Question

Some Web sites impose certain rules for passwords. Write a function that checkswhether a string is a valid password. Suppose the password rules are as follows:A password must have at least eight characters.A password must consist of only letters and digits.A password must contain at least two digits.Write a program that prompts the user to enter a password and displays validpassword if the rules are followed or invalid password otherwise.

Answer 1

Answer:

def check_password(pwd):

   c=0

   d=0

   for i in pwd:

       if (i>='a' and i<='z') or (i>='A' and i<='Z'):

           c+=1

       elif i>='0' and i<='9':

           d+=1

           c+=1

   if len(pwd)==c and d>=2 and len(pwd)>=8:

       print("valid password")

   else:

       print("Invalid password")

 

ps=input("Enter password for checking : ")

check_password(ps)

Explanation:

• Loop through the password and check if it contains any alphabet.
• Increment the counter if it contains any alphabet.
• If it contains a number, increment both c and d variables.
• Finally display the relevant message.