Chapter 4 Exercises¶

1. There are 3 syntax errors in the following code. Fix it to print correctly without errors. It will print, “Your name is Carly and your favorite color is red”.

   color = "red' name = 'Carly' print("Your name is " + name + and your favorite color is" + color + ".")

2. Fix the syntax errors so it prints “My name is Sam and I am 12 years old.”

   name = Sam age = 12 print("My name is name and I am" + age + "years old".)

3. You will get an error if you try to run the following code. Fix the code to print correctly without errors. It should print, “Your name is Carly and your age is 5.”

   age = 5 name = 'Carly' print("Your name is" + name + "and your age is" + age + ".")

4. Using the variables given, modify the print statement to print "A car travelling at 70 mph takes 2.0 hours to go 140 miles."

   miles_per_hour = 70 miles_travelled = 140 hours_taken = miles_travelled / miles_per_hour print(hours_taken)

5. There are 3 syntax errors in the following code. Fix it to print correctly without errors. It will print your name and age.

   age = input("How old are you?") name = input ("What is your first name?") print ("Your name is " + Name " and you are " age "years old.")

6. Fix the syntax errors so that the code prints “The apple costs $5”.

   fruit = apple price = 5 print("The" fruit "costs $" + "price")

7. Modify line 6 to print: “The number of miles you can drive on 25 dollars is 273.97260274.”

   funds = 25 miles_per_gallon = 40 price_per_gallon = 3.65 num_gallons = funds / price_per_gallon num_miles = miles_per_gallon * num_gallons print(num_miles)

8. Complete the code so that only “B” is printed, then change it so that only “C” is printed.

   phrase = "The Big Chill" ch = ?? print(ch)

9. Complete the code so that only “B” is printed, then change it so that only “C” is printed.

   phrase = "The Big Chill" pos = phrase.find(??) print(phrase[pos])

10. Complete the code so that only “giant alligator” is printed.

    sentence = "There is a giant alligator over there." s1 = ?? print(s1)

11. Modify line 6 to print: “You can order 40.0 wings when you have 5 people who can each spend 4 dollars and wings cost 0.5 each.”

    num_people = 5 amount_per_person = 4 price = 0.5 total = num_people * amount_per_person num_wings = total / price print(num_wings)

12. Fix the code so that only “meow” is printed.

    sentence = "The cat goes meow." s2 = [16:13]sentence print(s2)

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

    total_minutes = 270 num_minutes = total_minutes % 60 num_hours = (total_minutes - num_minutes) / 60 print(num_hours) print(num_minutes)

14. Complete the code on lines 3 and 4 so that it prints “2” and then “22”.

    sentence = "This is his wish." sentence2 = "His only wish is this." pos = ??.find("is") length = len(??) print(pos) print(length)

15. Complete the calculations on lines 2 and 4 and enter the items to be printed on line 5 to print the number of miles you can drive if you have a 10 gallon gas tank and are down to a quarter of a tank of gas and your car gets 32 miles per gallon. It should print: “You can go 80.0 miles.”

    tank_capacity = 10 num_gallons = ?? miles_per_gallon = 32 num_miles = ?? print()

16. Fix line 2 so that it prints “Hi” instead of “hi”.

    s1 = "hi" s1.capitalize() print(s1)

17. Write code to get the name of a color from the user using the input function. Next convert the name of the color to all lowercase letters and print it.

18. Write code to get the input of a user’s first name, then get only the first letter of their name, and print that letter lowercase.

19. Write the code below to calculate and print how many months it will take to save $200 if you earn $20 a week. It should print: “It will take 2.5 months to earn 200 if you make 20 dollars a week.”

20. Write code to print out the statement “Hi my name is Bob and I am 2” using only string methods or string slicing. You must get every part of the new string from the given strings.

    s1 = "hi" s2 = "My namesake is Bob, and he and I love to eat ham."

21. 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).

22. Write code that gets user input and print a string that states their input in all lowercase and gives the length of their string.