Delivery drone concept in Drone Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the drone's speed to 10 meters per second.

Drone Programming

drone.speed = [1]

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

A'fast'

Bspeed

Cdrone.speed

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string like 'fast' instead of a number.

Using the variable name instead of a value.

The drone's speed should be set to the number 10 to represent 10 meters per second.

2fill in blank

medium

Complete the code to make the drone fly to the coordinates (50, 100).

Drone Programming

drone.fly_to([1], 100)

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

A100

B50

Cy

Dx

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names instead of numbers.

Swapping the coordinates.

The drone needs to fly to x-coordinate 50 and y-coordinate 100. The first argument is 50.

3fill in blank

hard

Fix the error in the code to check if the drone's battery is above 20%.

Drone Programming

if drone.battery [1] 20:

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

A>

B<

C==

D=

Attempts:

3 left

💡 Hint

Common Mistakes

Using assignment operator '=' instead of comparison.

Using less than '<' instead of greater than.

To check if the battery is above 20%, use the greater than symbol >.

4fill in blank

hard

Fill both blanks to create a dictionary of package weights for delivery.

Drone Programming

package_weights = { [1]: 5, [2]: 3 }

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

A'package1'

B'weight1'

C'package2'

D'weight2'

Attempts:

3 left

💡 Hint

Common Mistakes

Using weight names as keys instead of package names.

Forgetting quotes around string keys.

The dictionary keys should be package names like 'package1' and 'package2'.

5fill in blank

hard

Fill all three blanks to create a dictionary of deliveries with package names, weights, and a condition for heavy packages.

Drone Programming

deliveries = { [1]: [2] for [3] in packages if packages[[3]] > 4 }

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

A'package'

Bweight

Cpackage

Dpkg

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same name for key and loop variable.

Using strings instead of variable names.

The dictionary comprehension uses 'package' as key, 'weight' as value, and 'pkg' as the loop variable.

Practice

1. What is the main purpose of a delivery drone in programming terms?

easy

A. To carry packages from one place to another automatically

B. To play music while flying

C. To take photos of landscapes

D. To clean the air by flying

Solution

1. Step 1: Understand the drone's role

   A delivery drone is designed to transport packages safely and efficiently.

2. Step 2: Match the purpose to options

   Only To carry packages from one place to another automatically describes carrying packages automatically, which fits delivery.

3. Final Answer:

   To carry packages from one place to another automatically -> Option A

4. Quick Check:

   Delivery drone = carry packages [OK]

Hint: Delivery drones move packages, not play or clean [OK]

Common Mistakes:

• Confusing drone delivery with photography
• Thinking drones clean air
• Assuming drones play music

2. Which of the following is the correct way to set a package in a drone program?

easy

A. drone.package = 'Box'

B. drone->setPackage('Box')

C. setPackage(drone, 'Box')

D. drone.setPackage('Box')

Solution

1. Step 1: Identify method call syntax

   In drone programming, methods are called on objects using dot notation like drone.setPackage('Box').

2. Step 2: Check each option

   drone.setPackage('Box') uses correct method call syntax. drone.package = 'Box' assigns directly, which may not be allowed. setPackage(drone, 'Box') uses wrong function call style. drone->setPackage('Box') uses incorrect arrow syntax.

3. Final Answer:

   drone.setPackage('Box') -> Option D

4. Quick Check:

   Method call uses dot notation [OK]

Hint: Use dot notation for methods like setPackage() [OK]

Common Mistakes:

• Using assignment instead of method call
• Using arrow (->) instead of dot (.)
• Calling method with wrong argument order

3. What will be the output of this drone program snippet?

drone.setPackage('Book')
drone.setDestination('Home')
print(drone.status())

Assuming status() returns a string showing package and destination.

medium

A. "Package: Book, Destination: None"

B. "Package: Book, Destination: Home"

C. "Package: None, Destination: Home"

D. "No package or destination set"

Solution

1. Step 1: Analyze method calls

   The program sets the package to 'Book' and destination to 'Home'.

2. Step 2: Understand status() output

   Status shows current package and destination, so it should reflect 'Book' and 'Home'.

3. Final Answer:

   "Package: Book, Destination: Home" -> Option B

4. Quick Check:

   Status shows set package and destination [OK]

Hint: status() shows current package and destination [OK]

Common Mistakes:

• Assuming package or destination is None
• Confusing output format
• Ignoring previous set commands

4. Identify the error in this drone delivery code snippet:

drone.setPackage('Laptop')
drone.flyTo('Office')
drone.deliver()

Assuming flyTo moves drone but delivery requires destination set first.

medium

A. flyTo() should be flyToDestination()

B. Package not set before delivery

C. Missing destination set before flying

D. deliver() method does not exist

Solution

1. Step 1: Check method order and requirements

   Delivery requires setting destination before flying. Here, destination is not set explicitly.

2. Step 2: Identify missing step

   Code calls flyTo('Office') but does not set destination property, which delivery depends on.

3. Final Answer:

   Missing destination set before flying -> Option C

4. Quick Check:

   Destination must be set before flyTo and deliver [OK]

Hint: Always set destination before flying and delivering [OK]

Common Mistakes:

• Skipping destination setup
• Assuming flyTo sets destination automatically
• Confusing method names

5. You want to program a drone to deliver multiple packages to different destinations in sequence. Which approach best fits this task?

hard

A. Use a loop to set each package and destination, then fly and deliver each time

B. Set all packages at once and fly to one destination only

C. Fly randomly and drop packages without setting destinations

D. Deliver packages without flying

Solution

1. Step 1: Understand multi-package delivery needs

   Each package must be assigned a destination and delivered one by one.

2. Step 2: Choose correct programming structure

   A loop allows repeating setPackage, setDestination, fly, and deliver steps for each package.

3. Step 3: Evaluate other options

   Set all packages at once and fly to one destination only ignores multiple destinations. Fly randomly and drop packages without setting destinations is unsafe and random. Deliver packages without flying skips flying, which is needed.

4. Final Answer:

   Use a loop to set each package and destination, then fly and deliver each time -> Option A

5. Quick Check:

   Loop for sequential deliveries [OK]

Hint: Loop through packages and destinations for multiple deliveries [OK]

Common Mistakes:

• Trying to deliver all packages at once
• Ignoring destination assignment
• Skipping flying step