Python - Pass the value of 'tk.Entry' value to a function

Question

Here is loginPage function code

import tkinter as tk

def loginPage(self):
    login_screen = tk.Tk()
    login_screen.title("Login")
    login_screen.geometry("300x250")
    tk.Label(login_screen, text="Please enter login details").pack()
    tk.Label(login_screen, text="").pack()
    tk.Label(login_screen, text="Username").pack()
    self.username_login_entry = tk.Entry(login_screen, textvariable="username")
    self.username_login_entry.pack()
    tk.Label(login_screen, text="").pack()
    tk.Label(login_screen, text="Password").pack()
    self.password_login_entry = tk.Entry(login_screen, textvariable="password", show='*')
    self.password_login_entry.pack()
    tk.Label(login_screen, text="").pack()
    tk.Button(login_screen, text="Login", width=10, height=1, command=lambda x=self.username_login_entry.get(), y=self.password_login_entry.get(): mainLogin().verifyLogin(x, y)).pack()
    login_screen.mainloop()

here is my verify login function code

    def verifyLogin(self, uname, pword):

    try:
        import python_to_postgres as pp
        global checkUserEst
        print('user nad pass!!! ', uname, pword)
        #ETO UNG MAY PROBLEM DIKO MAKIHA UNG VALUE MULA TKINTER ENTRY
        self.checkUser = pp.pyPostgre().loginAuth(uname, pword)

is there any other ways on how to pass the value of an entry widgets into the other function?

You don't need the lambda arguments with default values. Call those .get() inside the function instead. — acw1668
– acw1668, Commented Jan 22, 2022 at 11:35

Aldwin Nunag · Accepted Answer · 2022-01-22 14:39:56Z

1

I fixed it by using lambda. see the code below.

command=lambda a=0, b=0: mainLogin().verifyLogin(self.username_login_entry.get(), self.password_login_entry.get())

answered Jan 22, 2022 at 14:39

Aldwin Nunag

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2 Comments

acw1668 Over a year ago

What the point of the two arguments a and b? They are not necessary at all.

Aldwin Nunag Over a year ago

I don't know how that works behind but whenever I use lambda together with function that requires parameter/s it doesn't execute right away It will wait for the button to be pressed.

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