###### tags: `leetcode`

# 819. Most Common Word

class Solution:
    def mostCommonWord(self, paragraph: str, banned: List[str]) -> str:
        banset = set(banned)
        for c in "!?',;.":
            paragraph = paragraph.replace(c, " ")
        print(paragraph)
        count = collections.Counter(
            word for word in paragraph.lower().split())
        print(count)
        ans, best = '', 0
        for word in count:
            if count[word] > best and word not in banset:
                ans, best = word, count[word]

        return ans