pyqt5+爬虫+有界面的爬取天气预报

import sys
import urllib
from json import JSONDecodeError

import requests
from PyQt5 import QtWidgets, QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *





class XZS(QWidget):
    def __init__(self):
        super(XZS, self).__init__()

        self.resize(520,600)
        self.center()   #使窗口居中
        self.setWindowTitle("小助手")
        self.setWindowIcon(QIcon('1.jpg'))

        font = QtGui.QFont()
        font.setFamily("宋体")


        self.textEdit = QLineEdit(self)
        self.textEdit.move(60, 50)
        self.textEdit.setFont(font)

        self.textEdit2 = QTextEdit(self)
        self.textEdit2.move(60, 100)
        self.textEdit2.setFixedSize(300, 400)
        self.textEdit2.setFont(font)
        self.textEdit2.setFocusPolicy(QtCore.Qt.NoFocus)

        self.label1 = QLabel(self)
        self.label1.setFont(font)
        self.label1.setText("城市天气查询")
        # self.label1.setFixedSize(300, 400)
        self.label1.move(50, 30)

        btn_1 = QPushButton(self)
        btn_1.setText("查询")
        btn_1.move(250, 30)
        btn_1.setFixedSize(100, 50)
        btn_1.clicked.connect(self.look)


        btn_2 = QPushButton(self)
        btn_2.setText("退出")
        btn_2.move(400, 30)
        btn_2.setFixedSize(100, 50)
        btn_2.clicked.connect(QCoreApplication.quit)


    def look(self):
        city = self.textEdit.text()
        print(city)

        html = f'http://wthrcdn.etouch.cn/weather_mini?city=' + urllib.parse.quote(city)

        try:
            info = requests.get(html)
            # print(info)
            info.encoding = 'utf-8'
        except requests.ConnectionError:
            raise

        try:
            info_json = info.json()
            # print(info_json)
        except JSONDecodeError:
            return '无法查询'

        try:
            for i in range(1):  # 将每一天的数据放入列表中
                # 天气情况
                data = info_json['data']
                city = f"城市：{data['city']}\n"
                # 以 f开头表示在字符串内支持大括号内的python 表达式
                today = data['forecast'][i]
                date = f"日期：{today['date']}\n"
                now = f"实时温度：{data['wendu']}度\n"
                temperature = f"温度：{today['high']} {today['low']}\n"
                fengxiang = f"风向：{today['fengxiang']}\n"
                type = f"天气：{today['type']}\n"
                tips = f"贴士：{data['ganmao']}\n"

                self.textEdit2.setText(city + date + now + temperature + fengxiang + type + tips + "\n\n")
                print(city + date + now + temperature + fengxiang + type + tips + "\n\n")

                self.textEdit.clear()

        except:
            self.textEdit2.setText('请输入正确的城市名称')
            self.textEdit.clear()






    def center(self):  # 控制窗口显示在屏幕中心的方法

        # 获得窗口
        qr = self.frameGeometry()
        # 获得屏幕中心点
        cp = QDesktopWidget().availableGeometry().center()
        # 显示到屏幕中心
        qr.moveCenter(cp)
        self.move(qr.topLeft())


    def keyPressEvent(self,e):
        # 设置快捷键
        if e.key() == Qt.Key_Return:
                self.look()
        # if event.key() == QtCore.Qt.Key_Escape:  # 当我们按住键盘是esc按键时
        #     self.close()  # 关闭程序



if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    my = XZS()
    my.show()
    sys.exit(app.exec_())