3 from collections import Counter
5 from typing import Iterable, List, Optional, Set
8 class grab_bag(object):
9 def __init__(self) -> None:
10 self.contents: Set[str] = set()
12 def clear(self) -> None:
15 def add(self, item: str) -> None:
16 if item not in self.contents:
17 self.contents.add(item)
19 def add_all(self, collection: Iterable[str]) -> None:
23 def subset(self, count: int) -> Optional[List[str]]:
24 if len(self.contents) < count:
26 return random.sample(self.contents, count)
28 def size(self) -> int:
29 return len(self.contents)
33 # x.add_all(["oneA", "two", "three", "oneB", "four", "five", "oneC", "oneD"])