如我所述，我目前正在为荷兰Exloo的游泳池“De Leewal”建立一个数据库接口
好吧，我正在尝试让这个人能够切换屏幕（使用按钮，像“返回主菜单”）
但是当我连接代码并按下按钮时，我得到一个屏幕说：Python崩溃了（荷兰语） ... 有没有人发现错误？
这是我的代码：
MainWindow.py：
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'MainWindow.ui'
#
# Created by: PyQt5 UI code generator 5.5.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
import sys
import mysql.connector as mariadb
import ButtonFunctions
global mariadb_connection
global cursor
mariadb_connection = mariadb.connect(user='root', password='root', database='leewaldb')
cursor = mariadb_connection.cursor()
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(407, 394)
icon = QtGui.QIcon()
icon.addPixmap(QtGui.QPixmap("media/Icon.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
MainWindow.setWindowIcon(icon)
MainWindow.setStyleSheet("background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 rgba(9, 41, 4, 255), stop:0.085 rgba(2, 79, 0, 255), stop:0.19 rgba(50, 147, 22, 255), stop:0.275 rgba(236, 191, 49, 255), stop:0.39 rgba(243, 61, 34, 255), stop:0.555 rgba(135, 81, 60, 255), stop:0.667 rgba(121, 75, 255, 255), stop:0.825 rgba(164, 255, 244, 255), stop:0.885 rgba(104, 222, 71, 255), stop:1 rgba(93, 128, 0, 255));")
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout_2 = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout_2.setObjectName("gridLayout_2")
self.gridLayout = QtWidgets.QGridLayout()
self.gridLayout.setObjectName("gridLayout")
self.CopyRightLabel = QtWidgets.QLabel(self.centralwidget)
self.CopyRightLabel.setObjectName("CopyRightLabel")
self.gridLayout.addWidget(self.CopyRightLabel, 1, 0, 1, 1)
self.ExitButton = QtWidgets.QCommandLinkButton(self.centralwidget)
self.ExitButton.setObjectName("ExitButton")
self.gridLayout.addWidget(self.ExitButton, 2, 0, 1, 1)
self.ShowEverythingButton = QtWidgets.QCommandLinkButton(self.centralwidget)
self.ShowEverythingButton.setObjectName("ShowEverythingButton")
self.gridLayout.addWidget(self.ShowEverythingButton, 4, 0, 1, 1)
self.DeletePersonButton = QtWidgets.QCommandLinkButton(self.centralwidget)
self.DeletePersonButton.setStyleSheet("")
self.DeletePersonButton.setObjectName("DeletePersonButton")
self.gridLayout.addWidget(self.DeletePersonButton, 7, 0, 1, 1)
self.WelcomeLabel = QtWidgets.QLabel(self.centralwidget)
self.WelcomeLabel.setObjectName("WelcomeLabel")
self.gridLayout.addWidget(self.WelcomeLabel, 0, 0, 1, 1)
self.AddPersonButton = QtWidgets.QCommandLinkButton(self.centralwidget)
self.AddPersonButton.setObjectName("AddPersonButton")
self.gridLayout.addWidget(self.AddPersonButton, 6, 0, 1, 1)
self.SearchSpecificButton = QtWidgets.QCommandLinkButton(self.centralwidget)
self.SearchSpecificButton.setObjectName("SearchSpecificButton")
self.gridLayout.addWidget(self.SearchSpecificButton, 5, 0, 1, 1)
self.gridLayout_2.addLayout(self.gridLayout, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "BezoekersDatabase Leewal Hoofdmenu"))
self.CopyRightLabel.setText(_translate("MainWindow", "© N.S. Geldorp & H. Nahumury 2017"))
self.ExitButton.setText(_translate("MainWindow", "Exit"))
self.ShowEverythingButton.setText(_translate("MainWindow", "Iedereen geregistreerd in deze database"))
self.DeletePersonButton.setText(_translate("MainWindow", "Verwijder iemand uit de database"))
self.WelcomeLabel.setText(_translate("MainWindow", "Welkom bij de bezoekersdatabase voor het zwembad \"De Leewal\" te Exloo"))
self.AddPersonButton.setText(_translate("MainWindow", "Voeg iemand toe aan de database"))
self.SearchSpecificButton.setText(_translate("MainWindow", "Zoek een specifiek persoon"))
self.ExitButton.clicked.connect(ButtonFunctions.MainWindow.ButtonExitPressed)
self.ShowEverythingButton.clicked.connect(ButtonFunctions.MainWindow.ButtonShowEverythingPressed)
self.DeletePersonButton.clicked.connect(ButtonFunctions.MainWindow.ButtonDeletePersonPressed)
self.AddPersonButton.clicked.connect(ButtonFunctions.MainWindow.ButtonAddPersonPressed)
self.SearchSpecificButton.clicked.connect(ButtonFunctions.MainWindow.ButtonSearchSpecificPressed)
def mainforbuttonfunctions():
app = QtWidgets.QApplication(sys.argv)
ex = TheMainWindow.Ui_MainWindow()
w = QtWidgets.QMainWindow()
ex.setupUi(w)
w.show()
sys.exit(app.exec_())
def main():
app = QtWidgets.QApplication(sys.argv)
ex = Ui_MainWindow()
w = QtWidgets.QMainWindow()
ex.setupUi(w)
w.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
ButtonFunctions.py：
import mysql.connector as mariadb
import MainWindow as TheMainWindow
import sys
global mariadb_connection
global cursor
mariadb_connection = mariadb.connect(user='root', password='root', database='leewaldb')
cursor = mariadb_connection.cursor()
class MainWindow():
def ButtonExitPressed():
cursor.execute("shutdown")
exit()
def ButtonShowEverythingPressed():
pass
def ButtonDeletePersonPressed():
pass
def ButtonAddPersonPressed():
pass
def ButtonSearchSpecificPressed():
pass
class ShowEveryone():
def ButtonBackToMainMenuPressed():
self.close
TheMainWindow.mainforbuttonfunctions()
ShowEveryone.py：
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'ShowEveryone.ui'
#
# Created by: PyQt5 UI code generator 5.5.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
import sys
import ButtonFunctions
import MainWindow as TheMainWindow
class Ui_ShowEveryoneInDatabase(object):
def setupUi(self, ShowEveryoneInDatabase):
ShowEveryoneInDatabase.setObjectName("ShowEveryoneInDatabase")
ShowEveryoneInDatabase.resize(409, 396)
icon = QtGui.QIcon()
icon.addPixmap(QtGui.QPixmap("media/Icon.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
ShowEveryoneInDatabase.setWindowIcon(icon)
ShowEveryoneInDatabase.setStyleSheet("background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 rgba(9, 41, 4, 255), stop:0.085 rgba(2, 79, 0, 255), stop:0.19 rgba(50, 147, 22, 255), stop:0.275 rgba(236, 191, 49, 255), stop:0.39 rgba(243, 61, 34, 255), stop:0.555 rgba(135, 81, 60, 255), stop:0.667 rgba(121, 75, 255, 255), stop:0.825 rgba(164, 255, 244, 255), stop:0.885 rgba(104, 222, 71, 255), stop:1 rgba(93, 128, 0, 255));")
self.centralwidget = QtWidgets.QWidget(ShowEveryoneInDatabase)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout_2 = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout_2.setObjectName("gridLayout_2")
self.LijstWidget = QtWidgets.QListWidget(self.centralwidget)
self.LijstWidget.setStyleSheet("color: rgb(0, 0, 0);")
self.LijstWidget.setObjectName("LijstWidget")
self.gridLayout_2.addWidget(self.LijstWidget, 1, 0, 1, 1)
self.ReturnToMainMenuButton = QtWidgets.QCommandLinkButton(self.centralwidget)
self.ReturnToMainMenuButton.setObjectName("ReturnToMainMenuButton")
self.gridLayout_2.addWidget(self.ReturnToMainMenuButton, 2, 0, 1, 1)
self.gridLayout = QtWidgets.QGridLayout()
self.gridLayout.setObjectName("gridLayout")
self.IedereenInDatabaseLabel = QtWidgets.QLabel(self.centralwidget)
self.IedereenInDatabaseLabel.setObjectName("IedereenInDatabaseLabel")
self.gridLayout.addWidget(self.IedereenInDatabaseLabel, 0, 0, 1, 1)
self.gridLayout_2.addLayout(self.gridLayout, 0, 0, 1, 1)
ShowEveryoneInDatabase.setCentralWidget(self.centralwidget)
self.retranslateUi(ShowEveryoneInDatabase)
QtCore.QMetaObject.connectSlotsByName(ShowEveryoneInDatabase)
def retranslateUi(self, ShowEveryoneInDatabase):
_translate = QtCore.QCoreApplication.translate
ShowEveryoneInDatabase.setWindowTitle(_translate("ShowEveryoneInDatabase", "ToonIedereen - Leewal Database"))
self.ReturnToMainMenuButton.setText(_translate("ShowEveryoneInDatabase", "Terug naar het hoofdmenu"))
self.IedereenInDatabaseLabel.setText(_translate("ShowEveryoneInDatabase", "Iedereen in de database:"))
self.ReturnToMainMenuButton.clicked.connect(ButtonFunctions.ShowEveryone.ButtonBackToMainMenuPressed)
def main():
app = QtWidgets.QApplication(sys.argv)
ex = Ui_ShowEveryoneInDatabase()
w = QtWidgets.QMainWindow()
ex.setupUi(w)
w.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
提前致谢。
-Natan
P.S。如果你留下了一个downvote，请留下一个理由，如果我修理它或者证明离开它是不公平的，请准备好将其删除。
答案 0 :(得分：0)
您的代码非常混乱。下面是ShowEveryone.py重写的。它是此示例中唯一需要的文件（看起来其他文件是之前的实验尝试）。
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'ShowEveryone.ui'
#
# Created by: PyQt5 UI code generator 5.5.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
import sys
import ButtonFunctions
import MainWindow as TheMainWindow
class ShowEveryone(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super(ShowEveryone, self).__init__(parent)
self.setupUi()
self.setupConnections()
def setupUi(self):
self.setObjectName("ShowEveryoneInDatabase")
self.resize(409, 396)
icon = QtGui.QIcon()
icon.addPixmap(QtGui.QPixmap("media/Icon.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
self.setWindowIcon(icon)
self.setStyleSheet("background-color: qlineargradient(spread:pad, x1:0, y1:0, x2:1, y2:0, stop:0 rgba(9, 41, 4, 255), stop:0.085 rgba(2, 79, 0, 255), stop:0.19 rgba(50, 147, 22, 255), stop:0.275 rgba(236, 191, 49, 255), stop:0.39 rgba(243, 61, 34, 255), stop:0.555 rgba(135, 81, 60, 255), stop:0.667 rgba(121, 75, 255, 255), stop:0.825 rgba(164, 255, 244, 255), stop:0.885 rgba(104, 222, 71, 255), stop:1 rgba(93, 128, 0, 255));")
self.centralwidget = QtWidgets.QWidget(self)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout_2 = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout_2.setObjectName("gridLayout_2")
self.LijstWidget = QtWidgets.QListWidget(self.centralwidget)
self.LijstWidget.setStyleSheet("color: rgb(0, 0, 0);")
self.LijstWidget.setObjectName("LijstWidget")
self.gridLayout_2.addWidget(self.LijstWidget, 1, 0, 1, 1)
self.ReturnToMainMenuButton = QtWidgets.QCommandLinkButton(self.centralwidget)
self.ReturnToMainMenuButton.setObjectName("ReturnToMainMenuButton")
self.gridLayout_2.addWidget(self.ReturnToMainMenuButton, 2, 0, 1, 1)
self.gridLayout = QtWidgets.QGridLayout()
self.gridLayout.setObjectName("gridLayout")
self.IedereenInDatabaseLabel = QtWidgets.QLabel(self.centralwidget)
self.IedereenInDatabaseLabel.setObjectName("IedereenInDatabaseLabel")
self.gridLayout.addWidget(self.IedereenInDatabaseLabel, 0, 0, 1, 1)
self.gridLayout_2.addLayout(self.gridLayout, 0, 0, 1, 1)
self.setCentralWidget(self.centralwidget)
self.retranslateUi()
QtCore.QMetaObject.connectSlotsByName(self)
def retranslateUi(self):
_translate = QtCore.QCoreApplication.translate
self.setWindowTitle(_translate("ShowEveryoneInDatabase", "ToonIedereen - Leewal Database"))
self.ReturnToMainMenuButton.setText(_translate("ShowEveryoneInDatabase", "Terug naar het hoofdmenu"))
self.IedereenInDatabaseLabel.setText(_translate("ShowEveryoneInDatabase", "Iedereen in de database:"))
def setupConnections(self):
self.ReturnToMainMenuButton.clicked.connect(self.ButtonBackToMainMenuPressed)
def ButtonBackToMainMenuPressed(self):
self.close()
def main():
app = QtWidgets.QApplication(sys.argv)
w = ShowEveryone()
w.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
除了重组之外，崩溃的根本原因是你的插槽：
class ShowEveryone():
def ButtonBackToMainMenuPressed():
self.close
没有'ShowEveryone'类的实例。另一个问题是您的成员方法ButtonBackToMainMenuPressed没有self参数。最后，您需要包含括号来调用self.close()。
顺便说一下，如果Python崩溃，请包括回溯，例如
python.exe ShowEveryone.py
File "ShowEveryone.py", line 9
from PyQt5 import QtCore, QtGui, QtWidgets
^
IndentationError: unexpected indent