programming for everybody week 6 quiz answers

Chapter 4

1. Which Python keyword indicates the start of a function definition?

  • def
  • continue
  • help
  • sweet

2. In Python, how do you indicate the end of the block of code that makes up the function?

  • You de-indent a line of code to the same indent level as the def keyword
  • You add a line that has at least 10 dashes
  • You put the “END” keyword in column 7 of the line which is to be the last line of the function
  • You put the colon character (:) in the first column of a line

3. In Python what is the input() feature best described as?

  • A conditional statement
  • A user-defined function
  • The central processing unit
  • A built-in function

4. What does the following code print out?

def thing():
print(‘Hello’)

print(‘There’)

  • thing

    Hello

    There

  • There

  • Hello

    There

  • Hello

5. In the following Python code, which of the following is an "argument" to a function?

x = ‘banana’
y = max(x)
print(y)
  • ‘banana’
  • max
  • x
  • print

6. What will the following Python code print out?

def func(x) :
print(x)

func(10)
func(20)

  • x

    20

  • func

    func

  • 10

    20

  • x

    10

    x

    20

7. Which line of the following Python program will never execute?

def stuff():
print(‘Hello’)
return
print(‘World’)

stuff()
  • return
  • stuff()
  • def stuff():
  • print(‘Hello’)
  • print (‘World’)

8. What will the following Python program print out?

def greet(lang):
if lang == ‘es’:
return’Hola’
elif lang == ‘fr’:
return’Bonjour’
else:
return’Hello’

print(greet(‘fr’),’Michael’)
  • Bonjour Michael
  • Hola Michael
  • Hello Michael

  • def

    Hola

    Bonjour

    Hello

    Michael

9. What does the following Python code print out? (Note that this is a bit of a trick question and the code has what many would consider to be a flaw/bug - so read carefully).

def addtwo(a, b):
added = a + b
return a

x = addtwo(2, 7)
print(x)
  • 7
  • Traceback
  • 2
  • 14

10. What is the most important benefit of writing your own functions?

  • Following the rule that whenever a program is more than 10 lines you must use a function
  • Avoiding writing the same non-trivial code more than once in your program
  • To avoid having more than 10 lines of sequential code without an indent or de-indent
  • Following the rule that no function can have more than 10 statements in it

Assignment 4.6

4.6 Write a program to prompt the user for hours and rate per hour using input to compute gross pay. Pay should be the normal rate for hours up to 40 and time-and-a-half for the hourly rate for all hours worked above 40 hours. Put the logic to do the computation of pay in a function called computepay() and use the function to do the computation. The function should return a value. Use 45 hours and a rate of 10.50 per hour to test the program (the pay should be 498.75). You should use input to read a string and float() to convert the string to a number. Do not worry about error checking the user input unless you want to - you can assume the user types numbers properly. Do not name your variable sum or use the sum() function.

def computepay(h, r):
if h <= 40:
return h * r
else:
regular_pay = 40 * r
overtime_pay = (h – 40) * (r * 1.5)
return regular_pay + overtime_pay

hrs = input(“Enter Hours: “)
rate = input(“Enter Rate per Hour: “)

hours = float(hrs)
hourly_rate = float(rate)

pay = computepay(hours, hourly_rate)

print(“Pay”, pay)

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