pizza.py

pizza.py

# Created by: Mr. Coxall
# Created on: Sep 2018
# Created for: ICS3U
# This program calculates the cost of a pizza, give the diameter

import ui

def calculate_button_touch_up_inside(sender):
    # calculate circumference
    
    # constants
    PI = 3.14
    LABOUR_COST = 0.75
    RENT_COST = 1.00
    MATERIAL_COST = 0.50
    HST = 0.13
    
    # input
    diameter = float(view['diameter_textbox'].text)
    
    # process
    sub_total = LABOUR_COST + RENT_COST + (MATERIAL_COST * diameter) 
    cost = sub_total + (sub_total * HST)
    
    # output
    # got currency format from here:
    #   http://stackoverflow.com/questions/21208376/converting-float-to-dollars-and-cents
    view['answer_label'].text = 'The cost is: ' + '${:,.2f}'.format(cost)

view = ui.load_view()
view.present('full_screen')

pizza.pyui

[
  {
    "selected" : false,
    "frame" : "{{0, 0}, {1024, 768}}",
    "class" : "View",
    "nodes" : [
      {
        "selected" : true,
        "frame" : "{{47, 47}, {354, 32}}",
        "class" : "Label",
        "nodes" : [

        ],
        "attributes" : {
          "font_name" : "<System>",
          "frame" : "{{437, 368}, {150, 32}}",
          "uuid" : "DE68642C-9912-4E59-B755-7A5208C521C0",
          "class" : "Label",
          "alignment" : "left",
          "text" : "Enter the diameter of pizza, in inches.",
          "name" : "instructions_label",
          "font_size" : 18
        }
      },
      {
        "selected" : false,
        "frame" : "{{47, 111}, {200, 32}}",
        "class" : "TextField",
        "nodes" : [

        ],
        "attributes" : {
          "placeholder" : "Diameter in inches",
          "font_name" : "<System>",
          "frame" : "{{412, 368}, {200, 32}}",
          "spellchecking_type" : "default",
          "class" : "TextField",
          "uuid" : "8F350EFE-0CC4-4D76-B146-938500D9E36B",
          "alignment" : "left",
          "autocorrection_type" : "default",
          "name" : "diameter_textbox",
          "font_size" : 17
        }
      },
      {
        "selected" : false,
        "frame" : "{{321, 111}, {80, 32}}",
        "class" : "Button",
        "nodes" : [

        ],
        "attributes" : {
          "action" : "calculate_button_touch_up_inside",
          "frame" : "{{472, 368}, {80, 32}}",
          "title" : "Calculate",
          "uuid" : "31D068E8-13DD-4E7C-AED4-46EBE6AC806D",
          "class" : "Button",
          "name" : "calculate_button",
          "font_size" : 15
        }
      },
      {
        "selected" : false,
        "frame" : "{{47, 175}, {354, 32}}",
        "class" : "Label",
        "nodes" : [

        ],
        "attributes" : {
          "font_name" : "<System>",
          "frame" : "{{437, 368}, {150, 32}}",
          "uuid" : "CDEFDCA8-F3C9-4D5B-8D0D-E5AE96691579",
          "class" : "Label",
          "alignment" : "left",
          "text" : "The cost is: ",
          "name" : "answer_label",
          "font_size" : 18
        }
      }
    ],
    "attributes" : {
      "enabled" : true,
      "background_color" : "RGBA(1.000000,1.000000,1.000000,1.000000)",
      "tint_color" : "RGBA(0.000000,0.478000,1.000000,1.000000)",
      "border_color" : "RGBA(0.000000,0.000000,0.000000,1.000000)",
      "flex" : ""
    }
  }
]