checking integer overflow in python

Question

class Solution(object):
    def reverse(self, x):
        \"\"\"
        :type x: int
        :rtype: int
        \"\"\"
        negative = False
        if(x < 0):
          


        

Answer 1

if sum > ((1 << 31) - 1):
    return 0
else:
    if negative == True:
      sum = -sum
      return sum