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| Section | Objectives |
|---|---|
| File Handling and Exceptions | - Exception Handling (try, except, finally) - Reading and Writing Files - Custom Exceptions |
| Control Structures | - Loops (for, while) - Conditional Statements (if, elif, else) - Loop Control (break, continue, pass) - Nested Conditionals and Loops |
| Functions | - Recursion - Function Definition and Call - Return Values - Parameters and Arguments - Scope (local and global) |
| Data Structures | - Tuples - Dictionaries - Lists and List Operations - Sets - String Manipulation |
| Object-Oriented Programming | - Constructors (__init__) - Attributes and Methods - Inheritance - Classes and Objects - Encapsulation |
| Python Fundamentals | - Operators and Expressions - Type Conversion - Input/Output Operations - Variables and Data Types |
| Testing and Debugging | - Trace Errors - Debugging Techniques - Unit Testing Concepts |
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NEW QUESTION # 34
A program processes file names and extracts the last 3 characters representing the file extension. For example, files ' document.pdf ' and ' image.png ' would return ' pdf ' and ' png ' , respectively. Which slicing approach would work for either of the provided files?
Answer: B
Explanation:
The slice filename[-3:] extracts the last three characters from a string.
Example:
filename = " document.pdf "
print(filename[-3:])
Output:
pdf
Another example:
filename = " image.png "
print(filename[-3:])
Output:
png
Python strings support slicing, and negative indexes count from the end of the string.
Therefore, the correct answer isC. filename[-3:] .
NEW QUESTION # 35
What determines which lines of code are executed when the condition is true in a Python if statement?
Answer: C
Explanation:
In Python, indentation determines which statements belong to an if block.
Example:
temperature = 30
if temperature > 25:
print( " It is warm. " )
print( " Drink water. " )
Both print() statements are executed when the condition is true because they share the same indentation level under the if statement.
Python does not use parentheses, semicolons, or square brackets to define the body of an if statement. It uses indentation.
Therefore, the correct answer isB. Lines that share the same indentation level.
NEW QUESTION # 36
Which Python data structure cannot be modified after creation?
Answer: B
Explanation:
Atupleis immutable, which means it cannot be changed after it is created.
Example:
coordinates = (10, 20)
After this tuple is created, its elements cannot be modified directly. Python's data model documentation explains that tuples are immutable, while lists and dictionaries are mutable.
Therefore, the correct answer isC. Tuple.
NEW QUESTION # 37
Which index position is returned when the string method .find( ' python ' ) is applied to the string ' learning python programming ' ?
Answer: B
Explanation:
The .find() method returns the lowest index where the searched substring is found.
Example:
" learning python programming " .find( " python " )
Output:
9
Indexing starts at 0 in Python. In the string ' learning python programming ' , the word ' python ' begins at index 9. Python's built-in types documentation describes str.find() as returning the lowest index where the substring is found.
Therefore, the correct answer isB. 9.
NEW QUESTION # 38
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 # 39
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