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WGU Foundations of Programming (Python) - E010 JIV1 Sample Questions (Q52-Q57):

NEW QUESTION # 52
In the code for item in my_list:, what does item represent?

Answer: B

Explanation:
In the loop:
for item in my_list:
print(item)
item represents the current element from my_list during each loop iteration.
For example:
my_list = [ " apple " , " banana " ]
for item in my_list:
print(item)
The loop first processes " apple " , then " banana " . Python's documentation explains that a for statement iterates over the items of a sequence in order.
Therefore, the correct answer isB. The current element being processed.


NEW QUESTION # 53
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: D

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 # 54
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 # 55
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 # 56
Fix the off-by-one error in this function that should return the first 3 characters of a string.
def first_three(text):
return text[0:2]

Answer:

Explanation:
See the Step by Step Solution below in Explanation.
Explanation:
Step 1: Python string slicing uses this format:
text[start:stop]
Step 2: The start index is included.
Step 3: The stop index is excluded.
Step 4: To return the first 3 characters, start at index 0 and stop at index 3.
Correct code:
def first_three(text):
return text[0:3]
Simplified correct code:
def first_three(text):
return text[:3]
Example:
print(first_three( " Python " ))
Output:
Pyt


NEW QUESTION # 57
......

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