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| Section | Objectives |
|---|---|
| Topic 1: Python Programming Fundamentals | - Syntax and basic structure - Operators and expressions - Variables and data types |
| Topic 2: Introduction to Object-Oriented Programming | - Basic OOP concepts - Classes and objects |
| Topic 3: Functions and Modularity | - Modules and imports - Function definition and scope |
| Topic 4: Data Structures | - Basic data manipulation - Lists, tuples, dictionaries |
| Topic 5: Debugging and Testing Basics | - Basic testing concepts - Error identification and correction |
| Topic 6: Control Flow | - Loops (for, while) - Conditional statements (if / elif / else) |
| Topic 7: File Handling and Exceptions | - Exception handling (try/except) - Reading and writing files |
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NEW QUESTION # 10
Which terminal command is used to navigate to a different directory before running a Python script?
Answer: D
Explanation:
The command cd means "change directory." It is used in a terminal to move from one folder to another.
Example:
cd Desktop
After navigating to the correct folder, a Python script can be run with a command such as:
python script.py
Therefore, the correct answer isC. cd.
NEW QUESTION # 11
A program needs to display only positive, non-zero numbers from a list containing a mixture of integer and decimal values. Which conditional statement should be placed inside the loop?
Answer: A
Explanation:
To display only positive, non-zero numbers, the condition should check whether each number is greater than 0.
Correct condition:
if number > 0:
Example:
numbers = [-2, 0, 1, 3.5, -4.2]
for number in numbers:
if number > 0:
print(number)
Output:
1
3.5
The condition number > 0 works for both integers and decimal values. The condition number > = 1 would incorrectly exclude positive decimal values such as 0.5.
Therefore, the correct answer isA. if number > 0:.
NEW QUESTION # 12
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 # 13
Which Python data structure allows duplicate values and supports methods like append() and remove()?
Answer: C
Explanation:
A list is a Python data structure that can store multiple values. Lists can contain duplicate values, and they support methods such as append() and remove().
Example:
fruits = [ " apple " , " banana " , " apple " ]
fruits.append( " orange " )
fruits.remove( " banana " )
print(fruits)
Output:
[ ' apple ' , ' apple ' , ' orange ' ]
The value " apple " appears more than once, showing that lists allow duplicates.
The official Python documentation lists list.append() as a method that adds an item to the end of a list and list.
remove() as a method that removes the first matching value from a list.
Therefore, the correct answer is C. List.
NEW QUESTION # 14
Fix the logic error in this function that should return the larger of two numbers.
def find_maximum(a, b):
if a < b:
return a
else:
return b
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: The function should return the larger number.
Step 2: The condition a < b means b is larger than a.
Step 3: In the original code, when a < b is true, it incorrectly returns a.
Step 4: The return values need to be corrected.
Correct code:
def find_maximum(a, b):
if a < b:
return b
else:
return a
Alternative correct code:
def find_maximum(a, b):
if a > b:
return a
else:
return b
Example:
print(find_maximum(10, 20))
print(find_maximum(30, 15))
Output:
20
30
NEW QUESTION # 15
......
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