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

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.

In Python, an if statement line must end with a colon.

Example:

age = 18

if age >= 18:

print('Adult')

The colon : tells Python that an indented block of code follows. That indented block contains the statements that should run when the condition is true.

A semicolon, period, or comma is not used to begin the body of an if statement in Python.

Therefore, the correct answer is B. : colon.

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.

A dictionary stores data as key-value pairs. In this function, the student name is the key, and the grade is the value.

Correct code:

def update_grade(grades, student, new_grade):

grades[student] = new_grade

return grades

Example:

update_grade({'Alice': 85, 'Bob': 90}, 'Alice', 95)

Result:

{'Alice': 95, 'Bob': 90}

Python's built-in types documentation includes dictionaries as mapping types, where values are accessed and updated using keys.

Therefore, the correct answer isA.

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

Step 1: The function receives one parameter named grades, which is a list of numbers.

Step 2: Use sum(grades) to add all the grades together.

Step 3: Use len(grades) to count how many grades are in the list.

Step 4: Divide the total by the number of grades.

Correct code:

def calculate_average(grades):

return sum(grades) / len(grades)

Example:

print(calculate_average([85, 92, 78]))

Output:

85.0

The break keyword exits a loop immediately before the loop condition naturally becomes false or before all items have been processed.

Example:

for number in range(10):

if number == 5:

break

print(number)

When number becomes 5, the loop stops. Python's control-flow documentation explains the use of break in loops.

Therefore, the correct answer isB. break.