def isValid(self, s: str) -> bool:
        brackets = {
            "}": "{",
            ")": "(",
            "]": "[",
        }
        control = []
        if not s:
            return True
        size = len(s)
        if size % 2:
            return False
        for b in s:
            if b in "({[":
                control.append(b)
            if b in ")]}":
                try:
                    if control[-1] == brackets[b]:
                        control.pop()
                    else:
                        return False
                except IndexError:
                    return False
        if len(control) == 0:
            return True
        return False