Remove problem

Question

How to remove more than one item or different items at one time?
For example:
nums=[1,2,3,3,3,4,5,4]
Can I remove all 3 or 2 and 4 in one line?
And how to remove the second 4?

Answer 1

# if you are looking for a one liner try
nums=[1,2,3,3,3,4,5,4]
# filter out all duplicates from a list
print(list(set(nums)))
# or if you just want it as a set just go
print(set(nums))
# remove specific numbers from a list
# an example of removing all 3's and 4's
print([x for x in nums if x not in [3,4]])
# or to alter by index position use slicing notation
# remove the last position from the list
print(nums[:-1])

Answer 2

you have to iterate the list and remove the nodes you don't need with a condition, you can use a while or you can do it with a recursive method. Hope it helps :)

Answer 3

@Ladislav Milunovic
What do you mean??

Answer 4

@Luciano Pumeda Ale
Could you write me an example?
Thank you so much: )

Answer 5

That way you just fill your [set()] list, you have to add the condition to erase the numbers you don't want

Answer 6

mySet = set()
for e in nums:
mySet.add(e)

Answer 7

I mean to create set. It is type that doesn't accept duplicates. if you have a list just iterate it and add items to set. or make set imideatelly if you dont want duplicates