[Solved] What will be the output of this code snippet when run on a Raspberry Pi with a camera connected?... What will be the output of this code snippet when run on a Raspberry Pi with a camera connected? | Raspberry Pi

Raspberry Pi - Camera Module

What will be the output of this code snippet when run on a Raspberry Pi with a camera connected?

from picamera import PiCamera
from time import sleep
camera = PiCamera()
camera.start_preview()
sleep(2)
camera.capture('/home/pi/image.jpg')
camera.stop_preview()

AThe program throws an error because sleep is too short

BThe camera preview shows for 2 seconds, then saves image.jpg

CNo image is saved because stop_preview() is called too early

DThe preview never starts because start_preview() is missing

Step-by-Step Solution

Solution:

Step 1: Analyze the preview and sleep timing
The preview starts, then the program waits 2 seconds allowing the camera to adjust.
Step 2: Capture and save the image after preview
After waiting, the image is captured and saved to '/home/pi/image.jpg', then preview stops.
Final Answer:
The camera preview shows for 2 seconds, then saves image.jpg -> Option B
Quick Check:
Preview + sleep + capture = A [OK]

Quick Trick: Preview then sleep before capture ensures good image [OK]

Common Mistakes:

MISTAKES

Assuming sleep is too short causes error
Thinking stop_preview() prevents saving
Believing start_preview() is missing

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More Raspberry Pi Quizzes

What will be the output of this code snippet when run on a Raspberry Pi with a camera connected?

Step 1: Analyze the preview and sleep timing

Step 2: Capture and save the image after preview

Final Answer:

Quick Check:

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