class Solution:
def isValid(self , s: str) -> bool:
# write code here
while s:
l = len(s)
s = s.replace('()','').replace('[]','').replace('{}','')
if l == len(s):
break
return True if len(s)<1 else False
def isValid(self , s: str) -> bool:
# write code here
while s:
l = len(s)
s = s.replace('()','').replace('[]','').replace('{}','')
if l == len(s):
break
return True if len(s)<1 else False