Functions

Question 1

To begin grouping related code, we start defining a function with the keyword…

Answer 1

def

Question 2

How do you build the beginning of a function?

Answer 2

def
then the function’s name in snake case
Followed by parentheses
Then :

def greet_user():

Question 3

How do we call a function?

Answer 3

We call a function by coding it’s name followed by parentheses like greet_user()

Question 4

How do we start grouping related code?

Answer 4

by adding the def keyword

Question 5

How do we name a function?

Answer 5

Using snake case

Question 6

What does the colon : do?

Answer 6

They mark the beginning of a function’s code block

Question 7

Where does the code we want to group together go?

Answer 7

After the function definition, indented by two spaces

Question 8

How do we run the code inside a function?

Answer 8

By calling it with it’s name and ()

Question 9

How do we pass a value to a function?

Answer 9

By adding a variable called a parameter inside the parentheses of the function.

def greet(name)
In this example, name is the variable called a parameter.

Question 10

Why do we pass specific values to functions?

Answer 10

So we can use the same code for different values

Question 11

Where do parameters go?

Answer 11

Parameters go inside the parentheses of the function we’re creating

Question 12

What does a parameter do?

Answer 12

It is a variable that passes a value to a function

Question 13

How do we pass a value to the function’s parameter?

Answer 13

We call the function with the value between parentheses.

Question 14

To return something from a function we add what keyword?

Answer 14

Return

Question 15

What types of values can functions return?

Answer 15

Any type like string, integer, float or boolean.

Question 16

How do we return a value from a function?

Answer 16

By adding the return keyword followed by the value to return.

Question 17

What sign allows us to add multiple parameters?

Answer 17

Commas
,

Question 18

How many parameters can a function have?

Answer 18

As many as we’d like

Question 19

When calling a function, how do we pass values to the function when it has multiple parameters?

Answer 19

In the order that the parameters are placed in the function definition.

Question 20

Why is it important to give functions descriptive names?

Answer 20

To know at a glance what the functions does

Question 21

What do function names usually start with?

Answer 21

Verbs (action words)

Question 22

What are examples of verbs used to name functions?

Answer 22

Create
Compute
Calculate
Get

Question 23

What are some special case verbs that are used for boolean functions?

Answer 23

Is
Has
Can

Question 24

What does keeping the same function naming mean?

Answer 24

Using the same verb for functions that perform similar tasks

Question 25

When does a variable have a local scope?

Answer 25

When we create it inside of a function's block

Question 26

What does it mean for a variable to have a local scope?

Answer 26

We can't access or update it outside of the function where it was created

Question 27

What happens when we try to access a local scope variable outside of the function that created it?

Answer 27

We get an error

Question 28

Which variables have a global scope?

Answer 28

Variables created outside of a function's block

Question 29

From where can we access a variable with a global scope?

Answer 29

From anywhere in the code

Question 30

What kind of scope do variables created inside conditionals and loops have?

Answer 30

Local scope

Question 31

When can we first access a variable, regardless of scope?

Answer 31

Only after we create it

Question 32

What does nesting a conditional inside a function mean?

Answer 32

Indenting the conditional so that it's part of the function's code block

Question 33

What happens when we use a function's parameter as part of the condition?

Answer 33

Our code can make a decision based on different input values.