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| Section | Objectives |
|---|---|
| Python Fundamentals | - Operators and Expressions - Variables and Data Types - Type Conversion - Input/Output Operations |
| Functions | - Return Values - Function Definition and Call - Parameters and Arguments - Recursion - Scope (local and global) |
| Control Structures | - Loop Control (break, continue, pass) - Nested Conditionals and Loops - Loops (for, while) - Conditional Statements (if, elif, else) |
| File Handling and Exceptions | - Custom Exceptions - Reading and Writing Files - Exception Handling (try, except, finally) |
| Object-Oriented Programming | - Inheritance - Constructors (__init__) - Attributes and Methods - Encapsulation - Classes and Objects |
| Data Structures | - Sets - Lists and List Operations - Tuples - Dictionaries - String Manipulation |
| Testing and Debugging | - Debugging Techniques - Unit Testing Concepts - Trace Errors |
>> Foundations-of-Programming-Python Latest Test Question <<
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NEW QUESTION # 17
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 # 18
What does the string method ' ' .join() return when applied to the list [ ' Hello ' , ' World ' ]?
Answer: A
Explanation:
The string method join() combines the strings in an iterable using the string before .join() as the separator.
In this question, the separator is an empty string:
' ' .join([ ' Hello ' , ' World ' ])
Because the separator is empty, Python joins ' Hello ' and ' World ' directly together with no space or comma between them.
Result:
' HelloWorld '
The official Python documentation defines str.join() as returning a string made by joining the strings in the given iterable.
Therefore, the correct answer is B. ' HelloWorld ' .
NEW QUESTION # 19
A program needs to update all values in a list by adding 5 to each number. Which for loop structure accomplishes this task?
Answer: B
Explanation:
To update the actual values inside a list, the program must update each value by itsindex.
The correct code is:
for i in range(len(numbers)):
numbers[i] = numbers[i] + 5
Here, range(len(numbers)) produces valid index positions for the list. The variable i is used to access and update each list element.
Example:
numbers = [10, 20, 30]
for i in range(len(numbers)):
numbers[i] = numbers[i] + 5
print(numbers)
Output:
[15, 25, 35]
Option A does not correctly update the original list:
for number in numbers:
number = number + 5
This changes only the temporary loop variable number, not the actual elements stored inside the list.
Therefore, the correct answer isB.
NEW QUESTION # 20
Which type of loop is designed for iterating a specific number of times?
Answer: A
Explanation:
A for loop is commonly used when a program needs to repeat code for each item in a sequence or for a specific number of times using range().
Example:
for number in range(5):
print(number)
This loop runs 5 times. Python's documentation explains that the for statement iterates over items of a sequence or iterable.
Therefore, the correct answer isB. for loop.
NEW QUESTION # 21
What distinguishes a terminal-based Python environment from other development environments?
Answer: D
Explanation:
A terminal-based Python environment uses atext-based command line interface. In this environment, the user types commands directly into a terminal or command prompt.
For example, a user may start Python by typing:
python
When Python is started from a terminal, the interpreter can run in interactive mode, where it displays prompts such as > > > and waits for the user to enter Python commands. The official Python documentation explains that when commands are read from a terminal, the interpreter is in interactive mode.
A terminal-based environment is not mainly identified by graphical user interface elements, internet connectivity, or automatic file saving.
Therefore, the correct answer isC. Text-based command line interface.
NEW QUESTION # 22
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