Exam for engine

Q17. Which loop structure processes every individual item in a list called grades?

Q18. A program uses this while loop to count down:
count = 5
while count > 0:
print(count)
Which issue is preventing the loop from working correctly?

Q19. How can the first four characters be extracted from the string ‘ computer ‘ ?

Q20. Which type of loop repeatedly checks a condition to determine whether to continue?

Q21. Which tool is used to execute Python code line-by-line interactively within a terminal?

Q22. A program needs to update all values in a list by adding 5 to each number. Which for loop structure accomplishes this task?

Q23. 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

Q24. Complete the function get_second_item(items) that takes a list and returns the second item. Assume the input is always a list containing at least two elements.
For example, get_second_item([10, 20, 30]) should return 20.
def get_second_item(items):
# TODO: Return the second item from the list
pass

Q25. Which data type does the expression 5 > 3 evaluate to in Python?

Q26. What determines which lines of code are executed when the condition is true in a Python if statement?

Q27. Which terminal command is used to navigate to a different directory before running a Python script?

Q28. Complete the function get_dict_keys(data) that takes a dictionary and returns a list of all its keys.
For example, get_dict_keys({ ” name ” : ” John ” , ” age ” : 25}) should return [ ” name ” , ” age ” ].
def get_dict_keys(data):
# TODO: Return a list of all dictionary keys
pass

Q29. Which punctuation mark must appear at the end of an if statement line?

Q30. 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?

Q31. Write a complete function calculate_average(grades) that takes a list of grades and returns the average as a float.
For example, calculate_average([85, 92, 78]) should return 85.0.
def calculate_average(grades):
# TODO: Calculate and return the average grade as a float
pass

Q32. Write a complete function convert_temperature(celsius) that converts Celsius to Fahrenheit using the formula:
F = C * 9/5 + 32.
For example, convert_temperature(0) should return 32.0.
def convert_temperature(celsius):
# TODO: Convert Celsius to Fahrenheit using F = C * 9/5 + 32
pass

Q33. What must a developer do to run Python code written in a text editor?

Q34. In Python, what must follow the in keyword in a for loop?

Q35. 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]

Q36. Which keyword is used to exit a loop prematurely in Python?

Q37. Which action allows a Python script located in a different folder to be executed in the terminal?

Q38. Fix the missing return statement in this function that should return whether a number is even.
def is_even(number):
if number % 2 == 0:
True
else:
False