How to make a Unit Converter GUI | Python | Volume, Length | By The Art of Programming| #2|

Hi Guys !!!
I have created a Unit Converter using tkinter module in python. This program converts 2 value - Volume, Length.

Link to The background music

Hope you like it!!

[theartofprogramming]

Here's the code
# Importing the modules
import tkinter as tk
from tkinter.constants import UNITS
import tkinter.font as font
from functools import partial
from tkinter import StringVar, messagebox
from tkinter import ttk

# Creating the window
window =tk.Tk()
window.geometry('500x600')
window.title('Unit Converter')
window.configure(bg = 'peach puff2')

# Creating the fonts
font1 = font.Font(family = 'helvetica', size = '30')
font2 = font.Font(family = 'helvetica', size = '10')
font3 = font.Font(family = 'helvetica', size = '20')

# The textvariables
number_from = StringVar()

# All the functions
# Fromfunc function
def fromfunc(event):
global result_from
result_from = event.widget.get()

# Tofunc function
def tofunc(event):
global result_to
result_to = event.widget.get()


# The answer function
def answer(n1):
num1 = n1.get()
try:
number1 = int(num1)
except:
messagebox.showerror('Error', 'Term not recognised')

# Length
if result_from == 'Cubic meters' and result_to == 'Cubic meters':
calculate = number1
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic meters' and result_to == 'Cubic foot':
calculate = number1*35.3147
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic meters' and result_to == 'Liters':
calculate = number1*1000
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic meters' and result_to == 'Gallons':
calculate = number1*264.172
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic meters' and result_to == 'Cubic centimeters':
calculate =
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic foot' and result_to == 'Cubic meters':
calculate = number1*0.02831
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic foot' and result_to == 'Cubic foot':
calculate = number1
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic foot' and result_to == 'Liters':
calculate = number1*28.31679
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic foot' and result_to == 'Gallons':
calculate = number1*7.4805
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic foot' and result_to == 'Cubic centimeters':
calculate = number1*28316.8
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Liters' and result_to == 'Cubic meters':
calculate = number1*0.000999
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Liters' and result_to == 'Cubic foot':
calculate = number1*0.0353146
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Liters' and result_to == 'Liters':
calculate = number1
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Liters' and result_to == 'Gallons':
calculate = number1*0.26417
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Liters' and result_to == 'Cubic centimeters':
calculate = number1*1000
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Gallons' and result_to == 'Cubic meters':
calculate = number1*0.003785
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Gallons' and result_to == 'Cubic foot':
calculate = number1*0.13368
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Gallons' and result_to == 'Liters':
calculate = number1*3.7854
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Gallons' and result_to == 'Gallons':
calculate = number1
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Gallons' and result_to == 'Cubic centimeters':
calculate = number1*3786.41
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic centimeters' and result_to == 'Cubic meters':
calculate =
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic centimeters' and result_to == 'Cubic foot':
calculate = number1*3.53146
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic centimeters' and result_to == 'Liters':
calculate = number1*0.000999
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic centimeters' and result_to == 'Cubic meters':
calculate = number1*9.9999
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic centimeters' and result_to == 'Liters':
calculate =
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic centimeters' and result_to == 'Gallons':
calculate = number1*0.00026417
result.cget('text')
result.configure(text = (calculate, result_to))

elif result_from == 'Cubic centimeters' and result_to == 'Cubic centimeters':
calculate = number1
result.cget('text')
result.configure(text = (calculate, result_to))

# Selected function
def selected(event):
unit = event.widget.get()
if unit == 'Volume':
fromdd['values'] = ('Cubic meters',
'Cubic foot',
'Liters',
'Gallons',
'Cubic centimeters')

todd['values'] = ('Cubic meters',
'Cubic foot',
'Liters',
'Gallons',
'Cubic centimeters')

elif unit == 'Length':
fromdd['values'] = ('Millimeters',
'Centimeters',
'Decimeters',
'Meters',
'Kilometers')

todd['values'] = ('Millimeters',
'Centimeters',
'Decimeters',
'Meters',
'Kilometers')

elif unit == 'Mass':
fromdd['values'] = ('Milligrams',
'Centigrams',
'Grams',
'Decigrams',
'Kilograms')

todd['values'] = ('Milligrams',
'Centigrams',
'Grams',
'Decigrams',
'Kilograms')



# Creating the unit converter label
main = tk.Label(window, text = 'Unit Converter', bg = 'peach puff2', fg = 'blue')
main['font'] = font1
main.place(relx = '0.48', rely = '0.1', anchor = 'center')

# Creating the unit label
unit = tk.Label(window, text = 'Unit -:', bg = 'peach puff2')
unit['font'] = font2
unit.place(relx = '0.25', rely = '0.28')

# Creating the main combobox
n = StringVar()
unitdd = ttk.Combobox(window, width = '35', textvariable = n)

# Values
unitdd['values'] = ('Volume',
'Length',
'Mass')

unitdd.place(relx = '0.57', rely = '0.3', anchor = 'center')
unitdd.current()
unitdd.bind('<<ComboboxSelected>>', selected)

# Creating the from label
label_from = tk.Label(window, text = 'From -:', bg = 'peach puff2')
label_from['font'] = font2
label_from.place(relx = '0.238', rely = '0.37')

# Creating the fromdd
f = StringVar()
fromdd = ttk.Combobox(window, width = '35', textvariable = f)

fromdd.place(relx = '0.57', rely = '0.39', anchor = 'center')
fromdd.current()
fromdd.bind('<<ComboboxSelected>>', fromfunc)

# Creating the num_from entry
num_from = tk.Entry(window, width = 10, textvariable = number_from)
num_from.place(relx = '0.82', rely = '0.37')

answer = partial(answer, num_from)

# Creating the to label
to = tk.Label(window, text = 'To -:', bg = 'peach puff2')
to['font'] = font2
to.place(relx = '0.268', rely = '0.45')

# Creating the to drop down
t = StringVar()
todd = ttk.Combobox(window, width = 35, textvariable = t)

todd.place(relx = '0.57', rely = '0.47', anchor = 'center')
todd.current()
todd.bind('<<ComboboxSelected>>', tofunc)

# Creting the result label
result = tk.Label(window, text = '', bg= 'white', width = 20)
result['font'] = font3
result.place(relx = '0.21', rely = '0.6')

# Creating the get answer button
get_answer = tk.Button(window, text = 'Get Answer', bg = 'cyan2', command = answer)
get_answer['font'] = font2
get_answer.place(relx = '0.46', rely = '0.7')

# Creating the art label
art = tk.Label(window, text = 'The Art Of Programming', bg= 'peach puff2', fg = 'blue')
art['font'] = font3
art.place(relx = '0.21', rely = '0.9')


# Creating the mainloop
window.mainloop()