Guess Number Higher or Lower LeetCode solution in Python

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class Solution:
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    def guessNumber(self, n: int) -> int:
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        l = 1
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        h = n
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        while l <= h:
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            mid = (l + h) // 2
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            x = guess(mid)
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            if x == 0:
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                return mid
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            elif x == 1:
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                l = mid + 1
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            else:
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                h = mid - 1