QComboBox, alimentation en cascade et initialisation

Bonjour,

Je suis confronté à un problème de gestion de mes QComboBox en cascade. J'ai un QLineEdit et cinq QCombobox.
Je saisi dans un premier temps une valeur dans mon QLineEdit() pour définir l'alimentation des mes QComboBox.
Je sélectionne une valeur dans la première qui va me définir l'alimentation de ma deuxième et ainsi de suite...

Jusque là l'alimentation en cascade se déroule parfaitement, sauf dans le cas où je saisi une nouvelle valeur dans mon QLineEdit(). Lorsque je valide cette dernière mon application se ferme et je ne sais pas d'où cela peut provenir...

Pour remettre à zéro mes QComboBox j'utilise la fonction *.clear(), je pensais que le problème pouvais venir de là mais non...

Si quelqu'un à déjà était confronté à ce genre de problème...

Je mets mon code en complément pour que vous puissiez voir ma méthodes d'alimentation qui n'est je pense pas la meilleur :aie:

Merci par avance.

Code:

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import sys, os import sqlite3 from PyQt5.QtWidgets import (QApplication, QCheckBox, QComboBox, QDateTimeEdit, QDial, QDialog, QGridLayout, QGroupBox, QHBoxLayout, QLabel, QLineEdit, QProgressBar, QPushButton, QRadioButton, QScrollBar, QSizePolicy, QTableWidgetItem, QSlider, QSpinBox, QStyleFactory, QTableWidget, QTabWidget, QTextEdit, QVBoxLayout, QWidget, QMainWindow, QFrame, QFormLayout, QMessageBox) from PyQt5.QtGui import QIcon, QPixmap from PyQt5.QtCore import pyqtSlot, QSettings, QDateTime, Qt, QTimer, QDateTime from PyQt5 import QtCore, QtGui, QtWidgets, QtSql from PyQt5 import QtWidgets, QtGui from PyQt5.QtSql import QSqlDatabase import logging from logging.handlers import RotatingFileHandler     class App(QMainWindow): #=============================================================================================== def __init__(self, parent=None): super(App, self).__init__(parent) #--- Application datas --------------------------------------------------------------------- settings=QSettings('ini/application.ini',QSettings.IniFormat); global APPLICATION_NAME APPLICATION_NAME=settings.value("GLOBAL_PARAMETERS/APPLICATION_NAME") self.setFont(QtGui.QFont('Courier new', 10)) self.setWindowIcon(QIcon('ini/graph.ico')) self.setWindowTitle(APPLICATION_NAME+ " - Design By.")   #--- Logfile ------------------------------------------------------------------------------- if not os.path.isdir('logfile'): os.mkdir('logfile')   #--- Creation of objet logger which be used to write into logs ----------------------------- self.logger = logging.getLogger()   #--- Level logger at DEBUG, like that he writes all ---------------------------------------- self.logger.setLevel(logging.DEBUG)   #--- Creation of formater which add time, #--- level of each messsage when we will write a message into logfile. --------------------- self.formatter = logging.Formatter('%(asctime)s | %(levelname)s | %(message)s')   #--- Creation of handler which redirect a write of log to a file #--- in 'append mode' with one backup and a size of 1Mo. ----------------------------------- self.file_handler = RotatingFileHandler('logfile/'+os.getlogin()+'_'+APPLICATION_NAME+'.log', 'a', 1000000, 1)   #--- DEBUG level assigned, logger must used the last formater created previously #--- and add this handle to logger. -------------------------------------------------------- self.file_handler.setLevel(logging.DEBUG) self.file_handler.setFormatter(self.formatter) self.logger.addHandler(self.file_handler)   #--- Creation of a seconf handler which redirect each log write on console. ---------------- self.stream_handler = logging.StreamHandler() self.stream_handler.setLevel(logging.DEBUG) self.logger.addHandler(self.stream_handler) #--- End of logfile parameters ------------------------------------------------------------- self.logger.log(logging.INFO, os.getlogin()+' start '+APPLICATION_NAME+'.')   self.dbconnexion = sqlite3.connect('sql/GMAO.db') self.cursor = self.dbconnexion.cursor()   self.initUI() #===============================================================================================   def initUI(self):   #--- User Interface ------------------------------------------------------------------------ #--- Header -------------------------------------------------------------------------------- Headband = QPixmap('ini/bandeau.jpg') self.bandeau = QLabel(self) self.bandeau.setFixedHeight(15) self.bandeau.setScaledContents(True) self.bandeau.setPixmap(Headband)   #--- QTabWidget creation with x tabwidget -------------------------------------------------- self.tabwidget = QTabWidget(self) self.tabwidget.addTab(self.tab1(), "Saisie panne et consultation") self.tabwidget.addTab(self.tab2(), "Réparation") self.tabwidget.addTab(self.tab3(), "Tabwidget 3") self.tabwidget.addTab(self.tab4(), "Administration") self.tabwidget.currentChanged.connect(self.onChange)   self.setCentralWidget(QFrame()) layout = QGridLayout() layout.addWidget(self.bandeau, 0, 0) layout.addWidget(self.CreateToolInformationFormGroup(), 1, 0) layout.addWidget(self.tabwidget, 2, 0) #self.tabwidget.setDisabled(True) self.centralWidget().setLayout(layout)   #--- Affichage d'un message sur la barre de status ----------------------------------------- self.statusBar().showMessage(os.getlogin()+' is currently connected.')   def onChange(self): self.logger.log(logging.INFO,str(os.getlogin())+' select self.tab1('+str(self.tabwidget.currentIndex())+')')   def CreateToolInformationFormGroup(self): #--- QGroupBox below header ---------------------------------------------------------------- groupBox = QGroupBox("--- Saisie et informations outillage ---") self.label_1 = QLabel() self.label_1.setText("Saisir le numéro de l'outillage:") self.toolQRcode = QLineEdit(self) self.toolQRcode.textChanged.connect(self.to_upper) self.toolQRcode.setFixedWidth(200) self.toolQRcode.setMaxLength(8) self.toolQRcode.returnPressed.connect(self.onPressed) self.label_ToolInformations = QLabel() self.label_ToolInformations.setText("")   vbox = QVBoxLayout() vbox.addWidget(self.label_1) vbox.addWidget(self.toolQRcode) vbox.addWidget(self.label_ToolInformations) #vbox.addStretch(1) groupBox.setLayout(vbox) return groupBox   #--- QLineEdit in Uppercase -------------------------------------------------------------------- def to_upper(self, txt): self.toolQRcode.setText(txt.upper())   #--- Function after onPressed QLineEdit -------------------------------------------------------- def onPressed(self): #self.label_ToolInformations.setText(self.toolQRcode.text()) self.logger.log(logging.INFO, os.getlogin()+' entered '+self.toolQRcode.text()+'.')   #--- Check is tool number is correctly enterd e.g SINO0001 --------------------------------- if len(self.toolQRcode.text()) < 8: QMessageBox().critical(self, APPLICATION_NAME, "Le numéro de l'outillage doit faire 8 caractères! (exemple: SINO0001)", QMessageBox.Ok) #self.tabwidget.setDisabled(True) elif not self.toolQRcode.text()[4:].isdigit(): QMessageBox().critical(self, APPLICATION_NAME, "Les 4 derniers digits doivent être décimal.", QMessageBox.Ok) elif not self.toolQRcode.text()[:4].isalpha(): QMessageBox().critical(self, APPLICATION_NAME, "Les 4 premiers digits ne doivent pas être décimal.", QMessageBox.Ok) else: self.label_ToolInformations.setText(self.toolQRcode.text()) #--- Clear Combobox -------------------------------------------------------------------- #self.ComboIntervenant.clear() #self.ComboLine.clear() #self.ComboCell.clear()   #--- Query to check if tool number is registered --------------------------------------- try: #self.dbconnexion = sqlite3.connect('sql/GMAO.db') #self.cursor = self.dbconnexion.cursor() self.cursor.execute("SELECT * FROM idtools WHERE QR_TOOL ='"+self.toolQRcode.text()+"';") self.idtools_rows = self.cursor.fetchone()   if self.idtools_rows == None: #self.tabwidget.setDisabled(True) self.label_ToolInformations.setText('L\'outillage '+self.toolQRcode.text()+ ' n\'existe pas.') self.logger.log(logging.WARNING, 'L\'outillage '+self.toolQRcode.text()+ ' n\'existe pas.') self.buttonReply = QMessageBox.warning(self, APPLICATION_NAME, "L\'outillage "+self.toolQRcode.text()+ " n\'existe pas. Voulez-vous le créer?" , QMessageBox.Yes | QMessageBox.No, QMessageBox.No) if self.buttonReply == QMessageBox.Yes: QMessageBox().critical(self, APPLICATION_NAME, "Vous n'êtes pas autorisé pour cette action.", QMessageBox.Ok) else: print('No clicked.') else: self.tabwidget.setDisabled(False) self.cursor.execute("SELECT * FROM idtools WHERE QR_TOOL ='"+self.toolQRcode.text()+"';") self.idtools_rows = self.cursor.fetchall() global tooldata self.tooldata = []   for row in self.idtools_rows: self.tooldata.append(row)   self.label_ToolInformations.setText(self.tooldata[0][6]+' '+self.tooldata[0][9]) self.LoadIntervenant() #self.LoadLines()   except sqlite3.Error: self.logger.log(logging.WARNING,"onPressed(self) -> Error with database connexion")   #--- Tabwidget 1 ------------------------------------------------------------------------------- def tab1(self): Tab1 = QWidget(self) Tab1layout = QVBoxLayout(Tab1) #--- Label, QComboBox definition... -------------------------------------------------------- self.label_1 = QLabel("Intervenant:") self.ComboIntervenant = QComboBox(self)   #---/ self.label_2 = QLabel("Ligne:") self.ComboLine = QComboBox(self)   #---/ self.label_3 = QLabel("Cellule:") self.ComboCell = QComboBox(self)   #---/ self.label_4 = QLabel("Emplacement sur cellule:") self.ComboToollocation = QComboBox(self)   #---/ self.label_5 = QLabel("Outillage mis en place:") self.ComboToolIn = QComboBox(self)   #---/ self.label_6 = QLabel("Date du retrait:")   #---/ self.label_7 = QLabel("Commentaire(s):") self.commentaire = QTextEdit(self)   #---/ self.Tab1ButtonValidation = QPushButton('Valider la saisie') self.Tab1ButtonToPDF = QPushButton('Imprimer au format pdf')   #---/ self.label_8 = QLabel("") self.label_9 = QLabel("") self.label_10 = QLabel("") self.label_11 = QLabel("") self.label_12 = QLabel("") self.label_13 = QLabel("") self.label_14 = QLabel("") self.label_15 = QLabel("") self.label_16 = QLabel("") self.label_17 = QLabel("") self.label_18 = QLabel("") self.label_19 = QLabel("") self.label_20 = QLabel("")   #---/ self.dateTimeEdit = QDateTimeEdit(QDateTime.currentDateTime(), self) self.dateTimeEdit.setDisplayFormat("dd/MM/yyyy HH:mm")   #--- QGroupBox left tab1 ------------------------------------------------------------------- self.groupBoxTab1_1 = QGroupBox("--- Renseignements panne outillage ---", Tab1) Tab1layout.addWidget(self.groupBoxTab1_1)   #---/ layout = QGridLayout() layout.addWidget(self.label_1, 0, 0) layout.addWidget(self.ComboIntervenant, 0, 1) layout.addWidget(self.label_2, 1, 0) layout.addWidget(self.ComboLine, 1, 1) layout.addWidget(self.label_3, 2, 0) layout.addWidget(self.ComboCell, 2, 1) layout.addWidget(self.label_4, 3, 0) layout.addWidget(self.ComboToollocation, 3, 1) layout.addWidget(self.label_5, 4, 0) layout.addWidget(self.ComboToolIn, 4, 1) layout.addWidget(self.label_6, 0, 3) layout.addWidget(self.dateTimeEdit, 1, 3) layout.addWidget(self.label_7, 2, 3) layout.addWidget(self.commentaire, 3, 3, 2, 3) #layout.addWidget(self.label_8, 0, 5) #layout.addWidget(self.label_9, 0, 6) #layout.addWidget(self.label_10, 0, 7) #layout.addWidget(self.label_11, 0, 8) #layout.addWidget(self.label_12, 0, 9) #layout.addWidget(self.label_13, 0, 10) #layout.addWidget(self.label_14, 0, 11) #layout.addWidget(self.label_15, 0, 12) layout.addWidget(self.label_16, 5, 0) layout.addWidget(self.label_17, 6, 0) layout.addWidget(self.label_18, 7, 0) #layout.addWidget(self.label_19, 8, 0) #layout.addWidget(self.label_20, 9, 0)   #---/Buttons validation & pdf layout.addWidget(self.Tab1ButtonValidation, 6, 6) layout.addWidget(self.Tab1ButtonToPDF, 7, 6)   #---/ self.groupBoxTab1_1.setLayout(layout)   #--- QGroupBox right tab1 ------------------------------------------------------------------ self.groupBoxTab1_2 = QGroupBox("--- Historique outillage ---", Tab1) Tab1layout.addWidget(self.groupBoxTab1_2)   #--- QTableWidget on tab1 ------------------------------------------------------------------ #tab1 = QWidget() tableWidget = QTableWidget(self) tableWidget.setColumnCount(10) tableWidget.setRowCount(1) tableWidget.setHorizontalHeaderLabels(["ID tool", "Date", "Ligne", "Cellule", "Position", "Intervenant", "Consultation", "Etat", "Modifier", "Supprimer"])   #--- I have to do a query according the QRTool to know if there is some result or not ------   row=0 data = [''] for item in data: cellinfo=QTableWidgetItem(item) ComboBreakdown = QtWidgets.QComboBox() ComboBreakdown.addItem("Choix") ComboBreakdown.addItem("Modifier panne") ComboBreakdown.addItem("Modifier réparation") tableWidget.setItem(row, 0, cellinfo) tableWidget.setCellWidget(row, 8, ComboBreakdown) #---/ ComboReparation = QtWidgets.QComboBox() ComboReparation.addItem("Choix") ComboReparation.addItem("Supprimer panne") ComboReparation.addItem("Supprimer réparation") tableWidget.setItem(row, 0, cellinfo) tableWidget.setCellWidget(row, 9, ComboReparation)   row += 1   tableWidget.resizeColumnsToContents() tab1hbox = QHBoxLayout() tab1hbox.addWidget(tableWidget)   #---/ self.groupBoxTab1_2.setLayout(tab1hbox)   return Tab1   #--- Tabwidget 2 ------------------------------------------------------------------------------- def tab2(self): groupBoxTab2 = QGroupBox("--- Tabwidget 2 ---") return groupBoxTab2   #--- Tabwidget 3 ------------------------------------------------------------------------------- def tab3(self): groupBoxTab3 = QGroupBox("--- Tabwidget 3 ---") return groupBoxTab3   #--- Tabwidget 4 ------------------------------------------------------------------------------- def tab4(self): groupBoxTab4 = QGroupBox("--- Tabwidget 4 ---") return groupBoxTab4   #--- Here all queries to fill Combobox ---------------------------------------------------------   #--- Intervenant ------------------------------------------------------------------------------- def LoadIntervenant(self): #self.ComboIntervenant.clear() try: #--- ComboBox ComboIntervenant --- self.cursor = self.dbconnexion.cursor() self.cursor.execute("SELECT * FROM intervenant;") self.idintervenant = self.cursor.fetchall()   for i in self.idintervenant: self.ComboIntervenant.addItem(i[2]+' '+i[1])   self.ComboIntervenant.setCurrentIndex(-1) self.ComboIntervenant.currentIndexChanged.connect(self.LoadLines)   except sqlite3.Error: self.logger.log(logging.WARNING, "LoadIntervenant(self) -> Error with database connexion")   #--- Load lines -------------------------------------------------------------------------------- def LoadLines(self): try: self.cursor.execute("SELECT * FROM lines;") self.idlines = self.cursor.fetchall()   for j in self.idlines: self.ComboLine.addItem(j[1])   self.ComboLine.setCurrentIndex(-1) self.ComboLine.currentIndexChanged.connect(self.CascadeCellsFilling)   except sqlite3.Error: self.logger.log(logging.WARNING, "LoadLines(self) - > Error with database connexion")   #--- Load cells according tool ----------------------------------------------------------------- def CascadeCellsFilling(self): #--- Fill all the other ComboBox according previous choices --- #self.ComboCell.clear() #self.ComboToollocation.clear() try: self.cursor.execute("SELECT * FROM lines WHERE LINE_SHORT_NAME = '"+self.ComboLine.currentText()+"';") self.idline = self.cursor.fetchall()   #self.ComboCell.clear() #self.ComboToollocation.clear() #self.ComboToolIn.clear() global tooltype, idtool, line_id self.tooltype = self.tooldata[0][0] self.idtool = self.tooldata[0][8] self.line_id = self.idline[0][0]   #--- Get associated cells according tool --- self.cursor.execute("SELECT distinct(ID_CELL), lines.ID, CELL_NUMBER, CELL_NAME FROM location, lines, cells WHERE location.ID_TOOL='"+str(self.idtool)+"' AND cells.ID=location.ID_CELL AND lines.ID=cells.ID_LINE AND lines.ID= '"+str(self.line_id)+"';") self.cells = self.cursor.fetchall()   global AttachedCells self.AttachedCells = []   for k in self.cells: self.AttachedCells.append(k) self.ComboCell.addItem(str(k[2])+' '+str(k[3]))   self.ComboCell.setCurrentIndex(-1) #self.ComboCell.currentIndexChanged.connect(self.CascadeLocationFilling)   except sqlite3.Error: self.logger.log(logging.WARNING, "CascadeCellsFilling(self) -> Error with database connexion")           #--- /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ --- #--- /!\ --- DO NOT DELETE BELOW ---- /!\ ---------------------------------------------------------- #--- /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ --- if __name__ == '__main__': app = QApplication(sys.argv) app.setStyle('Fusion') ex = App() ex.showMaximized() sys.exit(app.exec_())

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Salut,

On ne peux pas tester ton code, donc mets des print() un peu partout dans ta fonction onPressed().

Et efface ce global tooldata

Pour que cela colle plus à la réalité, je mets mon code à jour et ma db en pièce jointe.

Code:

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import sys, os import sqlite3 from PyQt5.QtWidgets import (QApplication, QCheckBox, QComboBox, QDateTimeEdit, QDial, QDialog, QGridLayout, QGroupBox, QHBoxLayout, QLabel, QLineEdit, QProgressBar, QPushButton, QRadioButton, QScrollBar, QSizePolicy, QTableWidgetItem, QSlider, QSpinBox, QStyleFactory, QTableWidget, QTabWidget, QTextEdit, QVBoxLayout, QWidget, QMainWindow, QFrame, QFormLayout, QMessageBox) from PyQt5.QtGui import QIcon, QPixmap, QColor from PyQt5.QtCore import pyqtSlot, QSettings, QDateTime, Qt, QTimer, QDateTime from PyQt5 import QtCore, QtGui, QtWidgets, QtSql from PyQt5.QtSql import QSqlDatabase import logging from logging.handlers import RotatingFileHandler     class App(QMainWindow): #=============================================================================================== def __init__(self, parent=None): super(App, self).__init__(parent) #--- Application datas --------------------------------------------------------------------- settings=QSettings('ini/application.ini',QSettings.IniFormat); global APPLICATION_NAME APPLICATION_NAME="DEBUG_MODE"#settings.value("GLOBAL_PARAMETERS/APPLICATION_NAME") self.setFont(QtGui.QFont('Courier new', 10)) #self.setWindowIcon(QIcon('ini/graph.ico')) self.setWindowTitle(APPLICATION_NAME+ " - Design By.")   #--- Logfile ------------------------------------------------------------------------------- if not os.path.isdir('logfile'): os.mkdir('logfile')   #--- Creation of objet logger which be used to write into logs ----------------------------- self.logger = logging.getLogger()   #--- Level logger at DEBUG, like that he writes all ---------------------------------------- self.logger.setLevel(logging.DEBUG)   #--- Creation of formater which add time, #--- level of each messsage when we will write a message into logfile. --------------------- self.formatter = logging.Formatter('%(asctime)s | %(levelname)s | %(message)s')   #--- Creation of handler which redirect a write of log to a file #--- in 'append mode' with one backup and a size of 1Mo. ----------------------------------- self.file_handler = RotatingFileHandler('logfile/'+os.getlogin()+'_'+APPLICATION_NAME+'.log', 'a', 1000000, 1)   #--- DEBUG level assigned, logger must used the last formater created previously #--- and add this handle to logger. -------------------------------------------------------- self.file_handler.setLevel(logging.DEBUG) self.file_handler.setFormatter(self.formatter) self.logger.addHandler(self.file_handler)   #--- Creation of a seconf handler which redirect each log write on console. ---------------- self.stream_handler = logging.StreamHandler() self.stream_handler.setLevel(logging.DEBUG) self.logger.addHandler(self.stream_handler) #--- End of logfile parameters ------------------------------------------------------------- self.logger.log(logging.INFO, os.getlogin()+' start '+APPLICATION_NAME+'.')   self.dbconnexion = sqlite3.connect('sql/GMAO.db') self.cursor = self.dbconnexion.cursor()   self.initUI() #===============================================================================================   def initUI(self):   #--- User Interface ------------------------------------------------------------------------ #--- Header -------------------------------------------------------------------------------- #Headband = QPixmap('ini/bandeau.jpg') #self.bandeau = QLabel(self) #self.bandeau.setFixedHeight(15) #self.bandeau.setScaledContents(True) #self.bandeau.setPixmap(Headband)   #--- QTabWidget creation with x tabwidget -------------------------------------------------- self.tabwidget = QTabWidget(self) self.tabwidget.addTab(self.tab1(), "Saisie panne et consultation") self.tabwidget.addTab(self.tab2(), "Réparation") self.tabwidget.addTab(self.tab3(), "Tabwidget 3") self.tabwidget.addTab(self.tab4(), "Administration") self.tabwidget.currentChanged.connect(self.onChange)   self.setCentralWidget(QFrame()) layout = QGridLayout() #layout.addWidget(self.bandeau, 0, 0) layout.addWidget(self.CreateToolInformationFormGroup(), 1, 0) layout.addWidget(self.tabwidget, 2, 0) #self.tabwidget.setDisabled(True) self.centralWidget().setLayout(layout)   #--- Affichage d'un message sur la barre de status ----------------------------------------- self.statusBar().showMessage(os.getlogin()+' is currently connected.')   def onChange(self): self.logger.log(logging.INFO,str(os.getlogin())+' select self.tab1('+str(self.tabwidget.currentIndex())+')')   def CreateToolInformationFormGroup(self): #--- QGroupBox below header ---------------------------------------------------------------- groupBox = QGroupBox("--- Saisie et informations outillage ---") self.label_1 = QLabel() self.label_1.setText("Saisir le numéro de l'outillage:") self.toolQRcode = QLineEdit(self) self.toolQRcode.textChanged.connect(self.to_upper) self.toolQRcode.setFixedWidth(200) self.toolQRcode.setMaxLength(8) self.toolQRcode.returnPressed.connect(self.onPressed) self.label_ToolInformations = QLabel() self.label_ToolInformations.setText("")   vbox = QVBoxLayout() vbox.addWidget(self.label_1) vbox.addWidget(self.toolQRcode) vbox.addWidget(self.label_ToolInformations) #vbox.addStretch(1) groupBox.setLayout(vbox) return groupBox   #--- QLineEdit in Uppercase -------------------------------------------------------------------- def to_upper(self, txt): self.toolQRcode.setText(txt.upper())   #--- Function after onPressed QLineEdit -------------------------------------------------------- def onPressed(self): #self.label_ToolInformations.setText(self.toolQRcode.text()) self.logger.log(logging.INFO, os.getlogin()+' entered '+self.toolQRcode.text()+'.')   #--- Check is tool number is correctly enterd e.g SINO0001 --------------------------------- if len(self.toolQRcode.text()) < 8: QMessageBox().critical(self, APPLICATION_NAME, "Le numéro de l'outillage doit faire 8 caractères! (exemple: SINO0001)", QMessageBox.Ok) #self.tabwidget.setDisabled(True) elif not self.toolQRcode.text()[4:].isdigit(): QMessageBox().critical(self, APPLICATION_NAME, "Les 4 derniers digits doivent être décimal.", QMessageBox.Ok) elif not self.toolQRcode.text()[:4].isalpha(): QMessageBox().critical(self, APPLICATION_NAME, "Les 4 premiers digits ne doivent pas être décimal.", QMessageBox.Ok) else: self.label_ToolInformations.setText(self.toolQRcode.text())     #--- Query to check if tool number is registered --------------------------------------- try: #--- Clear Combobox -------------------------------------------------------------------- self.ComboIntervenant.clear() self.ComboLine.clear() self.ComboCell.clear() self.cursor.execute("SELECT * FROM idtools WHERE QR_TOOL ='"+self.toolQRcode.text()+"';") self.idtools_rows = self.cursor.fetchone()   if self.idtools_rows == None: #self.tabwidget.setDisabled(True) self.label_ToolInformations.setText('L\'outillage '+self.toolQRcode.text()+ ' n\'existe pas.') self.logger.log(logging.WARNING, 'L\'outillage '+self.toolQRcode.text()+ ' n\'existe pas.') self.buttonReply = QMessageBox.warning(self, APPLICATION_NAME, "L\'outillage "+self.toolQRcode.text()+ " n\'existe pas. Voulez-vous le créer?" , QMessageBox.Yes | QMessageBox.No, QMessageBox.No) if self.buttonReply == QMessageBox.Yes: QMessageBox().critical(self, APPLICATION_NAME, "Vous n'êtes pas autorisé pour cette action.", QMessageBox.Ok) #self.AddNewTool() else: self.logger.log(logging.INFO,"Annulation création outillage "+self.toolQRcode.text()+".") else: self.tabwidget.setDisabled(False) self.cursor.execute("SELECT * FROM idtools WHERE QR_TOOL ='"+self.toolQRcode.text()+"';") self.idtools_rows = self.cursor.fetchall() global tooldata, IDtool self.tooldata = []   for row in self.idtools_rows: self.tooldata.append(row)   self.IDtool = self.tooldata[0][0] print(self.IDtool) #self.label_ToolInformations.setText(self.tooldata[0][6]+' '+self.tooldata[0][9]) self.LoadIntervenant() self.LoadLines()   except sqlite3.Error: self.logger.log(logging.WARNING,"onPressed(self) -> Error with database connexion")   #--- Tabwidget 1 ------------------------------------------------------------------------------- def tab1(self): Tab1 = QWidget(self) Tab1layout = QVBoxLayout(Tab1) #--- Label, QComboBox definition... -------------------------------------------------------- self.label_1 = QLabel("Intervenant:") self.ComboIntervenant = QComboBox(self)   #---/ self.label_2 = QLabel("Ligne:") self.ComboLine = QComboBox(self)   #---/ self.label_3 = QLabel("Cellule:") self.ComboCell = QComboBox(self)   #---/ self.label_4 = QLabel("Emplacement sur cellule:") self.ComboToollocation = QComboBox(self)   #---/ self.label_5 = QLabel("Outillage mis en place:") self.ComboToolIn = QComboBox(self)   #---/ self.label_6 = QLabel("Date du retrait:")   #---/ self.label_7 = QLabel("Commentaire(s):") self.commentaire = QTextEdit(self)   #---/ self.Tab1ButtonValidation = QPushButton('Valider la saisie') self.Tab1ButtonToPDF = QPushButton('Imprimer au format pdf')   #---/ self.label_8 = QLabel("") self.label_9 = QLabel("") self.label_10 = QLabel("") self.label_11 = QLabel("") self.label_12 = QLabel("") self.label_13 = QLabel("") self.label_14 = QLabel("") self.label_15 = QLabel("") self.label_16 = QLabel("") self.label_17 = QLabel("") self.label_18 = QLabel("") self.label_19 = QLabel("") self.label_20 = QLabel("")   #---/ self.dateTimeEdit = QDateTimeEdit(QDateTime.currentDateTime(), self) self.dateTimeEdit.setDisplayFormat("dd/MM/yyyy HH:mm")   #--- QGroupBox left tab1 ------------------------------------------------------------------- self.groupBoxTab1_1 = QGroupBox("--- Renseignements panne outillage ---", Tab1) Tab1layout.addWidget(self.groupBoxTab1_1)   #---/ layout = QGridLayout() layout.addWidget(self.label_1, 0, 0) layout.addWidget(self.ComboIntervenant, 0, 1) layout.addWidget(self.label_2, 1, 0) layout.addWidget(self.ComboLine, 1, 1) layout.addWidget(self.label_3, 2, 0) layout.addWidget(self.ComboCell, 2, 1) layout.addWidget(self.label_4, 3, 0) layout.addWidget(self.ComboToollocation, 3, 1) layout.addWidget(self.label_5, 4, 0) layout.addWidget(self.ComboToolIn, 4, 1) layout.addWidget(self.label_6, 0, 3) layout.addWidget(self.dateTimeEdit, 1, 3) layout.addWidget(self.label_7, 2, 3) layout.addWidget(self.commentaire, 3, 3, 2, 3) #layout.addWidget(self.label_8, 0, 5) #layout.addWidget(self.label_9, 0, 6) #layout.addWidget(self.label_10, 0, 7) #layout.addWidget(self.label_11, 0, 8) #layout.addWidget(self.label_12, 0, 9) #layout.addWidget(self.label_13, 0, 10) #layout.addWidget(self.label_14, 0, 11) #layout.addWidget(self.label_15, 0, 12) layout.addWidget(self.label_16, 5, 0) layout.addWidget(self.label_17, 6, 0) layout.addWidget(self.label_18, 7, 0) #layout.addWidget(self.label_19, 8, 0) #layout.addWidget(self.label_20, 9, 0)   #---/Buttons validation & pdf layout.addWidget(self.Tab1ButtonValidation, 6, 6) layout.addWidget(self.Tab1ButtonToPDF, 7, 6)   #---/ self.groupBoxTab1_1.setLayout(layout)   #--- QGroupBox right tab1 ------------------------------------------------------------------ self.groupBoxTab1_2 = QGroupBox("--- Historique outillage ---", Tab1) Tab1layout.addWidget(self.groupBoxTab1_2)   #--- QTableWidget on tab1 ------------------------------------------------------------------ #tab1 = QWidget() tableWidget = QTableWidget(self) tableWidget.setColumnCount(10)   #---/ Set number of rows, later by query tableWidget.setRowCount(10) tableWidget.setHorizontalHeaderLabels(["ID tool", "Date", "Ligne", "Cellule", "Position", "Intervenant", "Consultation", "Etat", "Modifier", "Supprimer"])   #--- I have to do a query according the QRTool to know if there is some results or not -----   row=0 data = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10'] for item in data: cellinfo=QTableWidgetItem(item) #---/ ComboBreakdown = QtWidgets.QComboBox() ComboBreakdown.addItem("Choix") ComboBreakdown.addItem("Modifier panne") ComboBreakdown.addItem("Modifier réparation") tableWidget.setItem(row, 0, cellinfo)   tableWidget.setCellWidget(row, 8, ComboBreakdown) #---/ ComboReparation = QtWidgets.QComboBox() ComboReparation.addItem("Choix") ComboReparation.addItem("Supprimer panne") ComboReparation.addItem("Supprimer réparation") tableWidget.setItem(row, 0, cellinfo) tableWidget.setCellWidget(row, 9, ComboReparation) #---/ tableWidget.setItem(row, 7, QtWidgets.QTableWidgetItem("Open")) tableWidget.item(row, 7).setBackground(QtGui.QColor('red')) row += 1   tableWidget.resizeColumnsToContents() tab1hbox = QHBoxLayout() tab1hbox.addWidget(tableWidget) #tab1hbox.addStretch(0) #---/ self.groupBoxTab1_2.setLayout(tab1hbox)   return Tab1   #--- Tabwidget 2 ------------------------------------------------------------------------------- def tab2(self): groupBoxTab2 = QGroupBox("--- Tabwidget 2 ---") return groupBoxTab2   #--- Tabwidget 3 ------------------------------------------------------------------------------- def tab3(self): groupBoxTab3 = QGroupBox("--- Tabwidget 3 ---") return groupBoxTab3   #--- Tabwidget 4 ------------------------------------------------------------------------------- def tab4(self): groupBoxTab4 = QGroupBox("--- Tabwidget 4 ---") return groupBoxTab4   #--- Here all queries to fill Combobox ---------------------------------------------------------   #--- Intervenant ------------------------------------------------------------------------------- def LoadIntervenant(self): try: #--- ComboBox ComboIntervenant --- self.ComboIntervenant.clear() self.cursor.execute("SELECT * FROM intervenant;") self.idintervenant = self.cursor.fetchall()   for i in self.idintervenant: self.ComboIntervenant.addItem(i[2]+' '+i[1])   self.ComboIntervenant.setCurrentIndex(-1) self.ComboIntervenant.currentIndexChanged.connect(self.LoadLines)   except sqlite3.Error: self.logger.log(logging.WARNING, "LoadIntervenant(self) -> Error with database connexion")   #--- Load lines -------------------------------------------------------------------------------- def LoadLines(self): try: self.ComboLine.clear() self.cursor.execute("SELECT * FROM lines;") self.idlines = self.cursor.fetchall()   for j in self.idlines: self.ComboLine.addItem(j[1])   self.ComboLine.setCurrentIndex(-1) self.ComboLine.currentIndexChanged.connect(self.CascadeCellsFilling)   except sqlite3.Error: self.logger.log(logging.WARNING, "LoadLines(self) - > Error with database connexion")   #--- Load cells according tool ----------------------------------------------------------------- def CascadeCellsFilling(self): #--- Fill all the other ComboBox according previous choices --- try: self.ComboCell.clear() self.cursor.execute("SELECT * FROM lines WHERE LINE_SHORT_NAME = '"+self.ComboLine.currentText()+"';") self.idline = self.cursor.fetchall()   #self.ComboCell.clear() #self.ComboToollocation.clear() #self.ComboToolIn.clear() global tooltype, idtool, line_id self.tooltype = self.tooldata[0][0] self.idtool = self.tooldata[0][8] self.line_id = self.idline[0][0]   #--- Get associated cells according tool --- self.cursor.execute("SELECT distinct(ID_CELL), lines.ID, CELL_NUMBER, CELL_NAME FROM location, lines, cells WHERE location.ID_TOOL='"+str(self.idtool)+"' AND cells.ID=location.ID_CELL AND lines.ID=cells.ID_LINE AND lines.ID= '"+str(self.line_id)+"';") self.cells = self.cursor.fetchall()   global AttachedCells self.AttachedCells = []   for k in self.cells: self.AttachedCells.append(k) self.ComboCell.addItem(str(k[2])+' '+str(k[3]))   self.ComboCell.setCurrentIndex(-1) #self.ComboCell.currentIndexChanged.connect(self.CascadeLocationFilling)   except sqlite3.Error: self.logger.log(logging.WARNING, "CascadeCellsFilling(self) -> Error with database connexion")           #--- /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ --- #--- /!\ --- DO NOT DELETE BELOW ---- /!\ ---------------------------------------------------------- #--- /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ ------ /!\ --- if __name__ == '__main__': app = QApplication(sys.argv) app.setStyle('Fusion') ex = App() ex.showMaximized() sys.exit(app.exec_())

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J'ai l'impression que tu crées des boucles folles là.

Lorsque tu fais:

Code:

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self.ComboIntervenant.clear() self.cursor.execute("SELECT * FROM intervenant;") self.idintervenant = self.cursor.fetchall()   for i in self.idintervenant: self.ComboIntervenant.addItem(i[2]+' '+i[1])   self.ComboIntervenant.setCurrentIndex(-1) self.ComboIntervenant.currentIndexChanged.connect(self.LoadLines)

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tu déclenches automatiquement des signaux currentIndexChanged et currentTextChanged ce qui a pour effet de modifier d'autres comboBox qui elles-mêmes ...

Il faut toujours bloquer les signaux avant tout.

Code:

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self.ComboIntervenant.blockSignals(True) self.ComboIntervenant.clear() ... self.ComboIntervenant.blockSignals(False)

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Ensuite je vois que tu connectes un signal dans une fonction. Sache que si cette fonction est appelée plusieurs fois tu auras autant de signaux émis.

Merci pour ta réponse, je regarde ça. Mais j'ai une question supplémentaire concernant le remplissage en cascade des QComboBox. De manière aurais-tu procéder où bien quelle est la plus utilisée?

Merci par avance.

Bonjour,

Pour les Combobox en cascade, ci-joint un exemple peut-être qu'il te servira dans ton projet.
Bon courage.