python 3 simple calculator , need assistance understanding subject and completing task, new to python and coding in general : <p>I need help programming a simple python 3 calculator, I am completely new to coding and python so my knowledge on this is low and i'm having a tough time just getting started. </p>

<p>heres the problem: Your assignment is to create an extremely simple calculator in Python. So simple, it can only add positive whole numbers.</p>

<p>Take a look at the hello.py example posted this week. It shows examples of reading data using the input() method. It shows how to write functions (using 'def'), as well as passing parameters and returning a value. It also shows how to interpolate variables into a string using the printf-style string formatting.</p>

<p>First create, a simple function called "add". It should take in two values and return the sum of the values.</p>

<p>Next create an interactive script which uses the "add" function. The output, when done, should look like this:</p>

<p>What is the first number?
3
What is the second number?
5
Your sum is 8.</p>

<p>In the example above, the bold items are typed by the user. Note that, to pass the online test, you must format your text exactly the same as above.</p>

<p>When done (and tested locally), test and submit online at CSGrading.com Assignment 2. </p>

<p>HELLO.PY CODE</p>

<pre><code>def get_firstname():
    print("First Name: ")
    firstname = input()
    return firstname

def get_lastname():
    print("Last Name: ")
    lastname = input()
    return lastname

def say_hello(f,l):
    print("Hello %s %s" % (f,l))

say_hello(get_firstname(),get_lastname())
</code></pre>

<p>I really wanna learn this but ultimately i'm stuck.</p>
