Question

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

Answer 1

### Code with Errors and Their Fixes

1. **Error Code:**
```python
print(sum("four", "five"))
```
**Type of Error:** TypeError
**Explanation:** The `sum` function is meant to add numbers, but it is being called with string arguments ("four" and "five").
**Fix:** To fix this error, ensure that the arguments passed to the `sum` function are integers or floats. For example:
```python
print(sum(4, 5))
```

2. **Error Code:**
```python
print("Do push-up #", i)
```
**Type of Error:** Logical Mistake (Improper Concatenation)
**Explanation:** This will print "Do push-up # 0", "Do push-up # 1", etc., which includes a comma instead of concatenating the string properly.
**Fix:** To fix this, you can use string formatting to create a clearer message:
```python
print("Do push-up #", i + 1) # Adding 1 to start from 1 instead of 0.
```

3. **Error Code:**
```python
define average(one, two, three):
```
**Type of Error:** SyntaxError
**Explanation:** The keyword `define` is incorrect; the correct keyword for function definition in Python is `def`.
**Fix:** Change `define` to `def`:
```python
def average(one, two, three):
```

### Identifying Errors in the Average Calculation Program

1. **Error:**
```python
avg = one + two * three
```
**Correction:** The average formula is incorrectly calculated. It should be:
```python
avg = (one + two + three) / 3
```

2. **Error:**
```python
return aver
```
**Correction:** The variable `aver` is undefined. It should return `avg` instead:
```python
return avg
```

3. **Error:**
```python
print("The average of 6, 7, and 8 is: ," average(6, 7, 8))
```
**Correction:** A comma is incorrectly placed before the function call. It should use a `+` for concatenation. The correct syntax is:
```python
print("The average of 6, 7, and 8 is: " + str(average(6, 7, 8)))
```

4. **Error Type:** SyntaxError (missing parentheses)
**Correction:** Ensure that when defining the function, the parentheses are correctly given:
```python
def average(one, two, three):
```

5. **Error in Scope:** Not adding the parameters correctly in the average calculation.
**Correction:** Ensure the computation of average accounts for all three numbers as shown above.

### Five Items for Software Requirements Specification

1. **User Interface Design:** Requirements for a user-friendly interface that enhances ease of navigation and accessibility for visitors in the museum.

2. **Interactive Map:** Functional specifications for an interactive digital map guiding visitors through exhibits, including points of interest and restroom locations.

3. **Exhibit Information:** Details on providing real-time information on current exhibits, hours of operation, and upcoming events directly through the app.

4. **Push Notifications:** The ability to send push notifications to users regarding special events, discounts, and reminders of scheduled tours.

5. **Feedback Mechanism:** A feature that allows visitors to give feedback on their experience, providing the museum with valuable data for improvements.