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Remove tuples having duplicate first value from given list of tuples in Python
When it is required to remove tuples that have a duplicate first value from a given set of list of tuples, a simple 'for' loop, and the 'add' and 'append' methods can be used.
Below is a demonstration for the same −
Example
my_input = [(45.324, 'Hi Jane, how are you'),(34252.85832, 'Hope you are good'),(45.324, 'You are the best.')]
visited_data = set()
my_output_list = []
for a, b in my_input:
if not a in visited_data:
visited_data.add(a)
my_output_list.append((a, b))
print("The list of tuple is : ")
print(my_input)
print("The list of tuple after removing duplicates is :")
print(my_output_list)Output
The list of tuple is : [(45.324, 'Hi Jane, how are you'), (34252.85832, 'Hope you are good'), (45.324, 'You are the best.')] The list of tuple after removing duplicates is : [(45.324, 'Hi Jane, how are you'), (34252.85832, 'Hope you are good')]
Explanation
- A list of tuple is defined, and is displayed on the console.
- An empty set is created, as well as an empty list.
- The list of tuple is iterated over, and if it is not present in the 'set', it is added to the set, as well as to the list.
- This is the output that is displayed on the console.
Updated on: 13-Mar-2021
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