4.13. Write Code Questions

1. Fix the errors in the code, and change it to use only one if statement. The code should print “The number is 5” when the number is 5, and should print “The number is NOT 5” when it is not.

   x = 5 if x == 5: print("The number is 5") if x != 5: print("The number is NOT 5")

   Fix the errors in the code, and change it to use only one if statement. The code should print “The number is 5” when the number is 5, and should print “The number is NOT 5” when it is not.

   # Initialize x and set condition for when x = 5 x = 5 if x == 5: # Indent the body of if statement print("The number is 5") # Use else for the secondary condition else: # Indent the body of else statement print("The number is NOT 5")

2. Complete the conditional below so the word “Hi” is printed if x does not equal 3 and “Hello” is printed otherwise.

   x = 4 if x

3. Complete the pay computation to give the employee 1.5 times the hourly rate for hours worked above 40 hours, if the regular pay rate is $10 an hour. Then set grossPay equal to the amount an employee would be paid for working 45 hours.

   hours = 45 rate = 10 overtimeRate = #your code here grossPay = 0 if hours #your code here grossPay = hours * rate else: overTime = #your code here grossPay = #your code here print(grossPay) ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(grossPay, 475.0) myTests().main()

   Complete the pay computation to give the employee 1.5 times the hourly rate for hours worked above 40 hours, if the regular pay rate is $10 an hour. Then set grossPay equal to the amount an employee would be paid for working 45 hours.

   # Initializing variables hours = 45 rate = 10 # overtimeRate is 1.5 the rate amount overtimeRate = rate * 1.5 grossPay = 0 # Begin conditional to see if hours are within regular pay if hours <= 40: #if within 40 hours, pay will be hours * rate grossPay = hours * rate # Else statement for when hours are greater than 40 else: # Create variable for overtime hours overTime = hours % 40 # Pay will equal the regular rate for 40 hours, # plus the overtime rate for the extra hours grossPay = (rate * 40) + (overTime * overtimeRate) # Print the final pay print(grossPay)

4. Rewrite your pay program using try and except so that your program handles non-numeric input gracefully by printing a message and exiting the program. The following shows two executions of the program:

   Enter Hours: 20
   Enter Rate: nine
   Error, please enter numeric input
   

   Enter Hours: forty
   Error, please enter numeric input
   

5. Write the code to calculate and print the cost of a 14 mile cab ride. If the distance traveled is less than or equal to 12 miles the cost is $2.00 a mile, and if the distance traveled is more than 12 miles the cost is $1.50 a mile. Assign the final cost to the variable total.

   distance = 14 ==== from unittest.gui import TestCaseGui class myTests(TestCaseGui): def testOne(self): self.assertEqual(total, 21.0) myTests().main()

   Write the code to calculate and print the cost of a 14 mile cab ride. If the distance traveled is less than or equal to 12 miles the cost is $2.00 a mile, and if the distance traveled is more than 12 miles the cost is $1.50 a mile. Assign the final cost to the variable total.

   # distance variable given distance = 14 # Set conditions if distance <= 12: # rate will be 2 if the distance is less than or equal to 12 rate = 2.00 if distance > 12: # rate will be 1.5 if the distance is greater than 12 rate = 1.50 # Calculate trip cost total = distance * rate # Print final statement print("Total cost of trip: " + str(total))

6. Write a program to prompt for a score between 0.0 and 1.0. If the score is out of range, print an error message. If the score is between 0.0 and 1.0, print a grade using the following table:

    Score   Grade
   >= 0.9     A
   >= 0.8     B
   >= 0.7     C
   >= 0.6     D
    < 0.6     F
   

   Enter score: 0.95
   A
   

7. Fix the example such that the cost of frozen yogurt is 0 if you pour exactly 1 lb. in your cup.

   weight = 0.5 if weight < 1: price = 1.45 if weight > 1: price = 1.15 total = weight * price print(weight) print(price) print(total)

   Fix the example such that the cost of frozen yogurt is 0 if you pour exactly 1 lb. in your cup.

   # Initial weight is given weight = 0.5 # Set conditionals if weight < 1: # Set price to 1.45 when weight is less than 1 price = 1.45 # Create condition for when weight is 1 if weight == 1: # Set price to 0 when weight is 1 price = 0 if weight > 1: # Set price to 1.15 when weight is greater than 1 price = 1.15 # calculate total using newly assigned variables total = weight * price # Print variables print(weight) print(price) print(total)

8. Write a procedure that takes 2 ints, total price, and amount in wallet. Print “You have enough money” if the difference between the wallet and price is 0 or greater; otherwise, print “Get more money”.

9. 3 criteria must be taken into account to identify leap years:

   • The year is evenly divisible by 4;

   • If the year can be evenly divided by 100, it is NOT a leap year, unless;

   • The year is also evenly divisible by 400. Then it is a leap year.

   Write a program that takes a year as a parameter and sets leapYear equal to True if the year is a leap year, False otherwise. (use a few different years to test your work)

   3 criteria must be taken into account to identify leap years:

   • The year is evenly divisible by 4;

   • If the year can be evenly divided by 100, it is NOT a leap year, unless;

   • The year is also evenly divisible by 400. Then it is a leap year.

   Write a program that takes a year as a parameter and sets leapYear equal to True if the year is a leap year, False otherwise. (use a few different years to test your work)

   year = 1900 #TEST WITH ANY YEAR # Initializing leapYear to False since most years are not leap years leapYear = False # Use modulus to see if the year is divisible by 4 if year % 4 == 0: # If divisible by 4, use modulus to see if divisible by 100 if year % 100 == 0: # if divisible by 4 and 100, use modulus to see if divisible by 400 if year % 400 == 0: # if divisible by 4, 100, and 400 it is a leap year leapYear = True else: # if divisible by 4 and not 100 it is a leap year leapYear = True print(leapYear) ''' Since leapYear started as False, we do not need to reset it to False for the instances that the year is not a leap year ''' # ANOTHER OPTION year = 1900 leapYear = False if year % 400 == 0: leapYear = True elif year % 4 == 0 and year % 100 != 0: leapYear = True print(leapYear)

10. Finish the following code. It first sets n to a number input by a user. Convert the number from a string to an integer and set result to True if the number is an even number (evenly divisible by two) and False if it is odd. Note: use the modulo operator.

    n = input("Enter a number")

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