Learn1-4

This is an integer

• 5

• 5.0

• "5"

• "5.0"

A program is a set of commands that run...

• in order, bottom to top

• in random order

• in order, top to bottom

• in alphabetical order

Quotation marks " " and parenthesis ( )

• sometimes come in pairs

• always come in pairs

• never come in pairs

• should not be used

This is a float

• 5

• 5.0

• "5"

• "5.0"

Why do we use the wait command in a program?

• To prevent lines of code from being skipped

• To annoy the user

• So the effects of the code/actions are more visible

• To pause the program between actions

Identify the variable in the following code snippet:
frankie = codesters.Sprite("ufo")

• frankie

• codesters

• Sprite

• ufo

What does this code snippet do?
sprite = codesters.Sprite("Person2")

sprite = codesters.Sprite("Person4")

sprite.move_up(100)

• Person2 moves up 100 pixels

• No action happens

• Person4 moves up 100 pixels

• Person2 and Person 4 move up 100 pixels

How can we use dot notation?

• We can use it to draw dots on the screen

• We can use it before a command to give the command to a specific sprite

• We can use it to assign the same command to multiple sprites at once

• We can use it to change toe variable names of sprites

Should we use 3 variable names for 3 different sprites?

• Yes, so we can control each sprite individually

• No, it will cause a syntax error

• Yes, we will get a syntax error if we don't

• No, it will cause a logic error

What happens in this program?
jane = codesters.Sprite("person2")

mike = codesters.Sprite("person4")

mike.move_up(100)

jane.turn_right(360)
mike.move_down(100)

jane.flip_up_down()

• mike jumps up and down, then jane spins and flips

• mike jumps up, jane spins, mike jumps down, jane flips

• jane jumps up and down, then mike spins and flips

• jane jumps up, mike spins, jane jumps down, mike flips