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  1. Prepare
  2. Python
  3. Sets
  4. Set .discard(), .remove() & .pop()
  5. Discussions

Set .discard(), .remove() & .pop()

  • anw_g01
     + 0 comments

    I believe sets do maintain insertion order from Python 3.7 so using .pop() will remove the 9 which returns an error with .remove(9) straight afterwards. This challenge might be a bit outdated?

    n = int(input())
s = set(map(int, input().split()))
N = int(input())
for _ in range(N):
    command = input()
    if command == "pop":
        s.pop()
        continue
    word, value = command.split()
    if word == "remove":
        s.remove(int(value))
    elif word == "discard":
        s.discard(int(value))
print(sum(s))