Python is a very versatile programming language. Python is being used in almost each mainstream technology and one can develop literally any application with it. Let’s see a Python program to convert the currency of one country to that of another country. To use this service, one must need the API key, which can be get from here. We will use fixer API to get the live conversion rates and convert the corresponding amount.
Case 1
Modules needed:
1.1: requests: This module does not build in with python. To install it type the below command in the terminal or cmd.
pip install requests
Below is the implementation:
Python3
# Python program to convert the currency# of one country to that of another country# Import the modules neededimport requestsclass Currency_convertor: # empty dict to store the conversion rates rates = {} def __init__(self, url): data = requests.get(url).json() # Extracting only the rates from the json data self.rates = data["rates"] # function to do a simple cross multiplication between # the amount and the conversion rates def convert(self, from_currency, to_currency, amount): initial_amount = amount if from_currency != 'EUR' : amount = amount / self.rates[from_currency] # limiting the precision to 2 decimal places amount = round(amount * self.rates[to_currency], 2) print('{} {} = {} {}'.format(initial_amount, from_currency, amount, to_currency))# Driver codeif __name__ == "__main__": # YOUR_ACCESS_KEY = 'GET YOUR ACCESS KEY FROM fixer.io' c = Currency_convertor(url) from_country = input("From Country: ") to_country = input("TO Country: ") amount = int(input("Amount: ")) c.convert(from_country, to_country, amount) |
Input :
From Country: USD TO Country: INR Amount: 1
Output :
1 USD = 70.69 INR
Case 2
Modules needed:
2.1: tkinter: It facilities Graphical User interfaces (GUIs).
pip install tkinter
2.2: forex_python: It is a Free Foreign exchange rate and currency conversion library.
pip install forex_python
Implementation:
Python
#pip install tkinterimport tkinter as tk from tkinter import *import tkinter.messagebox#GUIroot = tk.Tk()root.title("Currency converter:GeeksForGeeks")Tops = Frame(root, bg = '#e6e5e5', pady=2, width=1850, height=100, relief="ridge")Tops.grid(row=0, column=0)headlabel = tk.Label(Tops, font=('lato black', 19, 'bold'), text='Currency converter :GeeksForGeeks ', bg='#e6e5e5', fg='black')headlabel.grid(row=1, column=0, sticky=W)variable1 = tk.StringVar(root)variable2 = tk.StringVar(root)variable1.set("currency")variable2.set("currency")#Function To For Real Time Currency Conversiondef RealTimeCurrencyConversion(): from forex_python.converter import CurrencyRates c = CurrencyRates() from_currency = variable1.get() to_currency = variable2.get() if (Amount1_field.get() == ""): tkinter.messagebox.showinfo("Error !!", "Amount Not Entered.\n Please a valid amount.") elif (from_currency == "currency" or to_currency == "currency"): tkinter.messagebox.showinfo("Error !!", "Currency Not Selected.\n Please select FROM and TO Currency form menu.") else: new_amt = c.convert(from_currency, to_currency, float(Amount1_field.get())) new_amount = float("{:.4f}".format(new_amt)) Amount2_field.insert(0, str(new_amount))#clearing all the data entered by the userdef clear_all(): Amount1_field.delete(0, tk.END) Amount2_field.delete(0, tk.END)CurrenyCode_list = ["INR", "USD", "CAD", "CNY", "DKK", "EUR"]root.configure(background='#e6e5e5')root.geometry("700x400")Label_1 = Label(root, font=('lato black', 27, 'bold'), text="", padx=2, pady=2, bg="#e6e5e5", fg="black")Label_1.grid(row=1, column=0, sticky=W)label1 = tk.Label(root, font=('lato black', 15, 'bold'), text="\t Amount : ", bg="#e6e5e5", fg="black")label1.grid(row=2, column=0, sticky=W)label1 = tk.Label(root, font=('lato black', 15, 'bold'), text="\t From Currency : ", bg="#e6e5e5", fg="black")label1.grid(row=3, column=0, sticky=W)label1 = tk.Label(root, font=('lato black', 15, 'bold'), text="\t To Currency : ", bg="#e6e5e5", fg="black")label1.grid(row=4, column=0, sticky=W)label1 = tk.Label(root, font=('lato black', 15, 'bold'), text="\t Converted Amount : ", bg="#e6e5e5", fg="black")label1.grid(row=8, column=0, sticky=W)Label_1 = Label(root, font=('lato black', 7, 'bold'), text="", padx=2, pady=2, bg="#e6e5e5", fg="black")Label_1.grid(row=5, column=0, sticky=W)Label_1 = Label(root, font=('lato black', 7, 'bold'), text="", padx=2, pady=2, bg="#e6e5e5", fg="black")Label_1.grid(row=7, column=0, sticky=W)FromCurrency_option = tk.OptionMenu(root, variable1, *CurrenyCode_list)ToCurrency_option = tk.OptionMenu(root, variable2, *CurrenyCode_list)FromCurrency_option.grid(row=3, column=0, ipadx=45, sticky=E)ToCurrency_option.grid(row=4, column=0, ipadx=45, sticky=E)Amount1_field = tk.Entry(root)Amount1_field.grid(row=2, column=0, ipadx=28, sticky=E)Amount2_field = tk.Entry(root)Amount2_field.grid(row=8, column=0, ipadx=31, sticky=E)Label_9 = Button(root, font=('arial', 15, 'bold'), text=" Convert ", padx=2, pady=2, bg="lightblue", fg="white", command=RealTimeCurrencyConversion)Label_9.grid(row=6, column=0)Label_1 = Label(root, font=('lato black', 7, 'bold'), text="", padx=2, pady=2, bg="#e6e5e5", fg="black")Label_1.grid(row=9, column=0, sticky=W)Label_9 = Button(root, font=('arial', 15, 'bold'), text=" Clear All ", padx=2, pady=2, bg="lightblue", fg="white", command=clear_all)Label_9.grid(row=10, column=0)root.mainloop() |
Output:
