CODE EXAMPLE FOR PYTHON

valid parentheses with python

def isValid(self, s: str) -> bool:
    stack = []
    close_to_open = {")":"(",
                    "}":"{",
                    "]":"["}
    for i in s:
        if i in close_to_open:
            if stack and stack[-1] == close_to_open[i]:
                stack.pop()
            else:
                return False
        else:
            stack.append(i)
    return True if not stack else False