In the first chapter, we have accomplished the following:

1) Learned what Python is;

2) Understood what a program is;

3) Found out how does Python read the code;

4) Wrote our first line of code;

5) Created a few simple programs;

6) Finally, we learned and applied the print function.

1. A computer program is a:

1) Set of instructions and rules for a computer, written in a programming language.

2) Piece of code written on a computer.

3) Downloadable game.

2. How do we let a computer know that it needs to display a message on the screen?

1) With a magic word.

2) Using the print function)

3) Using the command "Display message!"

3. In what order does a computer process (read) the code?

1) When we run the code, the computer reads that code line by line. Top-down.

2) When we run the code, the computer reads that code from bottom to top.

3) When we run the code, the computer doesn't read anything; it remembers everything by heart.

4. Arrange the parts of the code so that the program displays the message "I love Python!"

)

(

"I love Python!"

print

A variable is a simple data structure that has a name and a value. Now, let's figure out what is what.

Imagine a folder on your desktop. In this case, the folder is a variable. The folder has the label "film."; This is the name of the variable. The folder contains a video called "The."; This is the value of the variable.

Here is how this variable looks in Python language:

Let's break it down.

1) First, we give a name to our variable – film

2) Second, we put equal sign =

3) Third, we give a value to our variable "Super Cat."

A value in a variable always goes with quotes, like in our example. Otherwise, a variable will not work.

Now, as we know what a variable is and what it contains, let's make one!

Write our variable from the example above to the console:

film = "Super Cat"

And run the code. Nothing? That's right. There is no message to show on the screen as we did not use the print function. We will combine variables with print function in the following chapters. But, for now, hit the >_REPL button.

You should now see the input field that looks like this:

Input the name of our variable, which is the film, and hit enter.

In response to the variable name, the program returns its value, which in our case is "Super Cat."

Now, as you've created your first variable, experiment with it. Change name and value. See what happens.

We've just learned how to create a variable. Now let's learn how to output its value.

Do you remember the print function we used earlier? Let's combine it with our variable and see what happens. Write this code in the console and hit run:

film = "Super Cat"

print(film)

Let's break it down:

1) First, we declared a variable and gave it a name – film.

2) Then we assigned a value to the variable – Super Cat.

3) Then, on a second line, we wrote a print function.

And finally, we passed the variable name to the print function, putting it in the function brackets.

Every time we create a variable and pass its name to the print function, it will output the variable's value, just like in our example.

Now you know how programmers display variables in Python. It doesn't seem too tricky. Let's have some practice. Below is the code that is missing some elements. You have to fix it so the program could create a variable and display its value.