Testing failsafe scenarios in Drone Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the drone battery is low.

Drone Programming

if battery_level [1] 20:
    initiate_landing()

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

A>

B<

C>=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<' causes the drone to land when battery is high.

The drone should initiate landing when the battery level is less than 20%.

2fill in blank

medium

Complete the code to retry connection if signal strength is weak.

Drone Programming

if signal_strength [1] 30:
    retry_connection()

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

A>=

B<=

C<

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' causes retry even when signal is strong.

The drone retries connection when signal strength is less than 30.

3fill in blank

hard

Fix the error in the failsafe check for obstacle distance.

Drone Programming

if obstacle_distance [1] 5:
    stop_movement()

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

A<

B>

C==

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' causes the drone to stop when obstacle is far away.

The drone should stop movement if obstacle distance is less than 5 meters.

4fill in blank

hard

Fill both blanks to create a failsafe that checks battery and signal before takeoff.

Drone Programming

if battery_level [1] 50 and signal_strength [2] 40:
    start_takeoff()

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

A>=

B<

C>

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' for battery_level causes takeoff with low battery.

The drone starts takeoff only if battery is at least 50 and signal strength is greater than 40.

5fill in blank

hard

Fill all three blanks to create a failsafe dictionary filtering sensors with safe readings.

Drone Programming

safe_sensors = {sensor: reading for sensor, reading in sensors.items() if reading [1] [2] and reading [3] 100}

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

A>=

B0

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '>=' excludes zero readings.

This dictionary comprehension keeps sensors with readings between 0 and 100 inclusive.