How do i get to another page without a button click in python tkinter

Question

So, I am making a login system in python with tkinter and I want it to move to another page after the email and password have been validated. The only way I have found to do this is by using a button click command. I only want it to move on to the next page after the email and password have been validated. Thanks in advance.

    from tkinter import *


    class login:

        def __init__(self, master, *args, **kwargs):

            self.emailGranted = False
            self.passwordGranted = False

            self.attempts = 8

            self.label_email = Label(text="email:", font=('Serif', 13))
            self.label_email.grid(row=0, column=0, sticky=E)

            self.label_password = Label(text="password:", font=('Serif', 13))
            self.label_password.grid(row=1, column=0, sticky=E)

            self.entry_email = Entry(width=30)
            self.entry_email.grid(row=0, column=1, padx=(3, 10))

            self.entry_password = Entry(width=30, show="•")
            self.entry_password.grid(row=1, column=1, padx=(3, 10))

            self.login = Button(text="Login", command=self.validate)
            self.login.grid(row=2, column=1, sticky=E, padx=(0, 10), pady=(2, 2))

            self.label_granted = Label(text="")
            self.label_granted.grid(row=3, columnspan=3, sticky=N+E+S+W)

        def validate(self):

            self.email = self.entry_email.get()
            self.password = self.entry_password.get()

            if self.email == "email":
                self.emailGranted = True

            else:
                self.emailGranted = False
                self.label_granted.config(text="wrong email")
                self.attempts -= 1
                self.entry_email.delete(0, END)
                if self.attempts == 0:
                    root.destroy()

            if self.password == "password":
                self.passwordGranted = True

            else:
                self.passwordGranted = False
                self.label_granted.config(text="wrong password")
                self.attempts -= 1
                self.entry_password.delete(0, END)
                if self.attempts == 0:
                    root.destroy()

            if self.emailGranted is False and self.passwordGranted is False:
                self.label_granted.config(text="wrong email and password")

            if self.emailGranted is True and self.passwordGranted is True:
                self.label_granted.config(text="access granted")
                // I want it to move on to PageOne here but I'm not sure how

    class PageOne:

        def __init__(self, master, *args, **kwargs):

            Button(text="it works").grid(row=0, column=0)

    if __name__ == "__main__":

        root = Tk()
        root.resizable(False, False)
        root.title("login")
        login(root)
        root.mainloop()

See [the general answer](https://stackoverflow.com/q/48723444/7032856). — Nae, Feb 28 '18 at 19:44
Every time the user clicks the button the program checks to see if the inputs match the set email and password. It's checked every button click. — Zzyborg, Feb 28 '18 at 20:09
I asked my question _despite_ understanding that. If that's what you _want_, don't you already have it? — Nae, Feb 28 '18 at 20:14

score 0 · Answer 1 · answered Feb 28 '18 at 19:35

0

I haven't used tkinter, but moving to a new page is like an action. And actions are performed when an event occurs. In your case the event is after the email and password passes validation. So you need to add logic to move to the new page after the validation is successful.

BTW why do you want to do this? Why not have the user press a button instead?

answered Feb 28 '18 at 19:35

Silencer310

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this isn't really an answer – Hippolippo Feb 28 '18 at 19:42
Never thought of it like that. Thanks for helping. Also, I'm quite new to tkinter myself so I'm just experimenting with different ideas. – Zzyborg Feb 28 '18 at 19:58

score 0 · Accepted Answer · answered Feb 28 '18 at 19:48

If you want to make it so it will move on as soon as there is a valid email then you want to make there be a function that will get a parameter (the email) and will return a Boolean value (True or False). To do that you need to make it like this:

def function(email):
   return email == <something>

To make it check this over and over when they are typing would be to use root.update() in a loop instead of root.mainloop() this way you can do something like this:

while function(entryWidget.get()):
   #all the configs for text
   root.update()
#let them to the next page

Is this helpful?

can you press the green check below the downvote button – Hippolippo Mar 02 '18 at 12:53 — Hippolippo, Mar 02 '18 at 12:53

How do i get to another page without a button click in python tkinter

2 Answers2