WGU Foundations-of-Programming-Python Practice Exam Questions & Answers

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

The command cd means ''change directory.'' It is used in a terminal to move from one folder to another.

Example:

cd Desktop

After navigating to the correct folder, a Python script can be run with a command such as:

python script.py

Therefore, the correct answer isC. cd.

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:.

A set is a Python data structure that stores only unique elements. This means duplicate values are automatically removed.

Example:

numbers = {1, 2, 2, 3}

print(numbers)

Output:

{1, 2, 3}

The duplicate value 2 appears only once in the set.

Sets are also unordered, so they do not support indexing like lists or tuples do. For example, numbers[0] would cause an error because sets are not accessed by position.

The official Python documentation describes sets as unordered collections with no duplicate elements.

Therefore, the correct answer is D. Set.

A Python for loop is used to iterate over an iterable object, such as a list, tuple, string, dictionary, set, or range() object.

A basic for loop needs:

A loop variable

An iterable object

An indented code block

Example:

for number in range(3):

print(number)

In this example:

number is the loop variable.

range(3) is the iterable.

print(number) is the indented code block that runs during each loop iteration.

According to the official Python documentation, the for statement is a construct that works with iterable objects.

Therefore, the correct answer is A. A variable, an iterable, and an indented code block.