Process finished with exit code -1073740791 (0xC0000409) PyQt5 and Firebase authentication
Question
import sys
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QDialog, QApplication
from PyQt5.uic import loadUi
import pyrebase
firebaseConfig = {......}
firebase=pyrebase.initialize_app(firebaseConfig)
AUTH = firebase.auth()
class Login(QDialog):
def __init__(self):
super(Login,self).__init__()
loadUi("login.ui",self)
self.login.clicked.connect(self.loginfunction)
self.password.setEchoMode(QtWidgets.QLineEdit.Password)
self.clickhere.clicked.connect(self.gotocreate)
self.invalid.setVisible(False)
def loginfunction(self):
email=self.email.text()
password=self.password.text()
try:
auth.sign_in_with_email_and_password(email,password)
except:
self.invalid.setVisible(True)
def gotocreate(self):
createacc=CreateAcc()
widget.addWidget(createacc)
widget.setCurrentIndex(widget.currentIndex()+1)
class CreateAcc(QDialog):
def __init__(self):
super(CreateAcc,self).__init__()
loadUi("createacc.ui",self)
self.confirmacc.clicked.connect(self.createaccfunction)
self.password.setEchoMode(QtWidgets.QLineEdit.Password)
self.confirmpass.setEchoMode(QtWidgets.QLineEdit.Password)
self.invalid.setVisible(False)
def createaccfunction(self):
email = self.email.text()
if self.password.text()==self.confirmpass.text():
password=self.password.text()
try:
AUTH.create_user_with_email_and_password(email,password)
login = Login()
widget.addWidget(login)
widget.setCurrentIndex(widget.currentIndex() + 1)
except:
self.invalid.setVisible(True)
#------main-------#
app=QApplication(sys.argv)
mainwindow=Login()
widget=QtWidgets.QStackedWidget()
widget.addWidget(mainwindow)
widget.setFixedWidth(480)
widget.setFixedHeight(620)
widget.show()
app.exec_()
With this code, I am trying to save the information that I received from the user to the Firebase database, but I keep getting "Process finished with exit code -1073740791 (0xC0000409)" error. I decided to use exception handling but this time "try:" block doesn't work. Maybe i shouldn't use the authentication method to register user. Any advice?
so here is the.ui files
Register screen ui file is in the below
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Dialog</class>
<widget class="QDialog" name="Dialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>480</width>
<height>620</height>
</rect>
</property>
<property name="windowTitle">
<string>Dialog</string>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgb(54, 54, 54);</string>
</property>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>180</x>
<y>50</y>
<width>181</width>
<height>61</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">font: 28pt "MS Shell Dlg 2"; color: rgb(243, 243, 243)</string>
</property>
<property name="text">
<string>Sign up</string>
</property>
</widget>
<widget class="QLabel" name="label_2">
<property name="geometry">
<rect>
<x>40</x>
<y>170</y>
<width>141</width>
<height>61</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">font: 15pt "MS Shell Dlg 2";
color: rgb(255, 0, 127);</string>
</property>
<property name="text">
<string>Email</string>
</property>
</widget>
<widget class="QLabel" name="label_3">
<property name="geometry">
<rect>
<x>40</x>
<y>270</y>
<width>141</width>
<height>61</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">font: 15pt "MS Shell Dlg 2";
color: rgb(255, 0, 127);</string>
</property>
<property name="text">
<string>Password</string>
</property>
</widget>
<widget class="QLineEdit" name="email">
<property name="geometry">
<rect>
<x>220</x>
<y>180</y>
<width>211</width>
<height>41</height>
</rect>
</property>
</widget>
<widget class="QLineEdit" name="password">
<property name="geometry">
<rect>
<x>220</x>
<y>280</y>
<width>211</width>
<height>41</height>
</rect>
</property>
</widget>
<widget class="QPushButton" name="confirmacc">
<property name="geometry">
<rect>
<x>300</x>
<y>450</y>
<width>141</width>
<height>41</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">background-color:rgb(167, 168, 167); font-size:14px</string>
</property>
<property name="text">
<string>Confirm</string>
</property>
</widget>
<widget class="QLabel" name="label_4">
<property name="geometry">
<rect>
<x>40</x>
<y>360</y>
<width>171</width>
<height>61</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">font: 15pt "MS Shell Dlg 2";
color: rgb(255, 0, 127);</string>
</property>
<property name="text">
<string>Confirm Pass</string>
</property>
</widget>
<widget class="QLineEdit" name="confirmpass">
<property name="geometry">
<rect>
<x>220</x>
<y>370</y>
<width>211</width>
<height>41</height>
</rect>
</property>
</widget>
<widget class="QLabel" name="invalid">
<property name="geometry">
<rect>
<x>310</x>
<y>420</y>
<width>131</width>
<height>20</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>10</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="autoFillBackground">
<bool>false</bool>
</property>
<property name="styleSheet">
<string notr="true">color: rgb(255, 0, 0)</string>
</property>
<property name="text">
<string>Invalid Email</string>
</property>
</widget>
</widget>
<resources/>
<connections/>
</ui>
Login screen ui is at the below
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Dialog</class>
<widget class="QDialog" name="Dialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>480</width>
<height>620</height>
</rect>
</property>
<property name="windowTitle">
<string>Dialog</string>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgb(54, 54, 54);</string>
</property>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>180</x>
<y>50</y>
<width>131</width>
<height>61</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">font: 28pt "MS Shell Dlg 2"; color: rgb(243, 243, 243)</string>
</property>
<property name="text">
<string>Login </string>
</property>
</widget>
<widget class="QLabel" name="label_2">
<property name="geometry">
<rect>
<x>40</x>
<y>170</y>
<width>141</width>
<height>61</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">font: 15pt "MS Shell Dlg 2";
color: rgb(255, 0, 127);</string>
</property>
<property name="text">
<string>Username</string>
</property>
</widget>
<widget class="QLabel" name="label_3">
<property name="geometry">
<rect>
<x>40</x>
<y>270</y>
<width>141</width>
<height>61</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">font: 15pt "MS Shell Dlg 2";
color: rgb(255, 0, 127);</string>
</property>
<property name="text">
<string>Password</string>
</property>
</widget>
<widget class="QLineEdit" name="email">
<property name="geometry">
<rect>
<x>200</x>
<y>180</y>
<width>201</width>
<height>41</height>
</rect>
</property>
</widget>
<widget class="QLineEdit" name="password">
<property name="geometry">
<rect>
<x>200</x>
<y>280</y>
<width>201</width>
<height>41</height>
</rect>
</property>
</widget>
<widget class="QPushButton" name="login">
<property name="geometry">
<rect>
<x>300</x>
<y>430</y>
<width>141</width>
<height>41</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">background-color:rgb(167, 168, 167); font-size:14px</string>
</property>
<property name="text">
<string>Login</string>
</property>
</widget>
<widget class="QLabel" name="label_4">
<property name="geometry">
<rect>
<x>200</x>
<y>350</y>
<width>161</width>
<height>16</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">color:rgb(255, 255, 255)</string>
</property>
<property name="text">
<string>Don't have an account? </string>
</property>
</widget>
<widget class="QPushButton" name="clickhere">
<property name="geometry">
<rect>
<x>340</x>
<y>350</y>
<width>91</width>
<height>21</height>
</rect>
</property>
<property name="styleSheet">
<string notr="true">background-color:#363636; font-size:14px; color: rgb(230, 230, 230)</string>
</property>
<property name="text">
<string>Click here!</string>
</property>
</widget>
<widget class="QLabel" name="invalid">
<property name="geometry">
<rect>
<x>310</x>
<y>400</y>
<width>121</width>
<height>20</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>10</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="autoFillBackground">
<bool>false</bool>
</property>
<property name="styleSheet">
<string notr="true">color: rgb(255, 0, 0)</string>
</property>
<property name="text">
<string>Invalid Login</string>
</property>
</widget>
</widget>
<resources/>
<connections/>
</ui>
1 answers
solution1
1 2021-04-03 20:13:51
If you want to know the cause of the error then you should run the script in the console to get a more descriptive message instead of a numerical code.
I see that the logic is messy, in this case I prefer to have a class that only handles the logic of authentication or user creation:
from functools import cached_property
import threading
import sys
from PyQt5.QtCore import QObject, pyqtSignal
from PyQt5.QtWidgets import QDialog, QApplication, QStackedWidget, QLineEdit
from PyQt5.uic import loadUi
import pyrebase
class Reply(QObject):
finished = pyqtSignal(object, str)
def execute(self, *args, **kwargs):
threading.Thread(target=self._execute, args=(args, kwargs), daemon=True).start()
def _execute(self, args, kwargs):
error = ""
result = None
try:
result = self.task(*args, **kwargs)
except Exception as e:
error = str(e)
self.finished.emit(result, error)
def task(self, *args, **kwargs):
pass
class SignInReply(Reply):
def task(self, auth, email, password):
return auth.sign_in_with_email_and_password(email, password)
class CreateUserReply(Reply):
def task(self, auth, email, password):
return auth.create_user_with_email_and_password(email, password)
class LoginWidget(QDialog):
def __init__(self):
super(LoginWidget, self).__init__()
loadUi("login.ui", self)
self.password.setEchoMode(QLineEdit.Password)
self.invalid.setVisible(False)
def credentials(self):
return self.email.text(), self.password.text()
def update_status(self, status):
if not status:
self.invalid.show()
class CreateAcc(QDialog):
def __init__(self):
super(CreateAcc, self).__init__()
loadUi("createacc.ui", self)
self.password.setEchoMode(QLineEdit.Password)
self.confirmpass.setEchoMode(QLineEdit.Password)
self.invalid.hide()
def credentials(self):
return self.email.text(), self.password.text(), self.confirmpass.text()
def update_status(self, status):
if not status:
self.invalid.show()
class Manager(QObject):
def __init__(self, parent=None):
super().__init__(parent)
self.stacked_widget.addWidget(self.login_widget)
self.stacked_widget.addWidget(self.create_account_widget)
self.stacked_widget.setFixedSize(480, 620)
self.login_widget.login.clicked.connect(self.login)
self.login_widget.clickhere.clicked.connect(self.open_create_widget)
self.create_account_widget.confirmacc.clicked.connect(self.create_user)
@cached_property
def firebase(self):
config = {}
return pyrebase.initialize_app(config)
@cached_property
def auth(self):
return self.firebase.auth()
@cached_property
def stacked_widget(self):
return QStackedWidget()
@cached_property
def login_widget(self):
return LoginWidget()
@cached_property
def create_account_widget(self):
return CreateAcc()
def login(self):
email, password = self.login_widget.credentials()
reply = SignInReply(self)
reply.finished.connect(self.handle_signin)
reply.execute(self.auth, email, password)
def create_user(self):
email, password, confirm_password = self.create_account_widget.credentials()
if password == confirm_password:
reply = CreateUserReply(self)
reply.finished.connect(self.handle_create_user)
reply.execute(self.auth, email, password)
else:
self.create_account_widget.update_status(False)
def handle_signin(self, user, error):
self.login_widget.update_status(not error or user)
def handle_create_user(self, result, error):
if not error:
self.stacked_widget.setCurrentWidget(self.login_widget)
def open_create_widget(self):
self.stacked_widget.setCurrentWidget(self.create_account_widget)
if __name__ == "__main__":
app = QApplication(sys.argv)
manager = Manager()
manager.stacked_widget.show()
app.exec_()
Note: The requests are being executed in a second thread since these tasks can take a long time blocking the GUI.
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