天气查询软件（基于python的pyqt5）

import sys
import os
import requests
from PyQt5.QtWidgets import (QWidget, QPushButton, QLineEdit,
    QInputDialog, QApplication)
from PyQt5.QtWidgets import QWidget, QMessageBox, QApplication
from PyQt5 import QtCore, QtGui, QtWidgets
class Example(QWidget):

    def __init__(self):
        super().__init__()

        self.initUI()

    def initUI(self):
        #qbtn = QPushButton('退出', self)
        #qbtn.clicked.connect(QCoreApplication.instance().quit)
        #qbtn.resize(qbtn.sizeHint())
        #qbtn.move(20, 200)
        ##退出按钮
        self.btn = QPushButton('输入城市名', self)
        self.btn.move(20, 20)
        self.btn.clicked.connect(self.showDialog)
        ##输入城市按钮
        self.le = QLineEdit(self)
        #QLineEdit
        self.le.move(120, 100)#(X,Y)原点为左上角
        self.le.resize(220, 80)#(宽，长)
        #self.le.setWordWrap(True)
        ##展示窗口
        todaytn = QPushButton('今日天气查询', self)
        todaytn.clicked.connect(self.qiwen)
        todaytn.move(20,100)
        todaytn = QPushButton('明日天气查询', self)
        todaytn.clicked.connect(self.toqiwen)
        todaytn.move(20,150)
        ##天气查询
        self.setGeometry(150, 100, 460, 350)
        self.setWindowTitle('天气查询')
        self.show()
        ##主界面
    def closeEvent(self, event):

        reply = QMessageBox.question(self, '信息',
            "确定退出?", QMessageBox.Yes |
            QMessageBox.No, QMessageBox.No)

        if reply == QMessageBox.Yes:
            event.accept()
        else:
            event.ignore()
    def showDialog(self):
        global text
        text, ok = QInputDialog.getText(self, '输入城市名',
            '两个字符')

        if ok:
            #self.le.setText(str(text))
            pass
    def qiwen(self):
        try:
            r = requests.get("http://wthrcdn.etouch.cn/weather_mini?city="+text)
        except Exception as e:
            r = requests.get("http://wthrcdn.etouch.cn/weather_mini?city=南京")
        else:
            pass
        #print(r.text)
        resultjson = r.json()
        todayqiwen= resultjson['data']['forecast'][0]
        tomorowqiwen = resultjson['data']['forecast'][1]
        today= todayqiwen['date']
        todayhighwendu = todayqiwen['high']
        todaylowwendu = todayqiwen['low']
        todayfengxiang = todayqiwen['fengxiang']
        todayfengli = todayqiwen['fengli']
        todaytype = todayqiwen['type']
        self.le.setText(str(today)+str(todaylowwendu)+str(todayhighwendu)+str(todaytype))
    def toqiwen(self):
        try:
            r2 = requests.get("http://wthrcdn.etouch.cn/weather_mini?city="+text)
        except Exception as e:
            r2 = requests.get("http://wthrcdn.etouch.cn/weather_mini?city=南京")
        else:
            pass
        #print(r.text)
        resultjson = r2.json()
        tomorowqiwen = resultjson['data']['forecast'][1]
        today= tomorowqiwen['date']
        todayhighwendu = tomorowqiwen['high']
        todaylowwendu = tomorowqiwen['low']
        todayfengxiang = tomorowqiwen['fengxiang']
        todayfengli = tomorowqiwen['fengli']
        todaytype = tomorowqiwen['type']
        self.le.setText(str(today)+str(todaylowwendu)+str(todayhighwendu)+str(todaytype))
        #print(todayqiwen)
        #print(tomorowqiwen)
        #print(today)
if __name__ == '__main__':

    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())