Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open brackets must be closed in the correct order. Every close bracket has a corresponding open bracket of the same type. Example 1: Input: s = "()" Output: true Example 2: Input: s = "()[]{}" Output: true Example 3: Input: s = "(]" Output: false Constraints: 1 <= s.length <= 10^4 s consists of parentheses only '()[]{}'.

`s = "()" def checkValid(s): open = ["(", "[", "{"] close = [")", "]", "}"] for i in open: if i in s: return True for j in close: if j in s: return False checkValid(s)`