circumference.py

circumference.py

# Created by: Mr. Coxall
# Created on: Sep 2018
# Created for: ICS3U
# This program calculates the circumference of a circle,
#   when you give it the radius

import ui

def calculate_touch_up_inside(sender):
    # calculate circumference
    
    # constants
    PI = 3.14
    
    # input
    radius = int(view['radius_textbox'].text)
    
    # process
    circumference = 2 * PI * radius
    
    # output
    view['answer_label'].text = 'The circumference is: ' + str(circumference) + ' cm'

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

circumference.pyui

[
  {
    "selected" : false,
    "frame" : "{{0, 0}, {1024, 768}}",
    "class" : "View",
    "nodes" : [
      {
        "selected" : false,
        "frame" : "{{48, 51}, {350, 32}}",
        "class" : "Label",
        "nodes" : [

        ],
        "attributes" : {
          "font_name" : "<System>",
          "frame" : "{{437, 368}, {150, 32}}",
          "uuid" : "F703535A-A8E3-4DAE-AAB6-CA05FA9DD140",
          "class" : "Label",
          "alignment" : "left",
          "text" : "Enter the radius of the circle.",
          "name" : "instruction_label",
          "font_size" : 18
        }
      },
      {
        "selected" : true,
        "frame" : "{{198, 115}, {200, 32}}",
        "class" : "TextField",
        "nodes" : [

        ],
        "attributes" : {
          "placeholder" : "Place radius here.",
          "font_name" : "<System>",
          "frame" : "{{412, 368}, {200, 32}}",
          "spellchecking_type" : "default",
          "class" : "TextField",
          "uuid" : "CAC02D03-6C20-4BFC-B666-949D915726A0",
          "alignment" : "left",
          "autocorrection_type" : "default",
          "name" : "radius_textbox",
          "font_size" : 17
        }
      },
      {
        "selected" : false,
        "frame" : "{{48, 115}, {133, 32}}",
        "class" : "Label",
        "nodes" : [

        ],
        "attributes" : {
          "font_name" : "<System>",
          "frame" : "{{437, 368}, {150, 32}}",
          "uuid" : "591FAAEA-97F4-452E-9448-AE039A8A87C5",
          "class" : "Label",
          "alignment" : "left",
          "text" : "Radius:",
          "name" : "radius_label",
          "font_size" : 18
        }
      },
      {
        "selected" : false,
        "frame" : "{{48, 176}, {80, 32}}",
        "class" : "Button",
        "nodes" : [

        ],
        "attributes" : {
          "action" : "calculate_touch_up_inside",
          "frame" : "{{472, 368}, {80, 32}}",
          "title" : "Calculate",
          "uuid" : "4BC43793-D0CC-444F-9A00-D25A592DECD9",
          "class" : "Button",
          "name" : "calculate_button",
          "font_size" : 15
        }
      },
      {
        "selected" : false,
        "frame" : "{{48, 241}, {350, 32}}",
        "class" : "Label",
        "nodes" : [

        ],
        "attributes" : {
          "font_name" : "<System>",
          "frame" : "{{437, 368}, {150, 32}}",
          "uuid" : "FA68DC6F-753A-41C8-BA16-FD3D7DC537E4",
          "class" : "Label",
          "alignment" : "left",
          "text" : "The circumference 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" : ""
    }
  }
]