Project 4: Password Checker

•         Learning Objective: Using Python Methods and Functions 

Problem Description: 

Some Websites impose certain rules for passwords, involving use of certain numbers and special characters.

Write a Python program that prompts the user to enter a password and displays "valid password" if the rule is follows rules of the company, or "invalid password" otherwise.

Write a method or a function for implementing the password checking rules for the method/function 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.                 

Sample 1

Enter a string for password: wewew43x

valid password

Sample 2

Enter a string for password: 343a

invalid password