Delivery drone concept in Drone Programming - Mini Project: Build & Apply

Delivery drone concept

📖 Scenario: You are programming a delivery drone that carries packages to different locations in a city. The drone needs to know the packages it carries, the maximum weight it can carry, and then calculate the total weight of the packages to check if it is within the limit.

🎯 Goal: Build a simple program that stores package weights, sets a maximum weight limit, calculates the total weight of packages, and prints whether the drone can carry all packages safely.

📋 What You'll Learn

Create a dictionary with package names and their weights

Create a variable for the drone's maximum weight capacity

Calculate the total weight of all packages using a loop

Print a message showing the total weight and if it is within the limit

💡 Why This Matters

🌍 Real World

Delivery drones need to manage their load carefully to avoid accidents and ensure safe delivery.

💼 Career

Understanding how to manage data and conditions is important for programming drones and other automated delivery systems.

1

Create the package weights dictionary

Create a dictionary called packages with these exact entries: 'PackageA': 2.5, 'PackageB': 1.0, 'PackageC': 3.0

Drone Programming

# Create the packages dictionary with exact weights
# Your code here

Hint

Use curly braces to create a dictionary with keys as package names and values as weights.

2

Set the drone's maximum weight capacity

Create a variable called max_weight and set it to 7.0 to represent the drone's maximum weight capacity in kilograms.

Drone Programming

packages = {'PackageA': 2.5, 'PackageB': 1.0, 'PackageC': 3.0}
# Create max_weight variable and set it to 7.0
# Your code here

Hint

Just assign the number 7.0 to the variable max_weight.

3

Calculate the total weight of packages

Create a variable called total_weight and set it to 0. Then use a for loop with variables package and weight to iterate over packages.items(). Inside the loop, add weight to total_weight.

Drone Programming

packages = {'PackageA': 2.5, 'PackageB': 1.0, 'PackageC': 3.0}
max_weight = 7.0
# Calculate total_weight by summing all package weights
# Your code here

Hint

Start with total_weight = 0. Then add each package's weight to total_weight inside the loop.

4

Print the total weight and check capacity

Write a print statement that shows the total weight using an f-string: print(f"Total weight: {total_weight} kg"). Then write an if statement to check if total_weight is less than or equal to max_weight. If yes, print "Drone can carry all packages safely." else print "Drone cannot carry all packages safely."

Drone Programming

packages = {'PackageA': 2.5, 'PackageB': 1.0, 'PackageC': 3.0}
max_weight = 7.0
total_weight = 0
for package, weight in packages.items():
    total_weight += weight
# Print total weight and check if drone can carry packages
# Your code here

Hint

Use an f-string to print total_weight. Then use an if-else to print the correct message based on the weight check.

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