Leetcode 7. Reverse Integer

class Solution:
    def reverse(self, x: int) -> int:
        x=str(x)
        if x[0]=='-': 
            x=int(x[::-1][:-1])*-1
            if x<=-1*pow(2,31): x=0
        else: 
            x=int(x[::-1])
            if x>=pow(2,31)-1 : x=0
        return x

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