1+ # import libraries
2+ from tkinter import *
3+ 4+ # initialized window
5+ root = Tk ()
6+ root .geometry ('480x350' )
7+ root .resizable (0 ,0 )
8+ root .title ('Weight Converter' )
9+ 10+ # defining the function for converting weights
11+ def WeightConv ():
12+ 13+ # making textbox user-friendly that is editable
14+ t1 .configure (state = 'normal' )
15+ t1 .delete ("1.0" , END )
16+ 17+ t2 .configure (state = 'normal' )
18+ t2 .delete ("1.0" , END )
19+ 20+ t3 .configure (state = 'normal' )
21+ t3 .delete ("1.0" , END )
22+ 23+ t4 .configure (state = 'normal' )
24+ t4 .delete ("1.0" , END )
25+ 26+ t5 .configure (state = 'normal' )
27+ t5 .delete ("1.0" , END )
28+ 29+ t6 .configure (state = 'normal' )
30+ t6 .delete ("1.0" , END )
31+ 32+ # exception handling
33+ try :
34+ kilograms = float (e1 .get ())
35+ 36+ # insert the output in textboxes correct upto 2 places after decimal
37+ t1 .insert (END , "%.2f Carat" % (kilograms * 5000 ))
38+ t2 .insert (END , "%.2f Gram" % (kilograms * 1000 ))
39+ t3 .insert (END , "%.2f Ounce" % (kilograms * 35.274 ))
40+ t4 .insert (END , "%.2f Pound" % (kilograms * 2.20462 ))
41+ t5 .insert (END , "%.2f Quintal" % (kilograms * 0.01 ))
42+ t6 .insert (END , "%.2f Tonne" % (kilograms * 0.001 ))
43+ 44+ # if blank or invalid input is given then exception is thrown
45+ except ValueError :
46+ t1 .insert (END , " ~ Invalid input ~ " )
47+ t2 .insert (END , " ~ Invalid input ~ " )
48+ t3 .insert (END , " ~ Invalid input ~ " )
49+ t4 .insert (END , " ~ Invalid input ~ " )
50+ t5 .insert (END , " ~ Invalid input ~ " )
51+ t6 .insert (END , " ~ Invalid input ~ " )
52+ 53+ # making textbox uneditable
54+ t1 .configure (state = 'disabled' )
55+ t2 .configure (state = 'disabled' )
56+ t3 .configure (state = 'disabled' )
57+ t4 .configure (state = 'disabled' )
58+ t5 .configure (state = 'disabled' )
59+ t6 .configure (state = 'disabled' )
60+ 61+ # creating a label to display
62+ l1 = Label (root , text = "Enter the weight in kilograms (kg) : " )
63+ l1 .grid (row = 1 , column = 1 ,columnspan = 2 )
64+ value = StringVar ()
65+ 66+ # creating a entry box for input
67+ e1 = Entry (root , textvariable = value )
68+ e1 .grid (row = 1 , column = 3 ,columnspan = 2 )
69+ 70+ # create a button for conversion
71+ button = Button (root , text = "Convert" , command = WeightConv )
72+ button .grid (row = 2 , column = 2 , columnspan = 2 , rowspan = 2 )
73+ 74+ # make labels for textbox
75+ t1l1 = Label (root , text = "kg to ct : " )
76+ t1l1 .grid (row = 4 , column = 1 , columnspan = 1 )
77+ 78+ t2l2 = Label (root , text = "kg to g : " )
79+ t2l2 .grid (row = 5 , column = 1 , columnspan = 1 )
80+ 81+ t3l3 = Label (root , text = "kg to oz : " )
82+ t3l3 .grid (row = 6 , column = 1 , columnspan = 1 )
83+ 84+ t4l4 = Label (root , text = "kg to lb : " )
85+ t4l4 .grid (row = 7 , column = 1 , columnspan = 1 )
86+ 87+ t5l5 = Label (root , text = "kg to q : " )
88+ t5l5 .grid (row = 8 , column = 1 , columnspan = 1 )
89+ 90+ t6l6 = Label (root , text = "kg to t : " )
91+ t6l6 .grid (row = 9 , column = 1 , columnspan = 1 )
92+ 93+ # creating textbox and defining grid to show output
94+ t1 = Text (root , height = 1 , width = 20 )
95+ t1 .grid (row = 4 , column = 2 , columnspan = 2 )
96+ 97+ t2 = Text (root , height = 1 , width = 20 )
98+ t2 .grid (row = 5 , column = 2 , columnspan = 2 )
99+ 100+ t3 = Text (root , height = 1 , width = 20 )
101+ t3 .grid (row = 6 , column = 2 , columnspan = 2 )
102+ 103+ t4 = Text (root , height = 1 , width = 20 )
104+ t4 .grid (row = 7 , column = 2 , columnspan = 2 )
105+ 106+ t5 = Text (root , height = 1 , width = 20 )
107+ t5 .grid (row = 8 , column = 2 , columnspan = 2 )
108+ 109+ t6 = Text (root , height = 1 , width = 20 )
110+ t6 .grid (row = 9 , column = 2 , columnspan = 2 )
111+ 112+ # making blank spaces in GUI
113+ for r in range (10 ):
114+ root .grid_rowconfigure (r ,minsize = 30 )
115+ for c in range (6 ):
116+ root .grid_columnconfigure (c ,minsize = 50 )
117+ 118+ # infinite loop to run program
119+ root .mainloop ()
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