Question: Provide a Python program to determine whether a password exactly meets the following requirements for a secure password:

the length of the password must be greater than some minimum length and less than some maximum. You should decide on the minimum (at least 6) and maximum (at least 15) allowable lengths;
it must not include any spaces;
it must contain at least one digit; and
it must contain at least one alphabetic character.
Your program must contain at least three functions:

one function to check that the password is the proper length;
a second function to check whether it contains the required number of characters/digits (Hint: to determine whether it contains at least one digit and one alphabetic character, use a loop and the isalpha or isdigit methods); and
a third function to verify that it does not contain the prohibited character (space).
Your program should prompt the user for the candidate password and then each function and display either that the password is valid or the first reason it is invalid.

You cannot use Regular Expressions (RE) !

Your program should include Header comments (what the program does) and in-line comments (the major design steps).
Completeness of your Test plan/report (at least three (probably more) test cases). You should have a test case for each invalid and one for a valid password. Include screenshots for each test case.