Question

Can someone help me with the problem below?

Parentheses Matching Program:

Implement and test a Python program that determines if parentheses in an entered line of code form matching pairs. Note: pairs of parentheses may be nested

Answer 1

str1=input("please enter a set of paranthesis\n")#asks user to enter sting of ( )

count=0#intitalize count and count1 to 0

count1=0

for i in range(len(str1)):#loop runs from till len(str1)

    if i==0:#if the first character in str1 is ) then it is not a proper matching of paranthesis

        if str1[i]==')':

            print("No matching pairs found")# so display this message

            break# break the loop

        else:

            count=count+1#else it must be '(' then increment count

    else:

        if str1[i]=='(':#if i!=0 then check for character if it is '(' then increment count

            count=count+1

        else:

            count1=count1+1#else increment count1

if(count!=0 and count1!=0):#f count and count1 is not eqaul to zero

    if(count1==count):#if count==count1

        print("Matching pairs found")#print matching

    else:

        print("Not a matching pair")#else not mathing

else:

    print("you have not entered any string")