我正在使用tkinter模块为登录系统编写代码。 Python返回属性错误，我只是在学习tkinter模块。帮助将不胜感激。正在使用exec命令从另一个文件运行代码。这是我的代码：
#import modules
from tkinter import *
import os
import pygame
from Mathletics_V2 import *
# Designing window for registration
def register():
global register_screen
register_screen = Toplevel(main_screen)
register_screen.title("Register")
register_screen.geometry("300x250")
global username
global password
global username_entry
global password_entry
username = StringVar()
password = StringVar()
Label(register_screen, text="Please enter details below", bg="blue").pack()
Label(register_screen, text="").pack()
username_lable = Label(register_screen, text="Username * ")
username_lable.pack()
username_entry = Entry(register_screen, textvariable=username)
username_entry.pack()
password_lable = Label(register_screen, text="Password * ")
password_lable.pack()
password_entry = Entry(register_screen, textvariable=password, show='*')
password_entry.pack()
Label(register_screen, text="").pack()
Button(register_screen, text="Register", width=10, height=1, bg="blue", command = register_user).pack()
# Designing window for login
def login():
global login_screen
login_screen = Toplevel(main_screen)
login_screen.title("Login")
login_screen.geometry("300x250")
Label(login_screen, text="Please enter details below to login").pack()
Label(login_screen, text="").pack()
global username_verify
global password_verify
username_verify = StringVar()
password_verify = StringVar()
global username_login_entry
global password_login_entry
Label(login_screen, text="Username * ").pack()
username_login_entry = Entry(login_screen, textvariable=username_verify)
username_login_entry.pack()
Label(login_screen, text="").pack()
Label(login_screen, text="Password * ").pack()
password_login_entry = Entry(login_screen, textvariable=password_verify, show= '*')
password_login_entry.pack()
Label(login_screen, text="").pack()
Button(login_screen, text="Login", width=10, height=1, command =login_verify).pack()
# Implementing event on register button
def register_user():
username_info = username.get()
password_info = password.get()
file = open(username_info, "a+")
file.write(username_info + "\n")
file.write(password_info + "\n")
file.close()
username_entry.delete(0, END)
password_entry.delete(0, END)
Label(register_screen, text="Registration Success", fg="green", font=("calibri", 11)).pack()
# Implementing event on login button
def login_verify():
global username1
username1 = username_verify.get()
password1 = password_verify.get()
username_login_entry.delete(0, END)
password_login_entry.delete(0, END)
list_of_files = os.listdir()
if username1 in list_of_files:
file1 = open(username1, "r")
print(username1)
verify = file1.read().splitlines()
if username1 == 'admin':
tMain_Screen()
elif password1 in verify:
login_sucess()
else:
password_not_recognised()
else:
user_not_found()
# Designing popup for login success
def login_sucess():
global login_success_screen
login_success_screen = Toplevel(login_screen)
login_success_screen.title("Success")
login_success_screen.geometry("150x100")
Label(login_success_screen, text="Login Success").pack()
Button(login_success_screen, text="OK", command=delete_login_success).pack()
game_intro()
# Designing popup for login invalid password
def password_not_recognised():
global password_not_recog_screen
password_not_recog_screen = Toplevel(login_screen)
password_not_recog_screen.title("Success")
password_not_recog_screen.geometry("150x100")
Label(password_not_recog_screen, text="Invalid Password ").pack()
Button(password_not_recog_screen, text="OK", command=delete_password_not_recognised).pack()
# Designing popup for user not found
def user_not_found():
global user_not_found_screen
user_not_found_screen = Toplevel(login_screen)
user_not_found_screen.title("Success")
user_not_found_screen.geometry("150x100")
Label(user_not_found_screen, text="User Not Found").pack()
Button(user_not_found_screen, text="OK", command=delete_user_not_found_screen).pack()
# Deleting popups
def delete_login_success():
login_success_screen.destroy()
def delete_password_not_recognised():
password_not_recog_screen.destroy()
def delete_user_not_found_screen():
user_not_found_screen.destroy()
# Designing Main(first) window
def main_account_screen():
global main_screen
main_screen = Tk()
main_screen.geometry("300x250")
main_screen.title("Account Login")
Label(text="Select Your Choice", bg="blue", width="300", height="2", font=("Calibri", 13)).pack()
Label(text="").pack()
Button(text="Login", height="2", width="30", command = login).pack()
Button(text="Registration", height="2", width="30", command= register).pack()
Button(text="Quit", height="2", width="30", command= quit).pack()
main_screen.mainloop()
#Teacher Screen
def tStudent_Progress():
global Student_Progress_Screen
Student_Progress_Screen = Toplevel(Main_Screen)
Student_Progress_Screen.title("Student Progress")
Student_Progress_Screen.geometry("500x500")
Label(Student_Progress_Screen,text="Student Progress").pack()
#Use while loop to list buttons for registered students
def tgame():
game_intro()
#def tutorial():
#Function to Change Tutorial Links
def tMain_Screen():
global tmain_Screen
tmain_Screen = Toplevel(login_screen)
tmain_Screen.geometry("300x400")
tmain_Screen.title("Admin Interface")
Label("tmain_screen",text="Select Your Choice", bg="blue", width="300", height="2", font=("Calibri", 13)).pack()
Label(text="").pack()
## Button(text="Student Progess",height="2", width=" 30", command = tStudent_Progress).pack()
## Button(text="Game", height="2", width="30", command = tgame).pack()
## #Button(text="Tutorial",height="2",width="30", command = ttutorial).pack()
## Label(text="").pack()
## Button(text="Quit",height="2", width="30",command = quit).pack()
main_account_screen()
这是我的错误：
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\Ethan\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 1883, in __call__
return self.func(*args)
File "<string>", line 100, in login_verify
File "<string>", line 187, in tMain_Screen
File "C:\Users\Ethan\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 3143, in __init__
Widget.__init__(self, master, 'label', cnf, kw)
File "C:\Users\Ethan\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 2561, in __init__
BaseWidget._setup(self, master, cnf)
File "C:\Users\Ethan\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 2530, in _setup
self.tk = master.tk
AttributeError: 'str' object has no attribute 'tk'
我正在使用空闲，非常感谢您的帮助。这让我难过。该错误仅在访问此界面的admin部分时运行。
根据您的代码
def login_verify():
global username1
username1 = username_verify.get()
password1 = password_verify.get()
username_login_entry.delete(0, END)
password_login_entry.delete(0, END)
list_of_files = os.listdir()
if username1 in list_of_files:
file1 = open(username1, "r")
print(username1)
verify = file1.read().splitlines()
if username1 == 'admin':
tMain_Screen()
elif password1 in verify:
login_sucess()
else:
password_not_recognised()
else:
user_not_found()
声明了变量login_success的login_success_screen函数仅运行它if not username1 == 'admin'，即使您在函数login_success_screen中使用了变量tMain_Screen()。
def tMain_Screen():
global tmain_Screen
tmain_Screen = Toplevel(login_success_screen)
tmain_Screen.geometry("300x400")
tmain_Screen.title("Admin Interface")
Label("tmain_screen",text="Select Your Choice", bg="blue", width="300", height="2", font=("Calibri", 13)).pack()
Label(text="").pack()
您需要运行login_success()才能声明login_success_screen。