功能：
1.实现了直接输入城市名字查询
2.使用eval()转换为字典，提取字典中的元素。
3.这次的API接口：点击打开链接 ，另外附上一个 python天气查询的不错的教程：点击打开链接
4.完成的界面：
5.完整代码：
from PyQt5 import QtCore, QtGui, QtWidgets
import requests
import city
import sys
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("天气查询")
Dialog.resize(600, 600)
font = QtGui.QFont()
font.setPointSize(8)
Dialog.setFont(font)
Dialog.setSizeGripEnabled(True)
self.groupBox = QtWidgets.QGroupBox(Dialog)
self.groupBox.setGeometry(QtCore.QRect(0, 0, 581, 531))
self.groupBox.setStyleSheet("")
self.groupBox.setTitle("")
self.groupBox.setObjectName("groupBox")
self.label = QtWidgets.QLabel(self.groupBox)
self.label.setGeometry(QtCore.QRect(250, 10, 221, 81))
font = QtGui.QFont()
font.setPointSize(15)
font.setBold(True)
font.setWeight(75)
self.label.setFont(font)
self.label.setObjectName("label")
self.groupBox_2 = QtWidgets.QGroupBox(self.groupBox)
self.groupBox_2.setGeometry(QtCore.QRect(20, 80, 531, 91))
self.groupBox_2.setTitle("")
self.groupBox_2.setObjectName("groupBox_2")
self.label_3 = QtWidgets.QLabel(self.groupBox_2)
self.label_3.setGeometry(QtCore.QRect(40, 40, 181, 31))
font = QtGui.QFont()
font.setPointSize(10)
font.setBold(True)
font.setWeight(75)
self.label_3.setFont(font)
self.label_3.setObjectName("label_3")
self.lineEdit_2 = QtWidgets.QLineEdit(self.groupBox_2)
self.lineEdit_2.setGeometry(QtCore.QRect(300, 40, 151, 25))
font = QtGui.QFont()
font.setPointSize(10)
self.lineEdit_2.setFont(font)
self.lineEdit_2.setObjectName("lineEdit_2")
self.label_4 = QtWidgets.QLabel(self.groupBox)
self.label_4.setGeometry(QtCore.QRect(40, 260, 161, 18))
font = QtGui.QFont()
font.setPointSize(11)
font.setBold(True)
font.setWeight(75)
self.label_4.setFont(font)
self.label_4.setText("")
self.label_4.setObjectName("label_4")
self.groupBox_3 = QtWidgets.QGroupBox(self.groupBox)
self.groupBox_3.setGeometry(QtCore.QRect(30, 240, 521, 271))
self.groupBox_3.setTitle("")
self.groupBox_3.setObjectName("groupBox_3")
self.textEdit = QtWidgets.QTextEdit(self.groupBox_3)
self.textEdit.setGeometry(QtCore.QRect(20, 10, 471, 251))
font = QtGui.QFont()
font.setPointSize(10)
self.textEdit.setFont(font)
self.textEdit.setObjectName("textEdit")
self.pushButton_2 = QtWidgets.QPushButton(self.groupBox, clicked=self.get_data_2) # 今天天气
self.pushButton_2.setGeometry(QtCore.QRect(40, 190, 151, 34))
font = QtGui.QFont()
font.setPointSize(10)
font.setItalic(False)
self.pushButton_2.setFont(font)
self.pushButton_2.setStyleSheet("")
self.pushButton_2.setObjectName("pushButton_2")
self.pushButton_3 = QtWidgets.QPushButton(self.groupBox, clicked=self.get_data_3) # 未来五天天气
self.pushButton_3.setGeometry(QtCore.QRect(380, 190, 151, 34))
font = QtGui.QFont()
font.setPointSize(10)
font.setItalic(False)
self.pushButton_3.setFont(font)
self.pushButton_3.setStyleSheet("")
self.pushButton_3.setObjectName("pushButton_3")
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "天气查询"))
self.label.setText(_translate("Dialog", "天气查询"))
self.label_3.setText(_translate("Dialog", "输入城市名称："))
self.pushButton_2.setText(_translate("Dialog", "查看今天"))
self.pushButton_3.setText(_translate("Dialog", "查看未来五天"))
def get_data_2(self, Dialog):
citycode = city.get(self.lineEdit_2.text())
url = ('http://wthrcdn.etouch.cn/weather_mini?citykey=%s' % citycode)
self.textEdit.setText('\n' + str(url))
response = requests.request("GET", url)
a = eval(response.content)
forecast = a.get('data').get('forecast')
self.textEdit.setText(
' ' + a.get('data').get('city') + '\n'
'日期：' + forecast[0].get('date') + '\n'
'天气：' + forecast[
0].get('type') + '\n'
'温度：' + forecast[0].get('low') + '~' + forecast[0].get('high') + '\n'
'风向：' + forecast[
0].get('fengxiang') + '\n'
'风级：' + forecast[0].get('fengli') + '\n'
'感冒：' + a.get('data').get('ganmao') + '\n\n')
def get_data_3(self, Dialog):
citycode = city.get(self.lineEdit_2.text())
url = ('http://wthrcdn.etouch.cn/weather_mini?citykey=%s' % citycode)
self.textEdit.setText('\n' + str(url))
response = requests.request("GET", url)
a = eval(response.content)
forecast = a.get('data').get('forecast')
self.textEdit.setText(
' ' + a.get('data').get('city') + '未来五天天气\n'
+ forecast[0].get('date') + '\n'
' 天气：' + forecast[0].get('type') + '\n'
' 温度：' + forecast[0].get(
'low') + '~' + forecast[0].get('high') + '\n'
' 风向：' + forecast[0].get('fengxiang') + '\n'
' 风级：' +
forecast[0].get('fengli') + '\n\n'
+ forecast[1].get('date') + '\n'
' 天气：' + forecast[1].get('type') + '\n'
' 温度：' + forecast[1].get(
'low') + '~' + forecast[0].get('high') + '\n'
' 风向：' + forecast[1].get('fengxiang') + '\n'
' 风级：' +
forecast[1].get('fengli') + '\n\n'
+ forecast[2].get('date') + '\n'
' 天气：' + forecast[2].get('type') + '\n'
' 温度：' + forecast[2].get(
'low') + '~' + forecast[0].get('high') + '\n'
' 风向：' + forecast[2].get('fengxiang') + '\n'
' 风级：' +
forecast[2].get('fengli') + '\n\n'
+ forecast[3].get('date') + '\n'
' 天气：' + forecast[3].get('type') + '\n'
' 温度：' + forecast[3].get(
'low') + '~' + forecast[0].get('high') + '\n'
' 风向：' + forecast[3].get('fengxiang') + '\n'
' 风级：' +
forecast[3].get('fengli') + '\n\n'
+ forecast[4].get('date') + '\n'
' 天气：' + forecast[4].get('type') + '\n'
' 温度：' + forecast[4].get(
'low') + '~' + forecast[0].get('high') + '\n'
' 风向：' + forecast[4].get('fengxiang') + '\n'
' 风级：' +
forecast[4].get('fengli') + '\n\n'
)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())其中：
city.py 代码为：
def get(name):
f = open("city.txt",'r')
result={}
for c in f.readlines():
if c=='':
continue
c_array = c.split("=")
result[c_array[0]]=c_array[1].replace('\n','')
for num in result.keys():
if name==result[num]:
return(num)
if __name__ == "__main__":
print(get('上海'))
city.txt 数据下载地址：http://download.csdn.net/download/yz1780041410/10270080