how to create simple currency converting app using python

Posted by Suraj Singh on April 07, 2017 · 8 mins read
hello hackers,



                   Today, I am Going To Show You How To Create Simple Currency Converting App Using Python?.


In Today's Time,

                              Currency Converting Apps Are Very Useful Because, with the help of this app, we can do currency conversion calculation very easily and fastly. As We Already Know Python Programming Language Features Like Cross-Platform Support, Very Easy, Wide Range Of Library Availability And Etc Etc.

Let's Discuss Some Queries About This App.

Q 1. Which GUI library is suitable for This App?


Ans. In This Tutorial, I am using Python Tkinter Module Because Of its Easy Structured Programming and Built-In Availability.

If You are also new in Python Tkinter Module.

Then I Think Below Useful Links Can Blow Your Mind.




        Now, Let's Focus On Our Main Topic.


        To do currency conversion calculation, we will use some basic mathematics formulas.
        like

        For Currency Conversion Formula,


                   converted_curency  =  currency_rate * currency_for_conversion


        As according to this formula first, we will takes currency rate price as input from the user, and then multiply currency rate price with provided currency for conversion.

        Simple! hahaha

        Now, we Just Need to create a GUI Apps That Can Do This Simple Calculation Very Easily.

        Here, In my codes I Am Using

        "
        # Import Module
        try:
         import Tkinter
         import ttk
        except:
         import tkinter as Tkinter
         import tkinter.ttk as ttk

        "
        method to import tkinter module. Why? Because Tkinter Library Name in Python 2.x is "Tkinter" And "tkinter" in Python 3.x. So, To Make My Code Compatible With Both I Am Using try and except method.

        1. Python Simple Currency Converting App


         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
        76
        77
        78
        #!/usr/bin/python
        # -*- coding: utf-8 -*-
        #
        #  
        #  Suraj
        #  surajsinghbisht054@gmail.com
        #  www.bitforestinfo.com
        #
        # 
        #
        #
        ##################################################
        ######## Please Don't Remove Author Name #########
        ############### Thanks ###########################
        ##################################################
        #
        #
        # Import Module
        try:
         import Tkinter
         import ttk
        except:
         import tkinter as Tkinter
         import tkinter.ttk as ttk

        # Creating Main Class
        class converter(Tkinter.Tk):
         def __init__(self, *args, **kwargs):
          Tkinter.Tk.__init__(self, *args, **kwargs)
          self['padx']=50
          self['pady']=50
          self['bg']="powder blue"
          self.create_variable_stores()
          self.create_dashboard()
          self.create_conversion_mechanizism()

         # Event Function
         def convert_base_to_currency(self, *args, **kwargs):
          try:
           obj = self.converting_currency.get() * self.Currency_rates.get()
           self.converted_currency.set(obj)
          except:
           pass
          return

         # Creating Main Conversion Mechanizm
         def create_conversion_mechanizism(self):
          ttk.Entry(self, textvariable=self.converting_currency, font=("arial 30 bold")).grid(row=4, column=1)
          ttk.Entry(self, textvariable=self.converted_currency, font=("arial 30 bold")).grid(row=4, column=3)
          return

         # Creating Main DashBoard
         def create_dashboard(self):
          ttk.Label(self, text=" Base Currency ", font=("arial 30 bold")).grid(row=1, column=1, padx=10, pady=10)
          ttk.Separator(self, orient="vertical").grid(row=1, column=2,sticky="ns", padx=10, pady=10)
          ttk.Label(self, text=" Currency ", font=("arial 30 bold")).grid(row=1, column=3, padx=10, pady=10)
          ttk.Label(self, text=" $ 1  = ", font=("arial 30 bold")).grid(row=2, column=1, padx=10, pady=10)
          ttk.Entry(self, textvariable=self.Currency_rates, font=("arial 30 bold")).grid(row=2, column=3, padx=10, pady=10)
          return

         # Creating Variables
         def create_variable_stores(self):
          self.Currency_rates = Tkinter.DoubleVar()
          self.converted_currency = Tkinter.DoubleVar()
          self.converting_currency = Tkinter.DoubleVar()
          # Adding Auto Trace Variable Event
          self.converting_currency.trace_variable("w", self.convert_base_to_currency)
          

        # Main Function
        def main():
         root = converter(className = " Simple Currency Converter")
         root.mainloop()
         return

        # Main Trigger
        if __name__ == '__main__':
         main()

        Done!


        As  you can see, i tried my best to write these very easy to understand and cross platform supported.

        If You really Like This tutorial then you can also download this example from my GitHub Repository. Click Here


        if you like my blog,
        subscribe, comment and follow us.

        have a wonderful day!


        ← Previous Post Next Post →