8. String to Integer (atoi)

main.py

class Solution(object):
    def myAtoi(self, s):
        """
        :type s: str
        :rtype: int
        """
        splitted = s.split(' ')
        for i in splitted:
            if not i:
                continue
            else:
                r = re.findall(r"^[-+]?[0-9]+", i)
                print(r)
                if not r:
                    return 0
                else:
                    number = r[0]
                    if number[0].isdigit():
                        number = int(number)
                    else:
                        number = -1 * int(number[1:]) if number[0] == '-' else int(number[1:])
                    if number < -1 * (2 ** 31):
                        number = -1 * (2 ** 31)
                    elif number > (2 ** 31) - 1:
                        number = (2 ** 31) - 1
                    return number
        return 0