PyQt5 – 获取比特币价格的应用程序

在这篇文章中，我们将看到如何制作一个告诉比特币实时价格的PyQt5应用程序。 需要的模块和安装： PyQt5： PyQt5是跨平台GUI工具包Qt的一个Python绑定，作为一个Python插件实现。PyQt5是由英国公司Riverbank Computing开发的免费软件。

pip install PyQt5

请求： 请求允许你非常容易地发送HTTP/1.1请求。不需要手动添加查询字符串到你的URLs。

pip install requests

Beautiful Soup： Beautiful Soup是一个库，它使从网页上搜刮信息变得容易。它位于HTML或XML解析器之上，为迭代、搜索和修改解析树提供Pythonic习语。

pip install beautifulsoup4

制作获取比特币实时价格的应用程序的步骤 –

1.创建一个窗口并设置其尺寸和标题

2.创建一个标签，说明价格如何

3.创建一个按钮

4.在按钮上添加动作

5.在动作的帮助下，获取比特币价格的数据

6.使用beautiful soup将数据转换成html代码，找到价格并将其保存在变量中

7.改变标签的文本，将价格设为文本

以下是执行情况 –

# 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 meta 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())