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| Section | Objectives |
|---|---|
| Topic 1: Object-Oriented Programming | - Constructors (__init__) - Encapsulation - Attributes and Methods - Classes and Objects - Inheritance |
| Topic 2: Functions | - Function Definition and Call - Recursion - Parameters and Arguments - Scope (local and global) - Return Values |
| Topic 3: Testing and Debugging | - Unit Testing Concepts - Trace Errors - Debugging Techniques |
| Topic 4: Data Structures | - String Manipulation - Tuples - Lists and List Operations - Dictionaries - Sets |
| Topic 5: Control Structures | - Nested Conditionals and Loops - Loop Control (break, continue, pass) - Conditional Statements (if, elif, else) - Loops (for, while) |
| Topic 6: File Handling and Exceptions | - Custom Exceptions - Exception Handling (try, except, finally) - Reading and Writing Files |
| Topic 7: Python Fundamentals | - Type Conversion - Operators and Expressions - Variables and Data Types - Input/Output Operations |
>> Foundations-of-Programming-Python Valid Braindumps Questions <<
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NEW QUESTION # 56
Modify the function greet_with_default(name) by adding a default value of " World " to the name parameter so it can be called with or without an argument.
def greet_with_default(name):
# TODO: Add a default value of " World " to the name parameter
return " Hello " + name
Answer:
Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: A default parameter value allows a function to be called even when no argument is provided.
Step 2: The default value should be added in the function header.
Step 3: The parameter name should have the default value " World " .
Correct code:
def greet_with_default(name= " World " ):
return " Hello " + name
Example:
print(greet_with_default())
print(greet_with_default( " Alice " ))
Output:
Hello World
Hello Alice
NEW QUESTION # 57
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: A
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 # 58
A program needs to update all values in a list by adding 5 to each number. Which for loop structure accomplishes this task?
Answer: A
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 # 59
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: C
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 # 60
Which loop structure processes every individual item in a list called grades?
Answer: B
Explanation:
The loop:
for grade in grades:
print(grade)
processes every individual item in the list grades.
The variable grade represents the current item being processed. Python's documentation explains that a for statement iterates over the items of a sequence in order.
Therefore, the correct answer isB. for grade in grades:.
NEW QUESTION # 61
......
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