PySimpleGUI – Login Authenticator

Question

I’m having trouble getting the login authenticator to work. Everything works fine except the login() function. The other two functions progress_bar() and create_account() are running without a problem. I keep getting a KeyError: ‘-username-‘ message. I’ve tried everything, even not using functions, and still. I can’t find the issue. Anyone? @MacItaly

import PySimpleGUI as sg

#PROGRESS BAR
def progress_bar():
    sg.theme('LightBlue2')
    layout = [[sg.Text('Creating your account...')],
            [sg.ProgressBar(1000, orientation='h', size=(20, 20), key='progbar')],
            [sg.Cancel()]]

    window = sg.Window('Working...', layout)
    for i in range(1000):
        event, values = window.read(timeout=1)
        if event == 'Cancel' or event == sg.WIN_CLOSED:
            break
        window['progbar'].update_bar(i + 1)
    window.close()


def create_account():
    sg.theme('LightBlue2')
    layout = [[sg.Text("Sign Up", size =(15, 1), font=40, justification='c')],
             [sg.Text("E-mail", size =(15, 1),font=16), sg.InputText(key='-email-', font=16)],
             [sg.Text("Re-enter E-mail", size =(15, 1), font=16), sg.InputText(key='-remail-', font=16)],
             [sg.Text("Create Username", size =(15, 1), font=16), sg.InputText(key='-username-', font=16)],
             [sg.Text("Create Password", size =(15, 1), font=16), sg.InputText(key='-password-', font=16, password_char='*')],
             [sg.Button("Submit"), sg.Button("Cancel")]]

    window = sg.Window("Sign Up", layout)

    
    while True:
        event,values = window.read()
        if event == 'Cancel' or event == sg.WIN_CLOSED:
            break
        else:
            if event == "Submit":
                if values['-email-'] != values['-remail-']:
                    sg.popup_error("Error", font=16)
                    continue
                elif values['-email-'] == values['-remail-']:
                    progress_bar()
                    break
    window.close()
create_account()


def login():
    sg.theme("LightBlue2")
    layout = [[sg.Text("Log In", size =(15, 1), font=40)],
            [sg.Text("Username", size =(15, 1), font=16),sg.InputText(key='-usrnm-', font=16)],
            [sg.Text("Password", size =(15, 1), font=16),sg.InputText(key='-pwd-', password_char='*', font=16)],
            [sg.Button('Ok'),sg.Button('Cancel')]]

    window = sg.Window("Log In", layout)

    while True:
        event,values = window.read()
        if event == "Cancel" or event == sg.WIN_CLOSED:
            break
        else:
            if event == "Ok":
                if values['-usrnm-'] == values['-username-'] and values['-pwd-'] == values['-password-']:
                    sg.popup("Welcome!")
                    break
                elif values['-usrnm-'] != values['-username-'] and values['-pwd-'] != values['-password-']:
                    sg.popup("Invalid login. Try again")

    window.close()
login()

Asked By: Robin Sage

||

Source

Answer 1

You can not use values['-password-'] after closing windows gui. you have to store username and password in variable. by using variable you can verify username and password at login function.

Try this :

import PySimpleGUI as sg


username = ''
password = ''
#PROGRESS BAR
def progress_bar():
    sg.theme('LightBlue2')
    layout = [[sg.Text('Creating your account...')],
            [sg.ProgressBar(1000, orientation='h', size=(20, 20), key='progbar')],
            [sg.Cancel()]]

    window = sg.Window('Working...', layout)
    for i in range(1000):
        event, values = window.read(timeout=1)
        if event == 'Cancel' or event == sg.WIN_CLOSED:
            break
        window['progbar'].update_bar(i + 1)
    window.close()


def create_account():
    global username, password
    sg.theme('LightBlue2')
    layout = [[sg.Text("Sign Up", size =(15, 1), font=40, justification='c')],
             [sg.Text("E-mail", size =(15, 1),font=16), sg.InputText(key='-email-', font=16)],
             [sg.Text("Re-enter E-mail", size =(15, 1), font=16), sg.InputText(key='-remail-', font=16)],
             [sg.Text("Create Username", size =(15, 1), font=16), sg.InputText(key='-username-', font=16)],
             [sg.Text("Create Password", size =(15, 1), font=16), sg.InputText(key='-password-', font=16, password_char='*')],
             [sg.Button("Submit"), sg.Button("Cancel")]]

    window = sg.Window("Sign Up", layout)

    while True:
        event,values = window.read()
        if event == 'Cancel' or event == sg.WIN_CLOSED:
            break
        else:
            if event == "Submit":
                password = values['-password-']
                username = values['-username-']
                if values['-email-'] != values['-remail-']:
                    sg.popup_error("Error", font=16)
                    continue
                elif values['-email-'] == values['-remail-']:
                    progress_bar()
                    break
    window.close()
create_account()


def login():
    global username,password
    sg.theme("LightBlue2")
    layout = [[sg.Text("Log In", size =(15, 1), font=40)],
            [sg.Text("Username", size =(15, 1), font=16),sg.InputText(key='-usrnm-', font=16)],
            [sg.Text("Password", size =(15, 1), font=16),sg.InputText(key='-pwd-', password_char='*', font=16)],
            [sg.Button('Ok'),sg.Button('Cancel')]]

    window = sg.Window("Log In", layout)

    while True:
        event,values = window.read()
        if event == "Cancel" or event == sg.WIN_CLOSED:
            break
        else:
            if event == "Ok":
                if values['-usrnm-'] == username and values['-pwd-'] == password:
                    sg.popup("Welcome!")
                    break
                elif values['-usrnm-'] != username or values['-pwd-'] != password:
                    sg.popup("Invalid login. Try again")

    window.close()
login()

Answered By: Bhargav Desai

PySimpleGUI – Login Authenticator

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