Write three lines of code, each with a different error. Then, explain how to fix each one.

Question

Is there an error in this program? If so, what is it, what type is it, and how would you fix it?

def sum(num1, num2):
return num1 + num2

print(sum("four", "five"))

What is wrong with this program, which will be part of an exercise app, and how would you fix it?

print("Next, we'll do four push-ups.")

for i in range(4):
print("Do push-up #", i)

Describe five items that you would put into a software requirements specification if you were hiring someone to design an app to help museum visitors have a better experience.
Identify five errors in this program, which is supposed to take the average mean
of three numbers:

define average(one, two, three):
avg = one + two * three
return aver

print("The average of 6, 7, and 8 is: ," average(6, 7, 8))
python

Answer 1

Code with Errors and Fixes

1. Code with Error:

   print(sum("four", "five"))
   

   Error Type: TypeError (Trying to add two strings instead of numbers). Fix: Ensure that the inputs are numbers. You can modify the print statement to convert the inputs to integers (if applicable) or handle them appropriately:

   print(sum(int("4"), int("5")))
   

   Alternatively, if values need to stay as strings but be concatenated, you could simply use sum with string concatenation.

2. Code with Error:

   print("Do push-up #", i)
   

   Error Type: Logical error (Incorrect print formatting). Fix: To display the correct push-up number (1 to 4), you need to add 1 to i:

   print("Do push-up #", i + 1)
   

3. Code with Error:

   define average(one, two, three):
   

   Error Type: SyntaxError (Using 'define' instead of 'def'). Fix: Change 'define' to 'def':

   def average(one, two, three):
   

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Analysis of the Given Program

The analyzed line of code:

print("The average of 6, 7, and 8 is: ," average(6, 7, 8))

Errors Identified:

1. Error in the average function:

   avg = one + two * three
   

   • Error Type: Logical error (Incorrect calculation).
   • Fix: To calculate the average, the correct formula should be:

   avg = (one + two + three) / 3
   

2. Incorrect variable name in return:

   return aver
   

   • Error Type: NameError (Using an undefined variable).
   • Fix: Change return aver to return avg.

3. Incorrect syntax in function invocation:

   print("The average of 6, 7, and 8 is: ," average(6, 7, 8))
   

   • Error Type: SyntaxError (Missing operator between string and function call).
   • Fix: Add the + operator to concatenate the string and the function call:

   print("The average of 6, 7, and 8 is: " + str(average(6, 7, 8)))
   

4. Print function should handle conversions properly:

   • Ensure that average returns a number and the output is properly formatted. Fix in above step considered that.

5. Potential additional error in assumptions:

   • If negative or non-numeric inputs are passed to the average function, additional input validation should be implemented to handle this.

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Five Items for a Software Requirements Specification for a Museum Visitor App

1. User Accounts and Personalization:

   • Allow visitors to create accounts, personalize experiences, save favorite exhibits, and receive recommendations based on interests.

2. Interactive Map and Navigation:

   • Provide a digital, interactive map of the museum so visitors can navigate easily to exhibits, restrooms, and exits, with real-time updates on crowding or events.

3. Multilingual Support:

   • Support multiple languages for visitors from different backgrounds to enhance accessibility and understanding of exhibits.

4. Exhibit Information and Augmented Reality:

   • Include detailed descriptions, images, and videos for each exhibit, and integrate AR features to provide immersive experiences.

5. Event Scheduling and Notifications:

   • Provide functionality for visitors to view upcoming events, workshops, or tours within the museum; allow for reminders and push notifications.