problem:python data structure-(Balanced parenthesis)..how can i fix my bug...? pls help me anyone..

Question

def arePairs(open,close):
if open=='[' and close==']':
return True
if open=='{' and close=='}':
return True
if open=='(' and close==')':
return True
return False
def Balanced(A):
stack=[]
for i in range(len(A)):
if A[i]=='[' or A[i]=='{' or A[i]=='(':
stack.append(A[i])
elif A[i] == ']' or A[i] == '}' or A[i] == ')':
if arePairs(stack[-1],A[i] or len(stack)!=0):
stack.pop()
else:
return False
if len(stack)==0:
return True
else:
return False
A=input()
print(Balanced(A))

please anyone fix my bug???

Answer 1

You only need to do it for parenthesis. You can remove all the code for square brackets '[' ']' and curly braces '{' '}'.