Write a program to ask the user to enter a password. Then check to see if it is a valid password based on these requirements: must be at least 8 characters long, must contain both uppercase and lowercase letters, must contain at least one number between 0-9, must contain a special character -!,@,#,$.

Explanation:

def validatePassword(password):

   specialChars = "[email protected]$#"

   digits = "0123456789"

   hasDigit=False

   hasSpecialCharacter=False

   hasLowerCase = False

   hasUperCase=False

   for c in password:

       if c in digits:

           hasDigit=True

       if c in specialChars:

           hasSpecialCharacter=True

       if c.islower():

           hasLowerCase=True

       if c.isupper():

           hasUperCase=True

   if hasUperCase and hasLowerCase and hasSpecialCharacter and hasDigit:

       print(password,end='')

       print("--------- valid password")

   else:

       print(password,end='')

       print("--------- invalid password")

password = input("Enter Password: ")

validatePassword(password)