Battery failsafe in Drone Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if the battery level is below the critical threshold.

Drone Programming

if battery_level [1] critical_threshold:
    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 failsafe to trigger incorrectly.

Using '==' only triggers when battery level equals threshold, missing lower levels.

The battery failsafe triggers when the battery level is less than the critical threshold, so the correct operator is <.

2fill in blank

medium

Complete the code to reduce drone speed when battery is low.

Drone Programming

if battery_level [1] warning_threshold:
    speed = reduced_speed

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

A<=

B!=

C==

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' causes speed reduction when battery is high.

Using '!=' triggers speed change incorrectly.

The drone should reduce speed when battery level is less than or equal to the warning threshold.

3fill in blank

hard

Fix the error in the failsafe activation condition.

Drone Programming

if battery_level [1] critical_threshold and not is_charging:
    activate_failsafe()

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

A<

B>

C>=

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' triggers failsafe when battery is sufficient.

Using '>' or '>=' misses low battery cases.

The failsafe activates when battery_level is less than critical_threshold and the drone is not charging.

4fill in blank

hard

Fill both blanks to create a dictionary of battery status for each drone.

Drone Programming

battery_status = {drone_id: [1] for drone_id in drone_list if battery_levels[drone_id] [2] warning_threshold}

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

Abattery_levels[drone_id]

B>

C<=

Ddrone_id

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' instead of '<=' includes drones with high battery.

Using 'drone_id' as value stores only IDs, not battery levels.

The dictionary maps each drone_id to its battery level if the battery level is less than or equal to the warning threshold.

5fill in blank

hard

Fill all three blanks to create a failsafe report dictionary with drone ID, battery level, and status.

Drone Programming

failsafe_report = [1]: [2] for [3] in drones if drones[[3]]['battery'] < critical_threshold

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

Adrone_id

Bbattery_level

C<

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong variable name in the loop.

Using incorrect comparison operator.

The dictionary comprehension creates a report with drone_id as key and battery_level as value for drones with battery less than critical_threshold.