项目实战：天气信息查询

WeatherWin.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Form</class>
 <widget class="QWidget" name="Form">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>450</width>
    <height>347</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Form</string>
  </property>
  <widget class="QGroupBox" name="groupBox">
   <property name="geometry">
    <rect>
     <x>10</x>
     <y>10</y>
     <width>431</width>
     <height>251</height>
    </rect>
   </property>
   <property name="title">
    <string>查询城市天气</string>
   </property>
   <widget class="QComboBox" name="weatherComboBox">
    <property name="geometry">
     <rect>
      <x>60</x>
      <y>30</y>
      <width>131</width>
      <height>21</height>
     </rect>
    </property>
    <item>
     <property name="text">
      <string>北京</string>
     </property>
    </item>
    <item>
     <property name="text">
      <string>天津</string>
     </property>
    </item>
    <item>
     <property name="text">
      <string>上海</string>
     </property>
    </item>
   </widget>
   <widget class="QTextEdit" name="resultText">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>60</y>
      <width>411</width>
      <height>181</height>
     </rect>
    </property>
   </widget>
   <widget class="QLabel" name="label">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>30</y>
      <width>72</width>
      <height>21</height>
     </rect>
    </property>
    <property name="text">
     <string>城市</string>
    </property>
   </widget>
  </widget>
  <widget class="QPushButton" name="queryBtn">
   <property name="geometry">
    <rect>
     <x>90</x>
     <y>300</y>
     <width>93</width>
     <height>28</height>
    </rect>
   </property>
   <property name="text">
    <string>查询</string>
   </property>
  </widget>
  <widget class="QPushButton" name="clearBtn">
   <property name="geometry">
    <rect>
     <x>230</x>
     <y>300</y>
     <width>93</width>
     <height>28</height>
    </rect>
   </property>
   <property name="text">
    <string>清空</string>
   </property>
  </widget>
 </widget>
 <resources/>
 <connections>
  <connection>
   <sender>clearBtn</sender>
   <signal>clicked()</signal>
   <receiver>Form</receiver>
   <slot>clearResult()</slot>
   <hints>
    <hint type="sourcelabel">
     <x>270</x>
     <y>314</y>
    </hint>
    <hint type="destinationlabel">
     <x>363</x>
     <y>288</y>
    </hint>
   </hints>
  </connection>
  <connection>
   <sender>queryBtn</sender>
   <signal>clicked()</signal>
   <receiver>Form</receiver>
   <slot>queryWeather()</slot>
   <hints>
    <hint type="sourcelabel">
     <x>161</x>
     <y>313</y>
    </hint>
    <hint type="destinationlabel">
     <x>64</x>
     <y>286</y>
    </hint>
   </hints>
  </connection>
 </connections>
 <slots>
  <slot>clearResult()</slot>
  <slot>queryWeather()</slot>
 </slots>
</ui>

WeatherWin.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'WeatherWin.ui'
#
# Created by: PyQt5 UI code generator 5.9.2
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(450, 347)
        self.groupBox = QtWidgets.QGroupBox(Form)
        self.groupBox.setGeometry(QtCore.QRect(10, 10, 431, 251))
        self.groupBox.setObjectName("groupBox")
        self.weatherComboBox = QtWidgets.QComboBox(self.groupBox)
        self.weatherComboBox.setGeometry(QtCore.QRect(60, 30, 131, 21))
        self.weatherComboBox.setObjectName("weatherComboBox")
        self.weatherComboBox.addItem("")
        self.weatherComboBox.addItem("")
        self.weatherComboBox.addItem("")
        self.resultText = QtWidgets.QTextEdit(self.groupBox)
        self.resultText.setGeometry(QtCore.QRect(10, 60, 411, 181))
        self.resultText.setObjectName("resultText")
        self.label = QtWidgets.QLabel(self.groupBox)
        self.label.setGeometry(QtCore.QRect(20, 30, 72, 21))
        self.label.setObjectName("label")
        self.queryBtn = QtWidgets.QPushButton(Form)
        self.queryBtn.setGeometry(QtCore.QRect(90, 300, 93, 28))
        self.queryBtn.setObjectName("queryBtn")
        self.clearBtn = QtWidgets.QPushButton(Form)
        self.clearBtn.setGeometry(QtCore.QRect(230, 300, 93, 28))
        self.clearBtn.setObjectName("clearBtn")

        self.retranslateUi(Form)
        self.clearBtn.clicked.connect(Form.clearResult)
        self.queryBtn.clicked.connect(Form.queryWeather)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.groupBox.setTitle(_translate("Form", "查询城市天气"))
        self.weatherComboBox.setItemText(0, _translate("Form", "北京"))
        self.weatherComboBox.setItemText(1, _translate("Form", "天津"))
        self.weatherComboBox.setItemText(2, _translate("Form", "上海"))
        self.label.setText(_translate("Form", "城市"))
        self.queryBtn.setText(_translate("Form", "查询"))
        self.clearBtn.setText(_translate("Form", "清空"))

getWeatherInfo.py

import requests

rep = requests.get('http://www.weather.com.cn/data/sk/101010100.html')
rep.encoding = 'utf-8'

print('返回结果: %s' % rep.json() ) 
print('城市: %s' % rep.json()['weatherinfo']['city'] )
print('风向: %s' % rep.json()['weatherinfo']['WD'] )
print('温度: %s' % rep.json()['weatherinfo']['temp'] + " 度")
print('风力: %s' % rep.json()['weatherinfo']['WS'] )
print('湿度: %s' % rep.json()['weatherinfo']['SD'] )

天气信息查询

'''
项目实战：天气信息查询

'''

import sys 	
from PyQt5.QtWidgets import QApplication , QMainWindow
from WeatherWin import Ui_Form
import requests

class MainWindow(QMainWindow ):
	def __init__(self, parent=None):    
		super(MainWindow, self).__init__(parent)
		self.ui = Ui_Form()
		self.ui.setupUi(self)
 		
	def queryWeather(self):
		cityName = self.ui.weatherComboBox.currentText()
		cityCode = self.transCityName(cityName)

		rep = requests.get('http://www.weather.com.cn/data/sk/' + cityCode + '.html')
		rep.encoding = 'utf-8'
		print( rep.json() ) 
		
		msg1 = '城市: %s' % rep.json()['weatherinfo']['city'] + '\n'
		msg2 = '风向: %s' % rep.json()['weatherinfo']['WD'] + '\n'
		msg3 = '温度: %s' % rep.json()['weatherinfo']['temp'] + ' 度' + '\n'
		msg4 = '风力: %s' % rep.json()['weatherinfo']['WS'] + '\n'
		msg5 = '湿度: %s' % rep.json()['weatherinfo']['SD'] + '\n'
		result = msg1 + msg2 + msg3 + msg4 + msg5
		self.ui.resultText.setText(result)
		
	def transCityName(self ,cityName):
		cityCode = ''
		if cityName == '北京' :
			cityCode = '101010100'
		elif cityName == '天津' :
			cityCode = '101030100'
		elif cityName == '上海' :
			cityCode = '101020100'
			
		return cityCode
				
	def clearResult(self):
		print('* clearResult  ')
		self.ui.resultText.clear()	
		
if __name__=="__main__":  
	app = QApplication(sys.argv)  
	win = MainWindow()  
	win.show()  
	sys.exit(app.exec_())