Question

What is the output of this program?
Assume the user enters “kipp52”, then “baseball45”.

# Checks if the user entered the correct username
def validate_user(username):
if username != "coder43" and username != "goodHacker90" and username != "baseball45":
return False
else:
return True

# Gets the user's username
def get_username():
while True:
username = input("Enter your username: ")
if validate_user(username):
print("Welcome!")
return username
else:
print("That's not a valid username. Try again")


print("Welcome to CodeHS!")
get_username()


Welcome to CodeHS!
Enter your username: kipp52
That's not a valid username. Try again
Enter your username: baseball45
Welcome!

Welcome to CodeHS!
Enter your username: kipp52
Enter your username: baseball45
Welcome!

Welcome to CodeHS!
Enter your username: kipp52
That's not a valid username. Try again
Enter your username: baseball45

Welcome to CodeHS!
Enter your username: kipp52
That's not a valid username. Try again
Enter your username: baseball45
That's not a valid username. Try again
Welcome!
Question: 6
Which of the following options is NOT a valid Python function definition?



# computes the surface area of a cube of side length 10
#
def surface_area():
return 2*(100 + 100 + 100)

# computes the surface area of a rectangular prism
def surface_area(length, width=10, height):
return 2*(length * width + width * height + height * length)

# computes the surface area of a rectangular prism
def surface_area(length, width, height):
return 2*(length * width + width * height + height * length)

# computes the surface area of a rectangular prism
def surface_area(length, width, height=10):
return 2*(length * width + width * height + height * length)

Answer 1

Output of the program (with the user typing kipp52, then baseball45):

Welcome to CodeHS!
Enter your username: kipp52
That's not a valid username. Try again
Enter your username: baseball45
Welcome!

Which function definition is NOT valid:
- The second one is invalid:
def surface_area(length, width=10, height):
This is a syntax error because a parameter with a default value (width=10) cannot come before a non-default parameter (height).