PyQt5+requests实现一个车票查询工具，供大家参考，具体内容如下

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结构图

效果图

思路

1、search(QPushButton)点击信号（clicked）连接到自定义的槽函数（event.search）
2、槽函数（event.search）接收四个参数：QTableWidget对象的引用、两个QLabel中的内容（站台名称）、QDateEdit格式化日期
3、槽函数（event.search）调用爬虫类（TrainService）获取车次信息，添加到QTableWidget对象中。

代码

1、ui.py(ui界面)

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

# Form implementation generated from reading ui file 'E:\Python\Qt\ui_0.ui'
#
# Created by: PyQt5 UI code generator 5.11.2
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets
from Event import EventClass
class Ui_MainWindow(object):
 def setupUi(self, MainWindow):
 event=EventClass()
 MainWindow.setObjectName("MainWindow")
 MainWindow.resize(793, 604)
 MainWindow.setStyleSheet("font: 10pt \"Microsoft YaHei UI\";")
 self.centralwidget = QtWidgets.QWidget(MainWindow)
 self.centralwidget.setObjectName("centralwidget")
 self.widget = QtWidgets.QWidget(self.centralwidget)
 self.widget.setGeometry(QtCore.QRect(0, 0, 791, 43))
 self.widget.setObjectName("widget")
 self.horizontalLayout = QtWidgets.QHBoxLayout(self.widget)
 self.horizontalLayout.setSizeConstraint(QtWidgets.QLayout.SetNoConstraint)
 self.horizontalLayout.setContentsMargins(10, 1, 1, 3)
 self.horizontalLayout.setSpacing(15)
 self.horizontalLayout.setObjectName("horizontalLayout")
 self.label = QtWidgets.QLabel(self.widget)
 self.label.setObjectName("label")
 self.horizontalLayout.addWidget(self.label)
 self.lineEdit = QtWidgets.QLineEdit(self.widget)
 self.lineEdit.setMaximumSize(QtCore.QSize(742, 16777215))
 self.lineEdit.setObjectName("lineEdit")
 self.horizontalLayout.addWidget(self.lineEdit)
 self.label_2 = QtWidgets.QLabel(self.widget)
 self.label_2.setObjectName("label_2")
 self.horizontalLayout.addWidget(self.label_2)
 self.lineEdit_2 = QtWidgets.QLineEdit(self.widget)
 self.lineEdit_2.setObjectName("lineEdit_2")
 self.horizontalLayout.addWidget(self.lineEdit_2)
 self.dateEdit = QtWidgets.QDateEdit(self.widget)
 self.dateEdit.setDate(QtCore.QDate(2019, 1, 1))
 self.dateEdit.setObjectName("dateEdit")
 self.horizontalLayout.addWidget(self.dateEdit)
 self.pushButton = QtWidgets.QPushButton(self.widget)
 self.pushButton.setObjectName("pushButton")
 self.horizontalLayout.addWidget(self.pushButton)
 self.scrollArea = QtWidgets.QScrollArea(self.centralwidget)
 self.scrollArea.setGeometry(QtCore.QRect(0, 40, 791, 561))
 self.scrollArea.setWidgetResizable(True)
 self.scrollArea.setObjectName("scrollArea")
 self.scrollAreaWidgetContents = QtWidgets.QWidget()
 self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 789, 559))
 self.scrollAreaWidgetContents.setObjectName("scrollAreaWidgetContents")
 self.tableWidget = QtWidgets.QTableWidget(self.scrollAreaWidgetContents)
 self.tableWidget.setGeometry(QtCore.QRect(0, 0, 791, 561))
 sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
 sizePolicy.setHorizontalStretch(0)
 sizePolicy.setVerticalStretch(0)
 sizePolicy.setHeightForWidth(self.tableWidget.sizePolicy().hasHeightForWidth())
 self.tableWidget.setSizePolicy(sizePolicy)
 self.tableWidget.setBaseSize(QtCore.QSize(0, 0))
 self.tableWidget.setObjectName("tableWidget")
 self.tableWidget.setColumnCount(5)
 self.tableWidget.setRowCount(0)
 item = QtWidgets.QTableWidgetItem()
 self.tableWidget.setHorizontalHeaderItem(0, item)
 item = QtWidgets.QTableWidgetItem()
 self.tableWidget.setHorizontalHeaderItem(1, item)
 item = QtWidgets.QTableWidgetItem()
 self.tableWidget.setHorizontalHeaderItem(2, item)
 item = QtWidgets.QTableWidgetItem()
 self.tableWidget.setHorizontalHeaderItem(3, item)
 item = QtWidgets.QTableWidgetItem()
 self.tableWidget.setHorizontalHeaderItem(4, item)
 self.tableWidget.horizontalHeader().setDefaultSectionSize(155)
 self.tableWidget.verticalHeader().setDefaultSectionSize(47)
 self.tableWidget.verticalHeader().setMinimumSectionSize(45)
 self.line = QtWidgets.QFrame(self.scrollAreaWidgetContents)
 self.line.setGeometry(QtCore.QRect(0, 23, 784, 31))
 self.line.setToolTipDuration(0)
 self.line.setLineWidth(1)
 self.line.setFrameShape(QtWidgets.QFrame.HLine)
 self.line.setFrameShadow(QtWidgets.QFrame.Sunken)
 self.line.setObjectName("line")
 self.scrollArea.setWidget(self.scrollAreaWidgetContents)
 MainWindow.setCentralWidget(self.centralwidget)

 self.retranslateUi(MainWindow)
 self.pushButton.clicked.connect(lambda :event.search(self.tableWidget, self.lineEdit.text(), self.lineEdit_2.text(), self.dateEdit.date().toPyDate()))
 QtCore.QMetaObject.connectSlotsByName(MainWindow)

 def retranslateUi(self, MainWindow):
 _translate = QtCore.QCoreApplication.translate
 MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
 self.label.setText(_translate("MainWindow", "From"))
 self.label_2.setText(_translate("MainWindow", "To"))
 self.pushButton.setText(_translate("MainWindow", "search"))
 item = self.tableWidget.horizontalHeaderItem(0)
 item.setText(_translate("MainWindow", "车次"))
 item = self.tableWidget.horizontalHeaderItem(1)
 item.setText(_translate("MainWindow", "出发时间"))
 item = self.tableWidget.horizontalHeaderItem(2)
 item.setText(_translate("MainWindow", "到站时间"))
 item = self.tableWidget.horizontalHeaderItem(3)
 item.setText(_translate("MainWindow", "硬卧"))
 item = self.tableWidget.horizontalHeaderItem(4)
 item.setText(_translate("MainWindow", "硬座"))


if __name__ == "__main__":
 import sys
 app = QtWidgets.QApplication(sys.argv)
 MainWindow = QtWidgets.QMainWindow()
 ui = Ui_MainWindow()
 ui.setupUi(MainWindow)
 MainWindow.show()
 sys.exit(app.exec_())

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