Displaying text on OLED in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to initialize the OLED display.

Raspberry Pi

import Adafruit_SSD1306

# Create display instance
[1] = Adafruit_SSD1306.SSD1306_128_64(rst=None)

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Adisplay

Bdevice

Cscreen

Doled

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name unrelated to the display like 'device' or 'screen'.

Forgetting to assign the display instance to a variable.

The variable oled is commonly used to represent the OLED display instance.

2fill in blank

medium

Complete the code to clear the OLED display before writing text.

Raspberry Pi

oled.[1]()

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Aclear

Bbegin

Creset

Dshow

Attempts:

3 left

💡 Hint

Common Mistakes

Using show() instead of clear().

Using begin() which initializes but does not clear.

The clear() method clears the display buffer so the screen is blank before drawing new content.

3fill in blank

hard

Fix the error in the code to display text on the OLED.

Raspberry Pi

from PIL import Image, ImageDraw, ImageFont

image = Image.new('1', (oled.width, oled.height))
draw = ImageDraw.Draw(image)
draw.text((0, 0), 'Hello, OLED!', font=[1], fill=255)

oled.image(image)
oled.show()

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AImageFont.load()

BImageFont.default()

CImageFont.load_default()

DImageFont.font_default()

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect method names like default() or font_default().

Forgetting the parentheses after the method.

The correct method to load the default font is ImageFont.load_default().

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps words to their lengths if length is greater than 3.

Raspberry Pi

words = ['apple', 'bat', 'carrot', 'dog']
lengths = {word: [1] for word in words if [2]

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Alen(word)

Blen(word) > 3

Clen(word) < 3

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word itself as the value instead of its length.

Using the wrong comparison operator in the condition.

The dictionary maps each word to its length using len(word) and filters words with length greater than 3 using len(word) > 3.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps uppercase keys to values greater than 10.

Raspberry Pi

data = {'a': 5, 'b': 15, 'c': 20}
result = {{ [1]: [2] for k, v in data.items() if v [3] 10 }}

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Ak.upper()

Bv

C>

Dk

Attempts:

3 left

💡 Hint

Common Mistakes

Using the original key instead of uppercase.

Using the wrong comparison operator like '<'.

The dictionary comprehension uses k.upper() as keys, v as values, and filters values greater than 10 with >.