Why displays provide visual feedback in Raspberry Pi - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print a message on the display.

Raspberry Pi

print([1])

Drag options to blanks, or click blank then click option'

Aprint

BHello, World!

C"Hello, World!"

Ddisplay

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the quotes around the text.

Trying to print a variable that is not defined.

The print function needs a string inside quotes to show text on the display.

2fill in blank

medium

Complete the code to clear the display before showing new text.

Raspberry Pi

display.[1]()

Drag options to blanks, or click blank then click option'

Aclear

Bshow

Cprint

Dupdate

Attempts:

3 left

💡 Hint

Common Mistakes

Using show() instead of clear().

Trying to print without clearing old text.

The clear() method removes old content from the display so new text can be shown clearly.

3fill in blank

hard

Fix the error in the code to update the display with new text.

Raspberry Pi

display.[1]("New message")

Drag options to blanks, or click blank then click option'

Ashow

Bprint

Cclear

Dupdate

Attempts:

3 left

💡 Hint

Common Mistakes

Using print() which does not update the display hardware.

Using clear() which erases content instead of showing it.

The update() method refreshes the display to show the new message after setting it.

4fill in blank

hard

Fill both blanks to create a dictionary showing word lengths only for words longer than 3 letters.

Raspberry Pi

lengths = {word: [1] for word in words if len(word) [2] 3}

Drag options to blanks, or click blank then click option'

Alen(word)

B<

C>

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using word instead of len(word) for the value.

Using < instead of > in the condition.

The dictionary comprehension uses len(word) to get length and filters words with length greater than 3 using >.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase keys and values greater than zero.

Raspberry Pi

result = { [1]: [2] for k, v in data.items() if v [3] 0 }

Drag options to blanks, or click blank then click option'

Ak.upper()

Bv

C>

Dk

Attempts:

3 left

💡 Hint

Common Mistakes

Using k instead of k.upper() for keys.

Using < or == instead of > in the condition.

The keys are converted to uppercase with k.upper(), values are v, and only values greater than zero are included using >.