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Create Solution.py

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	`1`	`+class Solution:`
	`2`	`+ def letterCombinations(self, digits: str) -> List[str]:`
	`3`	`+ map = {'2':"abc", '3':"def", '4':"ghi", '5':"jkl", '6':"mno", '7': "pqrs",`
	`4`	`+ '8':"tuv", '9':"wxyz"}`
	`5`	`+ result = [''] if digits else []`
	`6`	`+ for d in digits:`
	`7`	`+ result = [p + q for p in result for q in map[d]]`
	`8`	`+ return result`

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