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Remove duplicates from a list in Python

 3 years ago
source link: https://dev.to/foxy4096/remove-duplicates-from-a-list-in-python-3oj5
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Remove duplicates from a list in Python

I am going straight to the point

my_list = [1, 2, 3, 4, 4, 5, 2]
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How do we remove duplicate no. or elements from the list.

Simple, we have 3 easy method.

  1. Using set 
my_list = [1, 2, 3, 4, 4, 5, 2]
updated_list = list(set(my_list))
print(updated_list)

#The output will be: [1, 2, 3, 4, 5]
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As we know that set doesn't support duplicate, we can simply use this method to remove duplicates. Here I have type casted the list into a set and then again type casted in to list.

  1. Using dict 
my_list = [1, 2, 3 , 4, 4, 5, 2]
updated_list = list(dict.fromkeys(my_list))
print(mylist)

#The output will be: [1, 2, 3, 4, 5]
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Well dict also doesn't support duplicates so when we convert the list to dict, so we are creating dict from the list and then converting it back to list.

  1. I don't know what to call this method 
my_list = [1, 2, 3 , 4, 4, 5, 2]
updated_list = []
for item in my_list:
    if item not in list:
        updated_list.append(item)
my_list = updated_list
print(my_list)

#The output will be: [1, 2, 3, 4, 5]
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So that was 3 ways to remove duplicates from a list.
I you got some more methods write down in the comment box below, I would love to see them, until then bey bye and

Peace ✌


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