这篇文章运用简单易懂的例子给大家介绍利用python编写一个汇率计算器，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
调用的api接口：
https://api.exchangerate-api.com/v4/latest/USD
完整代码
import requests
from tkinter import *
import tkinter as tk
from tkinter import ttk
class RealTimeCurrencyConverter():
def __init__(self,url):
self.data = requests.get(url).json()
self.currencies = self.data['rates']
def convert(self, from_currency, to_currency, amount):
initial_amount = amount
if from_currency != 'USD' :
amount = amount / self.currencies[from_currency]
amount = round(amount * self.currencies[to_currency], 4)
return amount
class App(tk.Tk):
def __init__(self, converter):
tk.Tk.__init__(self)
self.title = 'Currency Converter'
self.currency_converter = converter
self.geometry("500x200")
self.intro_label = Label(self, text = 'Welcome to Real Time Currency Convertor', fg = 'blue', relief = tk.RAISED, borderwidth = 3)
self.intro_label.config(font = ('Courier',15,'bold'))
self.date_label = Label(self, text = f"1 Indian Rupee equals = {self.currency_converter.convert('INR','USD',1)} USD \n Date : {self.currency_converter.data['date']}", relief = tk.GROOVE, borderwidth = 5)
self.intro_label.place(x = 10 , y = 5)
self.date_label.place(x = 160, y= 50)
valid = (self.register(self.restrictNumberOnly), '%d', '%P')
self.amount_field = Entry(self,bd = 3, relief = tk.RIDGE, justify = tk.CENTER,validate='key', validatecommand=valid)
self.converted_amount_field_label = Label(self, text = '', fg = 'black', bg = 'white', relief = tk.RIDGE, justify = tk.CENTER, width = 17, borderwidth = 3)
self.from_currency_variable = StringVar(self)
self.from_currency_variable.set("INR")
self.to_currency_variable = StringVar(self)
self.to_currency_variable.set("USD")
font = ("Courier", 12, "bold")
self.option_add('*TCombobox*Listbox.font', font)
self.from_currency_dropdown = ttk.Combobox(self, textvariable=self.from_currency_variable,values=list(self.currency_converter.currencies.keys()), font = font, state = 'readonly', width = 12, justify = tk.CENTER)
self.to_currency_dropdown = ttk.Combobox(self, textvariable=self.to_currency_variable,values=list(self.currency_converter.currencies.keys()), font = font, state = 'readonly', width = 12, justify = tk.CENTER)
self.from_currency_dropdown.place(x = 30, y= 120)
self.amount_field.place(x = 36, y = 150)
self.to_currency_dropdown.place(x = 340, y= 120)
self.converted_amount_field_label.place(x = 346, y = 150)
self.convert_button = Button(self, text = "Convert", fg = "black", command = self.perform)
self.convert_button.config(font=('Courier', 10, 'bold'))
self.convert_button.place(x = 225, y = 135)
def perform(self):
amount = float(self.amount_field.get())
from_curr = self.from_currency_variable.get()
to_curr = self.to_currency_variable.get()
converted_amount = self.currency_converter.convert(from_curr,to_curr,amount)
converted_amount = round(converted_amount, 2)
self.converted_amount_field_label.config(text = str(converted_amount))
def restrictNumberOnly(self, action, string):
regex = re.compile(r"[0-9,]*?(\.)?[0-9,]*$")
result = regex.match(string)
return (string == "" or (string.count('.') <= 1 and result is not None))
if __name__ == '__main__':
url = 'https://api.exchangerate-api.com/v4/latest/USD'
converter = RealTimeCurrencyConverter(url)
App(converter)
mainloop()运行效果：
关于利用python编写一个汇率计算器就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
免责声明：本站发布的内容（图片、视频和文字）以原创、转载和分享为主，文章观点不代表本网站立场，如果涉及侵权请联系站长邮箱：is@yisu.com进行举报，并提供相关证据，一经查实，将立刻删除涉嫌侵权内容。
