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# Balanced Parentheses-How do you think I could write this code better?

##Balanced Parentheses ## ##Parentheses are balanced, if all opening parentheses have their corresponding closing parentheses. ## ##Given an expression as input, we need to find out whether the parentheses are balanced or not. ##For example, "(x+y)*(z-2*(6))" is balanced, while "7-(3(2*9))4) (1" is not balanced. ## ##The problem can be solved using a stack. ## ##Push each opening parenthesis to the stack and pop the last inserted opening parenthesis ##whenever a closing parenthesis is encountered. ## ##If the closing bracket does not correspond to the opening bracket, then stop and ##say that the brackets are not balanced. ## ##Also, after checking all the parentheses, we need to check the stack to be empty ##-- if it's not empty, then the parentheses are not balanced. ## ##Implement the balanced() function to return True if the parentheses in the given expression are balanced, ##and False if not. def balanced(expression): while "(" not in expression or ")" not in expression: print("Please enter a in parentheses expression : ", end="") expression = input() lst = [] for i in expression: if i == "(" or i == ")": lst.insert(0, i) if lst[-1] == ")": return False lst = [] for i in expression: if i == "(": lst.insert(0, i) try: if i == ")": lst.pop(0) except IndexError: return False if len(lst) == 0 : return True else: return False print(balanced(input("Please enter a in parentheses expression : ")))