如果给定的条件为真，如何打开窗口？

Question

我有一个类似于登录系统的东西。因此，如果用户使用正确的用户名和密码登录，他将被传递到我的项目（main.py）。我使用了tkinter，在我的顺序中有两个文件：一个是日志系统（logging.py），一个是我的项目(main.py）。因此，当用户名和密码正确时，我想打开我的main。（正如您在my main.py代码中看到的，它是一个电子邮件存储）

我试过：

import tkinter as tk
import main

def login():
    username = entry_username.get()
    passwort = entry_passwort.get()

    if username == "username" and passwort == "passwort123":
        main_window = tk.Toplevel(main) 
        main_window.mainloop()

但它不工作，我不知道如何才能打开我的主要，如果登录是正确的

logging.py中的完整代码：

import tkinter as tk
import main


def login():
  username = entry_username.get()
  passwort = entry_passwort.get()

if username == "username" and passwort == "passwort123":
    main_window = tk.Toplevel(main)
    main_window.mainloop()



root = tk.Tk()


canvas = tk.Canvas(height=500, width=500)
canvas.pack()

# FRAME 
frame_username = tk.Frame(root, bg="red")
frame_username.place(relx=0.45, rely=0.5, relwidth=0.3, relheight=0.07,             
anchor="e")

frame_passwort = tk.Frame(root, bg="yellow")
frame_passwort.place(relx=0.55, rely=0.5, relwidth=0.3, relheight=0.07,     
anchor="w")

frame_button = tk.Frame(root, bg="green")
frame_button.place(relx=0.44, rely=0.7, relwidth=0.13, relheight=0.11)


#  prints above the entry form mail " mail " and from passwort " password"
frame_username_text = tk.Frame(root)
frame_username_text.place(relx=0.45, rely=0.4, relwidth=0.3, 
relheight=0.07, anchor="e")

frame_passwort_text = tk.Frame(root)
frame_passwort_text.place(relx=0.55, rely=0.4, relwidth=0.3, 
relheight=0.07, anchor="w")

# ENTRY USERNAME / PASSWORT
entry_username = tk.Entry(frame_username)
entry_username.place(relwidth=1, relheight=1)

entry_passwort = tk.Entry(frame_passwort)
entry_passwort.place(relwidth=1, relheight=1)

#Button
login_button = tk.Button(frame_button, text = "sign in", font=    
(8),bg="#33cc33", fg="white", command=login)
login_button.place(relwidth=1, relheight=1)



#just assigns mail to mail and passwort to password

# EMAIL LABEL
label_username = tk.Label(frame_username_text, text = "Username", font=(10) 
)
label_username.place(relwidth=1, relheight=1)

# PASSWORT LABEL
label_passwort = tk.Label(frame_passwort_text, text = "Passwort", font= 
(10))
label_passwort.place(relwidth=1, relheight=1)

if __name__ == "__main__":
   pass


root.mainloop()

这是我在main.py中的代码：

import tkinter as tk


def save_info():
    mail = entry_mail.get()
    passwort = entry_passwort.get()
    entry_mail.delete(0, tk.END)
    entry_passwort.delete(0, tk.END)

label_list["text"]=str(mail)+" | "+str(password)



root = tk.Tk()

canvas = tk.Canvas(height=500, width=500)
canvas.pack()

# EMAIL ENTRY
entry_mail = tk.Entry(root)
# entry_mail.insert(0,"Type your Mail...")
entry_mail.place(relx=0.45, rely=0.2, relwidth=0.3, relheight=0.07, 
anchor="e")

# PASSWORT ENTRY
entry_passwort = tk.Entry(root)
entry_passwort.place(relx=0.55, rely=0.2, relwidth=0.3, relheight=0.07, 
anchor="w")


# PASSWORT FRAME
frame_passwort = tk.Frame(root)
frame_passwort.place(relx=0.55, rely=0.1, relwidth=0.3, relheight=0.07, 
anchor="w")

# EMAIL FRAME
frame_mail = tk.Frame(root)
frame_mail.place(relx=0.45, rely=0.1, relwidth=0.3, relheight=0.07, 
anchor="e")

# BUTTON FRAME
frame_button = tk.Frame(root, bg="yellow")
frame_button.place(relx=0.88, rely=0.165, relwidth=0.1, relheight=0.07)

# LIST FRAME
frame_list = tk.Frame(root, bg="gray",bd=10)
frame_list.place(relx=0.5, rely=0.3, relwidth=0.75, relheight=0.5, 
anchor="n")


# EMAIL LABEL
label_mail = tk.Label(frame_mail, text = "E-Mail")
label_mail.place(relwidth=1, relheight=1)

# PASSWORT LABEL
label_passwort = tk.Label(frame_passwort, text = "Passwort")
label_passwort.place(relwidth=1, relheight=1)

# LIST LABEL
label_list = tk.Label(frame_list, anchor="nw", justify="left" )
label_list.place(relwidth=1, relheight=1)


# SAVE BUTTON
button_save = tk.Button(frame_button, text="save",command=save_info)
button_save.place(relwidth=1, relheight=1)

if __name__ == "__main__":
    pass




root.mainloop()

Answer 1

我对你的代码做了几处修改，它工作得非常完美（终端中只有一些红线，但这没关系，因为它实际上没有任何意义）。见：

Login.py代码：

import tkinter as tk

username = ""
passwort = ""

def login():
  username = entry_username.get()
  passwort = entry_passwort.get()

  if username == "username" and passwort == "passwort123":
    import main
    toplevel = tk.Toplevel(main)
  
root = tk.Tk()

canvas = tk.Canvas(height=500, width=500)
canvas.pack()

# FRAME 
frame_username = tk.Frame(root, bg="red")
frame_username.place(relx=0.45, rely=0.5, relwidth=0.3, relheight=0.07,             
anchor="e")

frame_passwort = tk.Frame(root, bg="yellow")
frame_passwort.place(relx=0.55, rely=0.5, relwidth=0.3, relheight=0.07,     
anchor="w")

frame_button = tk.Frame(root, bg="green")
frame_button.place(relx=0.44, rely=0.7, relwidth=0.13, relheight=0.11)

#  prints above the entry form mail " mail " and from passwort " password"
frame_username_text = tk.Frame(root)
frame_username_text.place(relx=0.45, rely=0.4, relwidth=0.3, 
relheight=0.07, anchor="e")

frame_passwort_text = tk.Frame(root)
frame_passwort_text.place(relx=0.55, rely=0.4, relwidth=0.3, 
relheight=0.07, anchor="w")

# ENTRY USERNAME / PASSWORT
entry_username = tk.Entry(frame_username)
entry_username.place(relwidth=1, relheight=1)

entry_passwort = tk.Entry(frame_passwort)
entry_passwort.place(relwidth=1, relheight=1)

#Button
login_button = tk.Button(frame_button, text = "sign in", font=    
(8),bg="#33cc33", fg="white", command=login)
login_button.place(relwidth=1, relheight=1)

#just assigns mail to mail and passwort to password

# EMAIL LABEL
label_username = tk.Label(frame_username_text, text = "Username", font=(10) 
)
label_username.place(relwidth=1, relheight=1)

# PASSWORT LABEL
label_passwort = tk.Label(frame_passwort_text, text = "Passwort", font= 
(10))
label_passwort.place(relwidth=1, relheight=1)

if __name__ == "__main__":
   pass

root.mainloop()

问题是输入错误，是的，您应该在条件之后导入main

main.py代码：

import tkinter as tk

mail = ""
password = ""
    
def save_info():
    mail = entry_mail.get()
    passwort = entry_passwort.get()
    entry_mail.delete(0, tk.END)
    entry_passwort.delete(0, tk.END)

#label_list = ["text"]=str(mail)+" | "+str(password)

root = tk.Tk()

canvas = tk.Canvas(height=500, width=500)
canvas.pack()

# EMAIL ENTRY
entry_mail = tk.Entry(root)
# entry_mail.insert(0,"Type your Mail...")
entry_mail.place(relx=0.45, rely=0.2, relwidth=0.3, relheight=0.07, 
anchor="e")

# PASSWORT ENTRY
entry_passwort = tk.Entry(root)
entry_passwort.place(relx=0.55, rely=0.2, relwidth=0.3, relheight=0.07, 
anchor="w")

# PASSWORT FRAME
frame_passwort = tk.Frame(root)
frame_passwort.place(relx=0.55, rely=0.1, relwidth=0.3, relheight=0.07, 
anchor="w")

# EMAIL FRAME
frame_mail = tk.Frame(root)
frame_mail.place(relx=0.45, rely=0.1, relwidth=0.3, relheight=0.07, 
anchor="e")

# BUTTON FRAME
frame_button = tk.Frame(root, bg="yellow")
frame_button.place(relx=0.88, rely=0.165, relwidth=0.1, relheight=0.07)

# LIST FRAME
frame_list = tk.Frame(root, bg="gray",bd=10)
frame_list.place(relx=0.5, rely=0.3, relwidth=0.75, relheight=0.5, 
anchor="n")

# EMAIL LABEL
label_mail = tk.Label(frame_mail, text = "E-Mail")
label_mail.place(relwidth=1, relheight=1)

# PASSWORT LABEL
label_passwort = tk.Label(frame_passwort, text = "Passwort")
label_passwort.place(relwidth=1, relheight=1)

# LIST LABEL
label_list = tk.Label(frame_list, anchor="nw", justify="left" )
label_list.place(relwidth=1, relheight=1)

# SAVE BUTTON
button_save = tk.Button(frame_button, text="save", command=save_info)
button_save.place(relwidth=1, relheight=1)

root.mainloop()

是的。。。。。可能会有更多的错误，因为您的代码不清楚（imo），所以这是我理解和编写的