('C#', 1), ('C++', 3)]
2. tuple() and List compreshension to Remove duplicates tuple in list of tuples
In this example using list comprehension along with for loop and set to remove duplicate from list of tuples in Python.
Python Program to remove duplicate from list of tuples
list_of_tuples= [("C#", 1), ("C#", 1), ("C++", 3),("C++", 3), ("Python", 25), ("Rust", 30)]
result_lst = [tup for tup in (set(tuple(item) for item in list_of_tuples ))]
print(result_lst)
Output:
list of tuple after removing duplicate=
(('Rust', 30), ('C++', 3), ('C#', 1), ('Python', 25))
3. OrderedDict() function to Remove duplicates tuple in list of tuples
In this example, we will use OrderedDict() function from Python the collections module. We are using items() to get the list of tuples after removing duplicates. Let understand with examples
Python Program to find duplicate list of tuples
from collections import OrderedDict
list_of_tuples= [("C#", 1), ("C#", 1), ("C++", 3),
("C++", 3), ("Python", 25), ("Rust", 30)]
print("original list of tuple:\n",list_of_tuples )
# OrderedDict to remove duplicate
unique_list = OrderedDict(list_of_tuples).items()
print("\n after removing duplicate \n", unique_list)
Output:
original list of tuple:
[('C#', 1), ('C#', 1), ('C++', 3), ('C++', 3), ('Python', 25), ('Rust', 30)]
after removing duplicate
odict_items([('C#', 1), ('C++', 3), ('Python', 25), ('Rust', 30)])
4. Enumerate() method to Remove duplicates tuple in list of tuples Python duplicate
In this example we are using enumerate() method to get unique list of tuples after removing duplicate tuple from it.
Python Program Example
# Python3 program to remove duplicate tuples from list of tuples
list_of_tuples= [("C#", 1), ("C#", 1), ("C++", 3),("C++", 3), ("Python", 25), ("Rust", 30)]
result_lst = [[x, y] for item, [x, y] in enumerate(list_of_tuples)
if not any(z == y for _, z in list_of_tuples[:item])]
print(result_lst)
Output
[('C#', 1), ('C++', 3), ('Python', 25), ('Rust', 30)]
Conclusion
We have understood Way toRemove duplicates tuple in list of tuples Python tuples in Python with code examples that includes list comprehension,enumerate() method and orderdict().