Accepted Python3: One-Liner using Counter from collections
\nfrom collections import Counter as c\n\nclass Solution:\n    def uncommonFromSentences(self, A: str, B: str) -> List[str]:\n        return [k for k, v in c(A.
```\nfrom collections import Counter as c\n\nclass Solution:\n    def uncommonFromSentences(self, A: str, B: str) -> List[str]:\n        return [k for k, v in c(A.split() + B.split()).items() if v == 1]\n```
['Python', 'Python3']