tkinter
requests
json

# 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'  '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)
      OptionMenu(root, variable2, = 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()