Balanced Parentheses solution question

Question

I'm solving the final challenge in Python Data Structures. They ask for stack solution. But I can't seem to figure out why this solution wouldn't work. Why doesn't the following code solve the balanced parentheses?

def balanced(expression):
#your code goes here
a = expression.count("(")
b = expression.count(")")
if "(" in expression and ")" in expression:
if a == b and expression.find("(") < expression.find(")"):
return True
else:
return False
else:
return "False"

print(balanced(input()))

Answer 1

Try this:

(()))(

Answer 2

Oh, I see... It is a problem... Thank you, Brian!

Answer 3

You're welcome!