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Its a python 3 based All in one Area Calculator.you can calculate Area of Rectangle,Area of Triangle and Area of Circle

Python, 75 lines
 ``` 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75``` ```# Python Version: 3 or newer # people using python 2,please replace tkinter with Tkinter # Author: Karim Khan (k4karim27@gmail.com) from tkinter import * from tkinter import ttk def calculate1(*args): try: value1 = float(width.get()) value2 = float(lenght.get()) area.set( value1 * value2 ) except ValueError: pass def calculate2(*args): try: value1 = float(width.get()) value2 = float(lenght.get()) area.set( 0.5*value1 * value2 ) except ValueError: pass def calculate3(*args): try: value3 = float(radius.get()) area.set( 3.14* value3 * value3 ) except ValueError: pass def reset(): width_entry.delete(0, END) lenght_entry.delete(0, END) radius_entry.delete(0, END) root = Tk() root.title("Area Calculator") root.geometry("290x120") mainframe = ttk.Frame(root, padding="5 5 15 15") mainframe.grid(column=0, row=0, sticky=(N, W, E, S)) mainframe.columnconfigure(0, weight=1) mainframe.rowconfigure(0, weight=1) width = StringVar() radius = StringVar() lenght = StringVar() area = StringVar() width_entry = ttk.Entry(mainframe, width=5, textvariable=width) width_entry.grid(column=1, row=1, sticky=(E)) lenght_entry = ttk.Entry(mainframe, width=5, textvariable=lenght) lenght_entry.grid(column=2, row=1, sticky=(E)) radius_entry = ttk.Entry(mainframe, width=5, textvariable=radius) radius_entry.grid(column=3, row=1, sticky=(E)) ttk.Label(mainframe,background="white", textvariable=area).grid(column=2, row=2, sticky=(W, E)) ttk.Button(mainframe, text="Circle", command=calculate3).grid(column=3, row=3, sticky=W) ttk.Button(mainframe, text="Triangle", command=calculate2).grid(column=1, row=3, sticky=E) ttk.Button(mainframe, text="Rectangle", command=calculate1).grid(column=2, row=3) ttk.Button(mainframe, text="Reset", command=reset).grid(column=3, row=2, sticky=E) ttk.Label(mainframe, text="Width").grid(column=1, row=1, sticky=W) ttk.Label(mainframe, text="Lenght").grid(column=2, row=1, sticky=W) ttk.Label(mainframe, text="Radius").grid(column=3, row=1, sticky=W) ttk.Label(mainframe, text="Area: ").grid(column=1, row=2, sticky=W) for child in mainframe.winfo_children(): child.grid_configure(padx=5, pady=5) width_entry.focus() lenght_entry.focus() root.bind('', calculate1) root.bind('', calculate2) root.mainloop() ```

#### 1 comment

james gerhard 7 years, 4 months ago

One more thing when using Python 2:

replace:

from tkinter import ttk

with:

import ttk

 Created by karim on Wed, 2 Jul 2014 (MIT)