登錄後不能打開新窗口

Question

我實現了我的哈希工具的登錄窗口，但問題是我希望它被編程，當我點擊提交按鈕時，它會自動將我重定向到哈希工具窗口。現在，我必須關閉登錄頁面才能重定向到其他窗口。

import hashlib 
import Tkinter as tk 
from tkFileDialog import askopenfilename 
import sys 
from Tkinter import * 

class Start(Frame): 

    def __init__(self,master): 
     Frame.__init__(self,master) 
     self.grid() 
     self.create_widgets() 



    def create_widgets(self): 
     self.instruction = Label(self ,text ="Enter password") 
     self.instruction.grid(row = 0,column = 0, columnspan = 2,sticky =W) 

     self.password = Entry(self) 
     self.password.grid(row = 1, column = 1, sticky = W) 

     self.submit_button = Button(self, text = "Submit", command = self.reveal) 
    self.submit_button.grid(row = 2, column = 0, sticky =W) 

     self.text = Text(self, width = 35, height = 5, wrap = WORD) 
     self.text.grid(row = 3, column = 0, columnspan = 2, sticky = W) 

    def reveal(self): 
     content = self.password.get() 
     if content == "password": 
      message = "you have access to something special" 

     else:message = "denied" 
     self.text.insert(0.0,message) 


root = Tk() 
root.title("Password") 
root.geometry("250x150") 
app = Start(root) 
root.mainloop() 

class Application(object): 
    def __init__(self): 
     self.root = root = tk.Tk() 
     menubar = tk.Menu(root) 

     filemenu = tk.Menu(menubar, tearoff=0) 
     filemenu.add_command(label="Hash", command=self.hashmd5) 
     filemenu.add_command(label="Exit", command=root.quit) 

     menubar.add_cascade(label="File", menu=filemenu) 
     root.config(menu=menubar) 

    #Add a Label to hold the current filename 
     self.filename = tk.StringVar() 
     self.filename.set("No File Selected") 
     lbl = tk.Label(root, textvariable=self.filename, anchor="w") 
     lbl.pack() 

    #Add a Label to hold the most recent MD5 digest 
     self.digest = tk.StringVar() 
     lbl = tk.Label(root, textvariable=self.digest, anchor="w") 
     lbl.pack() 

     root.mainloop() 

    def hashmd5(self): 
     BLOCKSIZE = 65536 
     hasher = hashlib.md5() 
     filename = askopenfilename(parent=self.root) 
     self.filename.set(filename) 
     print(filename) 

     with open(filename, 'rb') as afile: 
      buf = afile.read(BLOCKSIZE) 
      while len(buf) > 0: 
       hasher.update(buf) 
       buf = afile.read(BLOCKSIZE) 
       digest = hasher.hexdigest() 
       self.digest.set(digest) 
       print(digest) 

Application() 

Answer 1

您可以使用root.destroy使得第一主循環退出：

def reveal(self): 
    content = self.password.get() 
    if content == "password": 
     root.destroy() # <--- 
    else: 
     message = "denied" 
     self.text.insert(0.0,message) 

---

UPDATE防止散列除非正確的密碼輸入窗口訪問。

添加屬性，檢查認證是否已完成：

class Start(Frame): 
    def __init__(self, master): 
     self.authenticated = False # <--- 
     Frame.__init__(self,master) 
     self.grid() 
     self.create_widgets() 

    def create_widgets(self): 
     .... 

    def reveal(self): 
     content = self.password.get() 
     if content == "password": 
      self.authenticated = True # <--- 
      root.destroy() 
     else: 
      message = "denied" 
      self.text.insert(0.0,message) 

，除非認證退出程序：

root = Tk() 
root.title("Password") 
root.geometry("250x150") 
app = Start(root) 
root.mainloop() 

if not app.authenticated: # <--- 
    sys.exit()    # <--- 

...