PyQt5 – 获取比特币价格的应用程序

在本文中，我们将看到如何制作一个 PyQt5 应用程序，它可以告诉比特币的实时价格。

所需模块和安装：

PyQt5： PyQt 是跨平台 GUI 工具包 Qt 的Python绑定，实现为Python插件。 PyQt 是由英国公司 Riverbank Computing 开发的免费软件。

pip install PyQt5

Requests ： Requests 允许您非常轻松地发送 HTTP/1.1 请求。无需手动将查询字符串添加到您的 URL。

pip install requests

Beautiful Soup： Beautiful Soup 是一个库，可以轻松地从网页中抓取信息。它位于 HTML 或 XML 解析器之上，提供用于迭代、搜索和修改解析树的 Pythonic 习惯用法。

pip install beautifulsoup4

Steps to make application to get real time price of bitcoin –

1. Create a window and sets its dimension and title
2. Create a label to sHow the price
3. Create a push button
4. Add action to the push button
5. Inside the action with the help of requests fetch the data for price of bit coin
6. Using beautiful soup convert the data into html code and find the price and save it in variable
7. Change the text of the label, set price as text

下面是实现——

# importing libraries
from bs4 import BeautifulSoup as BS
import requests
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("PyQt5 Bit Coin ")
  
        # setting geometry
        self.setGeometry(100, 100, 400, 600)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
  
        # creating label to show bit coin price
        self.label = QLabel("//BIT-COIN//", self)
  
        # setting geometry of label
        self.label.setGeometry(50, 150, 300, 50)
  
        # setting its alignment
        self.label.setAlignment(Qt.AlignCenter)
  
        # setting font to the label
        self.label.setFont(QFont('Times', 15))
  
        # setting border to the push button
        self.label.setStyleSheet("border : 3px solid black;")
  
        # creating push button to show current price
        button = QPushButton("Show price", self)
  
        # setting geometry to push button
        button.setGeometry(150, 300, 100, 40)
  
        # adding method to the push button
        button.clicked.connect(self.show_price)
  
        # setting tool tip to button
        button.setToolTip("Press to get Bit Coin Price")        
  
          
  
    def show_price(self):
          
        # url of the bit coin price
        url = "https://www.google.com/search?q = bitcoin + price"
          
        # getting the request from url
        data = requests.get(url)
  
        # converting the text
        soup = BS(data.text, 'html.parser')
  
        # finding metha info for the current price
        ans = soup.find("div", class_="BNeawe iBp4i AP7Wnd").text
  
        # setting this price to the label
        self.label.setText(ans)
  
  
# create pyqt5 app
  
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：