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| Section | Objectives |
|---|---|
| Topic 1: Debugging and Testing Basics | - Basic testing concepts - Error identification and correction |
| Topic 2: File Handling and Exceptions | - Exception handling (try/except) - Reading and writing files |
| Topic 3: Control Flow | - Loops (for, while) - Conditional statements (if / elif / else) |
| Topic 4: Data Structures | - Basic data manipulation - Lists, tuples, dictionaries |
| Topic 5: Python Programming Fundamentals | - Variables and data types - Operators and expressions - Syntax and basic structure |
| Topic 6: Functions and Modularity | - Modules and imports - Function definition and scope |
| Topic 7: Introduction to Object-Oriented Programming | - Classes and objects - Basic OOP concepts |
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NEW QUESTION # 19
Write a complete function calculate_discount(price, discount_percent) that calculates and returns the final price after applying a discount percentage.
For example, calculate_discount(75, 20) should return 60.0.
def calculate_discount(price, discount_percent):
# TODO: Calculate and return the final price after discount
pass
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives the original price and the discount_percent.
Step 2: Convert the discount percentage into a decimal by dividing by 100.
Step 3: Subtract the discount from 1 to find the remaining price percentage.
Step 4: Multiply the original price by the remaining percentage.
Correct code:
def calculate_discount(price, discount_percent):
return price * (1 - discount_percent / 100)
Example:
print(calculate_discount(75, 20))
Output:
60.0
NEW QUESTION # 20
Write a complete function calculate_average(grades) that takes a list of grades and returns the average as a float.
For example, calculate_average([85, 92, 78]) should return 85.0.
def calculate_average(grades):
# TODO: Calculate and return the average grade as a float
pass
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives one parameter named grades, which is a list of numbers.
Step 2: Use sum(grades) to add all the grades together.
Step 3: Use len(grades) to count how many grades are in the list.
Step 4: Divide the total by the number of grades.
Correct code:
def calculate_average(grades):
return sum(grades) / len(grades)
Example:
print(calculate_average([85, 92, 78]))
Output:
85.0
NEW QUESTION # 21
Write a complete function reverse_string(text) that takes a string and returns it reversed.
For example, reverse_string( " hello " ) should return " olleh " .
def reverse_string(text):
# TODO: Return the reversed string
pass
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives one string parameter named text.
Step 2: Python slicing can be used to reverse a string.
Step 3: The slice [::-1] means start at the end of the string and move backward by one character at a time.
Step 4: Return text[::-1].
Correct code:
def reverse_string(text):
return text[::-1]
Example:
print(reverse_string( " hello " ))
Output:
olleh
NEW QUESTION # 22
Complete the function calculate_tip(bill, tip_percent) that calculates and returns the tip amount based on the bill and tip percentage.
For example, calculate_tip(50, 20) should return 10.0.
def calculate_tip(bill, tip_percent):
# TODO: Calculate and return the tip amount
pass
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function receives two parameters: bill and tip_percent.
Step 2: Convert the percentage into a decimal by dividing tip_percent by 100.
Step 3: Multiply the bill amount by that decimal value.
Correct code:
def calculate_tip(bill, tip_percent):
return bill * tip_percent / 100
Example:
print(calculate_tip(50, 20))
Output:
10.0
NEW QUESTION # 23
A dictionary prices = { ' apple ' : 1.50, ' banana ' : 0.75, ' orange ' : 2.00} needs to have all values increased by
0.25. Which code correctly accomplishes this task?
Answer: C
Explanation:
In Python, iterating directly over a dictionary gives itskeys. In this dictionary, the keys are:
' apple '
' banana '
' orange '
To update each price, the program can loop through each key and use that key to access and change the corresponding value.
Correct code:
prices = { ' apple ' : 1.50, ' banana ' : 0.75, ' orange ' : 2.00}
for item in prices:
prices[item] = prices[ item] + 0.25
print(prices)
Output:
{ ' apple ' : 1.75, ' banana ' : 1.0, ' orange ' : 2.25}
Option B is incorrect because value actually receives each dictionary key, not each dictionary value. Also, assigning to value would not update the dictionary.
Option C is incorrect because item is not defined, and the loop structure is invalid for this task.
NEW QUESTION # 24
......
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