XRP: Variables & Functions

When do you want to use a variable?

• to hold a value

• to change values

• never

• to create a function

Create a variable names velocity and set it to be 0

(a)  

When would you use a while True loop?

Why make functions?

• easy to repeat code

• easier to read

• helps with variables

• let's you use if statements

What are the parts of a function?

a

b

c

defining the function

calling the function

parameters

Finish creating this function:

(a)   go_robot(velocity, time):

Finish the code.

def run_robot(velocity, time):

drivetrain.set_speed(______, ______)

sleep(time)

(a)  

You've created this function:

def run_robot(velocity, time):

drivetrain.set_speed(velocity, velocity)

sleep(time)

You want your robot to move for 20 secs. at a speed of 20 cm/s. Write the code to do that using the function

How would you make a function heading?

You want to create a function that tells a robot to go a certain distance and speed. What would be the parameters (the things in parenthesis)?

• speed

• distance

• time

• drivetrain