[mypy] fix type annotations for project euler problem008/sol2

pikulet · pikulet · commit 63100dec5913 · 2021-09-09T17:12:18.000+08:00
diff --git a/project_euler/problem_008/sol2.py b/project_euler/problem_008/sol2.py
@@ -70,7 +70,9 @@ def solution(n: str = N) -> int:
     """
 
     return max(
-        reduce(lambda x, y: int(x) * int(y), n[i : i + 13]) for i in range(len(n) - 12)
+        # mypy cannot properly interpret reduce
+        int(reduce(lambda x, y: str(int(x) * int(y)), n[i : i + 13]))
+        for i in range(len(n) - 12)
     )
 
 

Original file line number	Diff line number	Diff line change
`@@ -70,7 +70,9 @@ def solution(n: str = N) -> int:`
`70`	`70`	`"""`
`71`	`71`
`72`	`72`	`return max(`
`73`		`- reduce(lambda x, y: int(x) * int(y), n[i : i + 13]) for i in range(len(n) - 12)`
	`73`	`+ # mypy cannot properly interpret reduce`
	`74`	`+ int(reduce(lambda x, y: str(int(x) * int(y)), n[i : i + 13]))`
	`75`	`+ for i in range(len(n) - 12)`
`74`	`76`	`)`
`75`	`77`
`76`	`78`