Time-lapse photography in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the library needed to control the Raspberry Pi camera.

Raspberry Pi

import [1]

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

Aos

Btime

Csys

Dpicamera

Attempts:

3 left

💡 Hint

Common Mistakes

Importing the wrong library like 'time' or 'os' instead of 'picamera'.

The picamera library is used to control the Raspberry Pi camera module.

2fill in blank

medium

Complete the code to pause the program for 5 seconds between shots.

Raspberry Pi

time.[1](5)

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

Asleep

Bwait

Cpause

Ddelay

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'wait' or 'pause' which are not valid functions in the time module.

The sleep function pauses the program for the given number of seconds.

3fill in blank

hard

Fix the error in the code to capture an image with the camera.

Raspberry Pi

camera.capture('[1]')

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

Acamera.jpg

Bcapture()

Cimage.jpg

Dpic.jpg()

Attempts:

3 left

💡 Hint

Common Mistakes

Adding parentheses to the filename or using invalid filenames.

The capture method requires a filename string to save the image.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that stores image filenames with their capture order.

Raspberry Pi

images = {f'image[1].jpg': [2] for i in range(1, 6)}

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

Ai

Ci+1

Di*2

Attempts:

3 left

💡 Hint

Common Mistakes

Using expressions like 'i+1' or 'i*2' which do not match the numbering.

The filename uses the loop variable i to number images, and the value is also i to represent the order.

5fill in blank

hard

Fill all three blanks to create a loop that captures 3 images with a 2-second delay between each.

Raspberry Pi

for [1] in range(1, 4):
    camera.capture(f'image[2].jpg')
    time.[3](2)

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

Ai

Csleep

Dwait

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'wait' instead of 'sleep' or wrong variable names.

The loop variable i is used to number images, and sleep pauses the program.