2.17. Write Code Questions

1. There are 3 syntax errors in the following code. Fix it to print correctly without errors. It will print, “Her name is Molly and her favorite food is tuna”.

   food = "tuna' name = 'Molly' print("Her name is " + name + and her favorite food is " food + ".")

   There are 3 syntax errors in the following code. Fix it to print correctly without errors. It will print, “Her name is Molly and her favorite food is tuna”.

   # Each set of quotes needs to be matching food = 'tuna' name = 'Molly' # Place full sets of quotes around strings to be printed # Include spaces before and after where variables are printed # Add + between strings print("Her name is " + name + " and her favorite food is " + food + ".")

2. Let’s say that apples are $0.40 apiece, and pears are $0.65 apiece. Modify the program below to calculate the total cost of 4 apples and 3 pears

   apples = 4 pears = 3 totalCost = print(totalCost) ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertAlmostEqual(totalCost,3.55, 2, "totalCost should equal 3.55", 0.2) myTests().main()

3. Take the phrase: twinkle twinkle little star. Store each word in a separate variable, then print out the sentence on one line using print.

   Take the phrase: twinkle twinkle little star. Store each word in a separate variable, then print out the sentence on one line using print.

   # Set each word to its own variable word1 = "twinkle" word2 = "little" word3 = "star" # Print each word in succession # Using commas automaticallly inserts spaces print(word1, word1, word2, word3) #another option is #print(word1 + " " + word1 + " " + word2 + " " + word3)

4. Add parentheses to the following code so that the total equals 40.

   total = 7 + 3 * 6 - 2 print(total) ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(total,40) myTests().main()

5. Many people keep time using a 24 hour clock (11 is 11am and 23 is 11pm, 0 is midnight). If it is currently 13 and you set your alarm to go off in 50 hours, it will be 15 (3pm). Write a Python program to solve the general version of the above problem. Ask the user for the time now (in hours), and then ask for the number of hours to wait for the alarm. Your program should output what the time will be on the clock when the alarm goes off. Using the ``int()`` function and modulus operator ``%`` could come in handy!

   current_time = waiting_time = hours = print()

   Many people keep time using a 24 hour clock (11 is 11am and 23 is 11pm, 0 is midnight). If it is currently 13 and you set your alarm to go off in 50 hours, it will be 15 (3pm). Write a Python program to solve the general version of the above problem. Ask the user for the time now (in hours), and then ask for the number of hours to wait for the alarm. Your program should output what the time will be on the clock when the alarm goes off. Using the ``int()`` function and modulus operator ``%`` could come in handy!

   #prompt the user for the current time current_time_string = input("What is the current time (in hours)?") #prompt the user for the time to wait waiting_time_string = input("How many hours do you have to wait?") #convert the current time and the time to wait to integers current_time_int = int(current_time_string) waiting_time_int = int(waiting_time_string) #combine the two times hours = current_time_int + waiting_time_int #use the modulus operator to keep the time within 24 hours timeofday = hours % 24 #print the time of day that the alarm will go off print(timeofday)

6. Assume that you have 24 slices of pizza and 7 people that are going to share it. There’s been some arguments among your friends, so you’ve decided to only give people whole slices. Your pet dog Andy loves pizza. Write a Python expression with the modulus operator that calculates how many pizza slices will be left over for your dog after serving just whole slices to 7 people. Assign the result of that expression to forAndy.

   ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(forAndy,3) myTests().main()

7. Write a program that will convert inches to feet from user input. Reminder: there are 12 inches in a foot.

   Write a program that will convert inches to feet from user input. Reminder: there are 12 inches in a foot.

   #prompt the user for the amount of inches they would like to convert inches = input("How many inches would you like to convert?") #convert the inches to an integer inches_int = int(inches) #convert to feet feet = inches_int / 12 #print the amount of feet print(feet)

8. Write a program that will convert feet to inches from user input. Reminder: there are 12 inches in a foot.

9. Combine lines 4 and 5 in the code below to print: “270 is 4.0 hours and 30 minutes.”.

   totalMinutes = 270 numMinutes = totalMinutes % 60 numHours = (totalMinutes - numMinutes) / 60 print(numHours) print(numMinutes)

   Combine lines 4 and 5 in the code below to print: “270 is 4.0 hours and 30 minutes.”.

   totalMinutes = 270 numMinutes = totalMinutes % 60 numHours = (totalMinutes - numMinutes) / 60 # Use + and correctly spaced " " to write the variables out together print(str(totalMinutes) + " is " + str(numHours) + " hours and " + str(numMinutes) + " minutes.")

10. Write code below to get at least 3 values from the user using the input function and output a mad lib (which will use the input to tell a silly story).

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