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)