Real time currency convertor using Tkinter.py

# import all functions from the tkinter 
from tkinter import *

# Create a GUI window 
root = Tk() 

# create a global variables 
variable1 = StringVar(root) 
variable2 = StringVar(root) 

# initialise the variables 
variable1.set("currency") 
variable2.set("currency") 

	
# Function to perform real time conversion 
# from one currency to another currency 
def RealTimeCurrencyConversion(): 

	# importing required libraries 
	import requests, json 

	# currency code 
	from_currency = variable1.get() 
	to_currency = variable2.get() 

	# enter your api key here 
	api_key = "Your_Api_Key"
	
	# base_url variable store base url 
	base_url = r"https://www.alphavantage.co/query?function = CURRENCY_EXCHANGE_RATE"

	# main_url variable store complete url 
	main_url = base_url + "&from_currency =" + from_currency +
		"&to_currency =" + to_currency + "&apikey =" + api_key 

	# get method of requests module 
	# return response object 
	req_ob = requests.get(main_url) 

	# json method return json format 
	# data into python dictionary data type. 
	
	# result contains list of nested dictionaries 
	result = req_ob.json() 

	# parsing the required information 
	Exchange_Rate = float(result["Realtime Currency Exchange Rate"] 
											['5. Exchange Rate']) 

	# get method of Entry widget 
	# returns current text as a 
	# string from text entry box. 
	amount = float(Amount1_field.get()) 

	# calculation for the conversion 
	new_amount = round(amount * Exchange_Rate, 3) 

	# insert method inserting the 
	# value in the text entry box. 
	Amount2_field.insert(0, str(new_amount)) 


# Function for clearing the Entry field 
def clear_all() : 
	Amount1_field.delete(0, END) 
	Amount2_field.delete(0, END) 
	

# Driver code 
if __name__ == "__main__" : 

	# Set the background colour of GUI window 
	root.configure(background = 'light green') 
	
	# Set the configuration of GUI window (WidthxHeight) 
	root.geometry("400x175") 
	
	# Create welcome to Real Time Currency Convertor label 
	headlabel = Label(root, text = 'welcome to Real Time Currency Convertor', 
					fg = 'black', bg = "red") 

	# Create a "Amount :" label 
	label1 = Label(root, text = "Amount :", 
				fg = 'black', bg = 'dark green') 
	
	# Create a "From Currency :" label 
	label2 = Label(root, text = "From Currency", 
				fg = 'black', bg = 'dark green') 
	
	# Create a "To Currency: " label 
	label3 = Label(root, text = "To Currency :", 
				fg = 'black', bg = 'dark green') 

	# Create a "Converted Amount :" label 
	label4 = Label(root, text = "Converted Amount :", 
				fg = 'black', bg = 'dark green') 

	# grid method is used for placing 
	# the widgets at respective positions 
	# in table like structure . 
	headlabel.grid(row = 0, column = 1) 
	label1.grid(row = 1, column = 0) 
	label2.grid(row = 2, column = 0) 
	label3.grid(row = 3, column = 0) 
	label4.grid(row = 5, column = 0) 
	
	# Create a text entry box 
	# for filling or typing the information. 
	Amount1_field = Entry(root) 
	Amount2_field = Entry(root) 
	
	# ipadx keyword argument set width of entry space. 
	Amount1_field.grid(row = 1, column = 1, ipadx ="25") 
	Amount2_field.grid(row = 5, column = 1, ipadx ="25") 

	# list of currency codes 
	CurrenyCode_list = ["INR", "USD", "CAD", "CNY", "DKK", "EUR"] 

	# create a drop down menu using OptionMenu function 
	# which takes window name, variable and choices as 
	# an argument. use * befor the name of the list, 
	# to unpack the values 
	FromCurrency_option = OptionMenu(root, variable1, *CurrenyCode_list) 
	ToCurrency_option = OptionMenu(root, variable2, *CurrenyCode_list) 
	
	FromCurrency_option.grid(row = 2, column = 1, ipadx = 10) 
	ToCurrency_option.grid(row = 3, column = 1, ipadx = 10) 
	
	# Create a Convert Button and attached 
	# with RealTimeCurrencyExchangeRate function 
	button1 = Button(root, text = "Convert", bg = "red", fg = "black", 
								command = RealTimeCurrencyConversion) 
	
	button1.grid(row = 4, column = 1) 

	# Create a Clear Button and attached 
	# with delete function 
	button2 = Button(root, text = "Clear", bg = "red", 
					fg = "black", command = clear_all) 
	button2.grid(row = 6, column = 1) 
	
	# Start the GUI 
	root.mainloop()