I'm Trying to make a sign up form and then a log in form

Question

Im trying to make a sign up form using tkinter module which collects the username and password, and after that a log in form pops up so u have to type in your username and password again, but it isn't working.

i made two variables to store the name and passcode entered in the sign up form

sign_up_name = StringVar()
sign_up_code = StringVar()

after entering the name and code and storing it and then clicking the sign up button it opens and new form to log in.

I made a function which creates two new variables to store the name and passcode entered in log in form

log_in_name = StringVar() 
log_in_code = StringVar()

and i also made the variables for the name and passcode in the signup form global

global sign_up_name        
global sign_up_code

I then made the whole screen in the same function and also used textvariable = log_in_name and textvariable = log_in_code in the entries

then I made another function inside the same function which is called when the log in button is pressed and in that function I check if the log_in_name variable is the same as the sign_up_name and if the log_in_code is the same as the sign_up_code

if log_in_name.get() == sign_up_name.get()and log_in_code.get() == sign_up_code.get():
        messagebox.showinfo("Loged In!", "Successfully Loged In!")

    else:
        messagebox.showwarning("Error!", "Wrong Name Or Passcode! Try Again!!")

but what happens is that the sign up part works perfectly but at the end it keeps displaying the error message even though I enter the same name and passcode in both the log in form and sign in form.

i even made it print the sign_up_name, log_in_name, sign_up_code, and log_in_code to see and for the sign_up_name and sign_up_code it would print whatever I entered in the entry, but for the log_in_code and log_in_name it would print nothing. I have no idea what's wrong and I even made the variables global everywhere. Please help. Here is the whole code if needed:

#importing modules
from tkinter import *
from tkinter import messagebox

#making the sign up screen 
sc = Tk()
sc.geometry("450x450")
sc.configure(background="#F0F8FF")
sc.title("Sign Up")

#two string variables to store the name and passcode_login entered i n the sign up form
sign_up_name = StringVar()
sign_up_code = StringVar()



#function to check if length of name and mail and code is okay
def check():
    sc.quit
    if len(sign_up_name.get()) >= 3 and len(mailentry.get()) >= 10 and len(sign_up_code.get()) >= 6:
        messagebox.showinfo("Account Created!" , "Account Created Succesfully! Please Login Again To View Your Report Card!")
        print("Sign Up\nUsername: ", sign_up_name.get(), "\n Passcode: ", sign_up_code.get())
        login()
        

    else:
        messagebox.showwarning("Error", "Please Make Sure Your Username Length Is Greater Than 3, Your Passcode Has More Than 6 Charecters, And Please Enter A Valid Email!")


#function to open the log in screen and check everything
def login():


    log_in_name = StringVar() #variable to store the name enetered in log in screen 
    log_in_code = StringVar() #variable to store the passcode enetered in log in screen
    #making both variables global so i can use them to check
    global sign_up_name        
    global sign_up_code

    #making the log in screen 
    wn = Tk()
    wn.geometry("450x450")
    wn.configure(background="#e8ffd6")
    wn.title("Login")

    #just labels
    sign_label = Label(wn, text="Log In To See Your Report Card! " , font=("Beachday", 23, "normal"), fg="black", bg="#e8ffd6")
    sign_label.pack()

    name_label = Label(wn, text="Username: ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#e8ffd6")
    name_label.place(x = 30, y = 100)

    passw = Label(wn, text="Passcode:  ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#e8ffd6")
    passw.place(x = 30, y = 260)

    #entries to get name and passcode
    name_login = Entry(wn, bg="#d8ffb9", fg = "black", bd=1, textvariable = log_in_name, font = ("212 Baby Girl", 15, "normal"))
    name_login.place(x = 200,  y = 106)

    code_login = Entry(wn, bg="#d8ffb9", fg = "black", bd=1, textvariable = log_in_code,  font = ("212 Baby Girl", 15, "normal"))
    code_login.place(x = 200,  y = 266)
    #log in button
    log = Button(wn, text="Log In", font=("212 Baby Girl", 17, "bold"), bg="#d8ffb9", activebackground="#d8ffb9", command=logged)
    log.place(x = 90, y = 350)
    #cancel button to close screen
    can = Button(wn, text="Cancel", font=("212 Baby Girl", 17, "bold"), bg="#d8ffb9", activebackground="#d8ffb9",command=quit)
    can.place(x = 300, y = 350)

#function to check if the name and passcode entered in the log in form is the same as the one
    #enetered in sign up form
    def logged():
        #making variables global to use them 
        global sign_up_name
        global sign_up_code

        #printing the name and passcode enetered in log in form (only for me to see if it was working)
        print("Log In: \n Username: ", log_in_name.get() , "\nPasscode: ", log_in_code.get())
        #condition to check if name and passcode given in login form is same as name and passcode
        #given in sign up form
        if log_in_name.get() == sign_up_name.get()and log_in_code.get() == sign_up_code.get():
            #message box if name and passcode matched
            messagebox.showinfo("Loged In!", "Successfully Loged In!")

        else:
            #gives error if not matched
            messagebox.showwarning("Error!", "Wrong Name Or Passcode! Try Again!!")

#setting up sign up screen 
#labels
sign_label = Label(sc, text="Sign Up To See Your Report Card! " , font=("Beachday", 23, "normal"), fg="black", bg="#F0F8FF")
sign_label.pack()

name_login_label = Label(sc, text="Username: ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#F0F8FF")
name_login_label.place(x = 30, y = 100)

maill = Label(sc, text="Email: ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#F0F8FF")
maill.place(x = 30, y = 180)

passw = Label(sc, text="Passcode:  ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#F0F8FF")
passw.place(x = 30, y = 260)

#entry for name
name_signUp = Entry(sc, bg="#eaf6fe", fg = "black", bd=1,  textvariable = sign_up_name, font = ("212 Baby Girl", 15, "normal"))
name_signUp.place(x = 200,  y = 106)
#entry for mail 
mailentry = Entry(sc, bg="#eaf6fe", fg = "black", bd=1,  font = ("212 Baby Girl", 15, "normal"))
mailentry.place(x = 200,  y = 186)
#entry for code
code_signUp = Entry(sc, bg="#eaf6fe", fg = "black", textvariable = sign_up_code,  bd=1,  font = ("212 Baby Girl", 15, "normal"))
code_signUp.place(x = 200,  y = 266)
#submit button
submit = Button(sc, text="Sign Up", font=("212 Baby Girl", 17, "bold"), bg="#ADD8E6", activebackground="#AFDCEB", command=check)
submit.place(x = 90, y = 350)
#cancel button
cancel = Button(sc, text="Cancel", font=("212 Baby Girl", 17, "bold"), bg="#ADD8E6", activebackground="#AFDCEB",command=quit)
cancel.place(x = 300, y = 350)

sc.mainloop()

It is because you have two instances of `Tk`. Use `Toplevel` for `wn` inside `login()`. — acw1668, Apr 28 '23 at 12:03

score 0 · Answer 1 · answered Apr 28 '23 at 11:38

and after that a log in form pops up so u have to type in your username and password again, but it isn't working.

for the sign_up_name and sign_up_code it would print whatever I entered in the entry, but for the log_in_code and log_in_name it would print nothing.

Importing every public name from a module using a wildcard (from tkinter import *) is a bad idea because:

It could lead to conflicts between names defined locally and the ones imported.

The problem can be fix.

Move log_in_name and log_in_code outside before check() function.
Remove all global. You don't need this.
Move logged() outside of login() function. So the Button command will activate.

In Login() function, you cannot open main window. You already had sc = Tk().

So, replace wn = Toplevel(), instead of wn = Tk(). The Toplevel() means opening a new window not a main window.

Snippet:

import tkinter as tk
from tkinter import messagebox

#making the sign up screen 
sc = tk.Tk()
sc.geometry("450x450")
sc.configure(background="#F0F8FF")
sc.title("Sign Up")

#two string variables to store the name and passcode_login entered i n the sign up form
sign_up_name = tk.StringVar()
sign_up_code = tk.StringVar()

log_in_name = tk.StringVar() #variable to store the name enetered in log in screen 
log_in_code = tk.StringVar()



#function to check if length of name and mail and code is okay
def check():
    sc.quit
    if len(sign_up_name.get()) >= 3 and len(mailentry.get()) >= 10 and len(sign_up_code.get()) >= 6:
        messagebox.showinfo("Account Created!" , "Account Created Succesfully! Please Login Again To View Your Report Card!")
        print("Sign Up\nUsername: ", sign_up_name.get(), "\n Passcode: ", sign_up_code.get())
        login()
        

    else:
        messagebox.showwarning("Error", "Please Make Sure Your Username Length Is Greater Than 3, Your Passcode Has More Than 6 Charecters, And Please Enter A Valid Email!")


#function to open the log in screen and check everything
def login():

    
    #making the log in screen 
    wn = tk.Toplevel()
    wn.geometry("450x450")
    wn.configure(background="#e8ffd6")
    wn.title("Login")

    #just labels
    sign_label = tk.Label(wn, text="Log In To See Your Report Card! " , font=("Beachday", 23, "normal"), fg="black", bg="#e8ffd6")
    sign_label.pack()

    name_label = tk.Label(wn, text="Username: ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#e8ffd6")
    name_label.place(x = 30, y = 100)

    passw = tk.Label(wn, text="Passcode:  ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#e8ffd6")
    passw.place(x = 30, y = 260)

    #entries to get name and passcode
    name_login = tk.Entry(wn, bg="#d8ffb9", fg = "black", bd=1, textvariable = log_in_name, font = ("212 Baby Girl", 15, "normal"))
    name_login.place(x = 200,  y = 106)

    code_login = tk.Entry(wn, bg="#d8ffb9", fg = "black", bd=1, textvariable = log_in_code,  font = ("212 Baby Girl", 15, "normal"))
    code_login.place(x = 200,  y = 266)
    #log in button
    log = tk.Button(wn, text="Log In", font=("212 Baby Girl", 17, "bold"), bg="#d8ffb9", activebackground="#d8ffb9", command=logged)
    log.place(x = 90, y = 350)
    #cancel button to close screen
    can = tk.Button(wn, text="Cancel", font=("212 Baby Girl", 17, "bold"), bg="#d8ffb9", activebackground="#d8ffb9",command=quit)
    can.place(x = 300, y = 350)

#function to check if the name and passcode entered in the log in form is the same as the one
    #enetered in sign up form
def logged():
    #making variables global to use them 
     

    #printing the name and passcode enetered in log in form (only for me to see if it was working)
    print("Log In: \n Username: ", log_in_name.get() , "\nPasscode: ", log_in_code.get())
    #condition to check if name and passcode given in login form is same as name and passcode
    #given in sign up form
    if log_in_name.get() == sign_up_name.get()and log_in_code.get() == sign_up_code.get():
        #message box if name and passcode matched
        messagebox.showinfo("Loged In!", "Successfully Loged In!")

    else:
        #gives error if not matched
        messagebox.showwarning("Error!", "Wrong Name Or Passcode! Try Again!!")

#setting up sign up screen 
#labels
sign_label = tk.Label(sc, text="Sign Up To See Your Report Card! " , font=("Beachday", 23, "normal"), fg="black", bg="#F0F8FF")
sign_label.pack()

name_login_label = tk.Label(sc, text="Username: ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#F0F8FF")
name_login_label.place(x = 30, y = 100)

maill = tk.Label(sc, text="Email: ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#F0F8FF")
maill.place(x = 30, y = 180)

passw = tk.Label(sc, text="Passcode:  ", font=("Chicken Pie Height", 19,"normal"), fg="black", bg="#F0F8FF")
passw.place(x = 30, y = 260)

#entry for name
name_signUp = tk.Entry(sc, bg="#eaf6fe", fg = "black", bd=1,  textvariable = sign_up_name, font = ("212 Baby Girl", 15, "normal"))
name_signUp.place(x = 200,  y = 106)
#entry for mail 
mailentry = tk.Entry(sc, bg="#eaf6fe", fg = "black", bd=1,  font = ("212 Baby Girl", 15, "normal"))
mailentry.place(x = 200,  y = 186)
#entry for code
code_signUp = tk.Entry(sc, bg="#eaf6fe", fg = "black", textvariable = sign_up_code,  bd=1,  font = ("212 Baby Girl", 15, "normal"))
code_signUp.place(x = 200,  y = 266)
#submit button
submit = tk.Button(sc, text="Sign Up", font=("212 Baby Girl", 17, "bold"), bg="#ADD8E6", activebackground="#AFDCEB", command=check)
submit.place(x = 90, y = 350)
#cancel button
cancel = tk.Button(sc, text="Cancel", font=("212 Baby Girl", 17, "bold"), bg="#ADD8E6", activebackground="#AFDCEB",command=quit)
cancel.place(x = 300, y = 350)

sc.mainloop()

Screenshot for Sign in:

Screenshot for Loginin:

I'm Trying to make a sign up form and then a log in form

1 Answers1

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