Due

Deliverables

• hw9.py

Specification

• list_average
• list_minimum
• list_maximum
• above_average

list_average

def list_average(number_list):

list_minimum

def list_minimum(number_list):

set a variable to hold the current minimum value to the highest possible value
for each entry in the list
    if the entry is smaller than the current minimum 
        set the current minimum to the entry

list_maximum

def list_maximum(number_list):

above_average

def above_average(number_list):

Suggestions

1. Create the script file and make it executable.
   Run the script.
   It should produce no output. Fix any errors you find.
2. Create a function header for each of the four functions.
   For the body of each function write pass.
   Copy the test code below to the bottom of your script.
   Run the script and fix any errors you find.
3. Remove the pass statement in list_average.
   Set the variable total to 0.
   Write a for loop that loops through the parameter.
   Inside the loop, add the value each number to total.
   Return total.
   Run the script and fix any errors you find.
4. Using the value of total and the length of the parameter (it is a list), change the return statement so it returns the average of the numbers in the list.
   Run the script and fix any errors you find.
5. Modify the return statement so it does not return a decimal.
   Run the script and fix any errors you find.
6. Remove the pass statement in list_minimum.
   Set the variable minimum to 100.
   Return minimum.
   Run the script and fix any errors you find.
7. Just before the return statement in list_minimum write a for loop for every value in the parameter.
   Inside the loop write an if statement that checks whether the value of each number is less than minimum.
   If the number is less, set minimum to this new value. Run the script and fix any errors you find.
8. Remove the pass statement in list_maximum.
   Set the variable maximum to 0.
   Return maximum.
   Run the script and fix any errors you find.
9. Just before the return statement in list_maximum write a for loop for every value in the parameter.
   Inside the loop write an if statement that checks whether the value of each number is greater than maximum.
   If the number is greater, set maximum to this new value.
   Run the script and fix any errors you find.
10. Remove the pass statement in above_average.
    Call the function list_average using the parameter as the argument, and store the returned value in the variable average.
    Return average.
    Run the script and fix any errors you find.
11. Before the return statement in above_average set the variable above_count to 0.
    Return the value of above_count.
    Run the script and fix any errors you find.
12. Just before the return statement in above_average write a for loop for every value in the parameter.
    Inside the loop write an if statement that checks whether the value of each number is greater than average.
    If it is, increment above_count.
    Run the script and fix any errors you find.

Test Code

numbers = [62, 60, 58, 50, 85, 93, 99, 77, 72, 74, 61, 68, 73, 65, 57]
print("numbers      :", numbers)
print("average      :", list_average(numbers))
print("minimum      :", list_minimum(numbers))
print("maximum      :", list_maximum(numbers))
print("above average:", above_average(numbers))

Testing

numbers      : [62, 60, 58, 50, 85, 93, 99, 77, 72, 74, 61, 68, 73, 65, 57]
average      : 70
minimum      : 50
maximum      : 99
above average: 7