python

''' REMEMBER YOU MUST COMPLETE ALL THREE OF THESE SCRIPTS!!!! NOT JUST THIS ONE!

This is the first main program for your homework assignment. Complete string_funcs.py FIRST. Then come back here.

On Mimir, run python3 p1.py to actually test your work.

Below, you MUST complete all functions as described in the "doc comment" below each function declaration.

''' # This line pulls in the functions from your other script so that they can be # used in this script. # NOTE: If you don't open VSCode in the same directory as your project, # VSCode might show this as an error and may report the function calls # as errors, as well...they are not...they will execute correctly. from string_funcs import *

def simple_iterate(value_string): ''' This one should be pretty straight forward. Based on a comma-separated string of values (any value), you simply want to print out a line with each of the values using your print_value_line() funciton such that items are prefixed with an item counter. Best described with an example: if you are passed a value_string of "Beef,Jerky,Rules", you'd print out:

ITEM 1 Beef ITEM 2 Jerky ITEM 3 Rules

You'll want to:

1) "split" up the `value_string` by the comma 2) iterate over that list (likely using a `for in range` since you will want a counter to print) 3) call print_value_line() with the appropriate text and value...text will be "ITEM n+1" (assuming n is the index) and value will be...well...the item value.

''' print_header('Simple Iterate') ### PUT YOUR CODE BELOW HERE ###

def adding_machine(numbers): ''' This is really just a more useful variation on the prior function. Here you receive a comma-separated string of integers. You need to add them up, but show your work as you go. This is actually also similar to a problem that you did a while back with lists. Only here you are splitting a string to get your list and then using your string functions to print it out in a prettier fashion.

Here again, the best way to describe this is with an example. If you are passed a `numbers` string of "2,4,8,16", your program should output:

0 plus 2 equals 2 2 plus 4 equals 6 6 plus 8 equals 14 14 plus 16 equals 30

So here, you'll want to:

1) Initialize a `subtotal` variable to 0 2) Split the numbers into a list and iterate over it 3) For each of the values in the list you'll: a) construct your "text" ... basically "subtotal plus value equals" b) convert the value to an int and add it to the current subtotal c) call print_value_line() with the text and the new subtotal ''' print_header('Adding Machine') ##### Your code goes below here #####

def shopping_cart(cart_list): ''' This is (unsurprisingly) the most complex, but also...not really. You'll get a LIST of comma-separated strings passed in as the `cart_list` parameter. Each of the strings in the `cart_list` will contain: * the description of an item * the price of an item * the quantity in your cart You want to show the items in the cart along with an extended price (qty * price). Then at the end you want to show the total in the cart.

Again an example is worth a lot:

Assume you are passed the following list: [ 'apple,1.39,2', 'orange,1.11,4', 'plum,0.89,1' ]

You want to display your shopping cart as follows:

apple (2 @ $1.39) 2.78 orange (4 @ $1.11) 4.44 plum (1 @ $0.89) 0.89 ------------------------------------------------------------ Grand Total 8.11

So finally here, you'll want to:

1) Initialize a `subtotal` variable to 0 2) For each of the items in `cart_list` you'll: a) split the item to get three parts (description, price and quantity) b) construct your "text" ... basically "description (quantity @ $price)" c) convert price to a float and quantity to an int d) calculate the extended price (just price * quantity) e) call print_float_line() with your text and your extended price f) add the extended price to your subtotal 3) After printing the items, call print_line('-') to print the line and 4) Call print_float_line one final time with the subtotal to display the "Grand Total"

As an OPTIONAL challenge, you might add a `print_currency_line()` function to string_funcs.py. In addition to printing the float value rounded to 2 decimal places, you could try to prefix the value with a "$" (without breaking the alignment).

''' print_header('Shopping Cart') ##### Your code goes below here #####

############################################################################### ### HERE IS THE "MAIN" PART OF THE SCRIPT... ### IT SIMPLY CALLS THE FUNCTIONS YOU COMPLETED ABOVE. ### NO NEED TO TOUCH ANY OF THE CODE BELOW, BUT DO LOOK AT THE EXPECTED ### OUTPUT TO MAKE SURE IT MATCHES MINE (OR AT LEAST IS CLOSE). ###############################################################################

simple_iterate("5,10,15,20,25") print() simple_iterate("John,Paul,George,Ringo,Bubba") print() adding_machine("5,5,5,5,5") print() adding_machine("192,168,0,1,10,0,0,1,172,16,0,1") print() cart = [ 'Yellow Sneaks,54.95,1', 'Orange Socks,12.99,2', 'Blue Pants,39.99,1', 'Green Shirt,17.95,4' ] shopping_cart(cart)

''' MY OUTPUT FOR THE ABOVE FUNCTION CALLS LOOKS AS FOLLOWS:

Simple Iterate ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ITEM 1 5 ITEM 2 10 ITEM 3 15 ITEM 4 20 ITEM 5 25

Simple Iterate ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ITEM 1 John ITEM 2 Paul ITEM 3 George ITEM 4 Ringo ITEM 5 Bubba

Adding Machine ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 0 plus 5 equals 5 5 plus 5 equals 10 10 plus 5 equals 15 15 plus 5 equals 20 20 plus 5 equals 25

Adding Machine ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 0 plus 192 equals: 192 192 plus 168 equals: 360 360 plus 0 equals: 360 360 plus 1 equals: 361 361 plus 10 equals: 371 371 plus 0 equals: 371 371 plus 0 equals: 371 371 plus 1 equals: 372 372 plus 172 equals: 544 544 plus 16 equals: 560 560 plus 0 equals: 560 560 plus 1 equals: 561

Shopping Cart ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Yellow Sneaks (1 @ $54.95) 54.95 Orange Socks (2 @ $12.99) 25.98 Blue Pants (1 @ $39.99) 39.99 Green Shirt (4 @ $17.95) 71.80 ------------------------------------------------------------ Grand Total 192.72

'''