How do I remove duplicates from a list in Python while maintaining the order of elements?
How do I remove duplicates from a list in Python while maintaining the order of elements?
How do I remove duplicates from a list in Python while maintaining the order of elements?
solveurit24@gmail.com Changed status to publish February 13, 2025
One common way to remove duplicates while preserving order is to use a dictionary, where the keys are the elements of the list. Here’s how you can do it:
def remove_duplicates(lst):
# Create a dictionary where each element is a key (this removes duplicates)
# Since dictionaries preserve insertion order in Python 3.7+, the order remains the same.
return list(dict.fromkeys(lst))
# Example usage:
my_list = [1, 2, 2, 3, 4, 4, 4]
result = remove_duplicates(my_list)
print(result) # Output: [1, 2, 3, 4]Explanation:
dict.fromkeys(lst)creates a dictionary with the elements oflstas keys, automatically removing duplicates.- Converting the dictionary back to a list preserves the order of first occurrences.
solveurit24@gmail.com Changed status to publish February 13, 2025