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| Section | Objectives |
|---|---|
| Control Flow | - Loops (for, while) - Conditional statements (if / elif / else) |
| Functions and Modularity | - Modules and imports - Function definition and scope |
| Debugging and Testing Basics | - Basic testing concepts - Error identification and correction |
| Data Structures | - Lists, tuples, dictionaries - Basic data manipulation |
| Introduction to Object-Oriented Programming | - Basic OOP concepts - Classes and objects |
| File Handling and Exceptions | - Reading and writing files - Exception handling (try/except) |
| Python Programming Fundamentals | - Syntax and basic structure - Operators and expressions - Variables and data types |
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NEW QUESTION # 11
Which type of loop repeatedly checks a condition to determine whether to continue?
Answer: D
Explanation:
Awhile looprepeatedly executes a block of code as long as its condition remains true.
Example:
count = 1
while count < = 3:
print(count)
count += 1
In this example, Python checks the condition count < = 3 before each loop iteration. If the condition is true, the loop continues. When the condition becomes false, the loop stops.
A for loop is usually used to iterate over a sequence, such as a list, string, or range. Python does not have a built-in repeat loop construct.
Therefore, the correct answer isB. while loop.
NEW QUESTION # 12
Which keyword moves a loop immediately to its subsequent iteration?
Answer: B
Explanation:
The Python keyword continue is used inside a loop to skip the rest of the current iteration and move immediately to the next iteration.
Example:
for number in range(5):
if number == 2:
continue
print(number)
Output:
0
1
3
4
When number is 2, the continue statement skips print(number) for that iteration and moves to the next loop cycle.
The official Python documentation states that the continue statement continues with the next iteration of the loop.
Therefore, the correct answer is C. continue.
NEW QUESTION # 13
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: D
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 # 14
Which symbol begins a single-line comment in Python?
Answer: C
Explanation:
In Python, a single-line comment begins with the # symbol.
Example:
# This is a comment
print( " Hello " )
Python ignores the comment when the program runs. The Python documentation identifies # as the symbol used for comments.
Therefore, the correct answer isB. # pound symbol.
NEW QUESTION # 15
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 # 16
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