Tkボタンでエラーが発生する：

Question

私のコード内の問題は、topLevel()ウィンドウの送信ボタンをクリックすると、タイトルにエラーが表示されるということです。もし私がを入れようとすると、submit_buttonがtopLevel()の一部ではないというエラーがスローされます。私はstackoverflow全体を検索しましたが、これに似た問題は見つかりませんでした。私はPythonのGUIプログラミングには新しく、本当に助けに感謝します。

class SampleApp(tk.Tk): 
    def __init__(self): 
     tk.Tk.__init__(self) 

     self.KTitle = tk.Label(self, text="Login ") 
     self.KTitle.grid(row=7,column=0, columnspan=2) 
     self.KUsername = tk.Label(self, text="Username: ") 
     self.KUsername.grid(row=8,column=0, sticky=E) 
     self.KPassword = tk.Label(self, text="Password: ") 
     self.KPassword.grid(row=9,column=0, sticky=E) 
     self.KUEntry = tk.Entry(self, width=15) 
     self.KUEntry.grid(row=8,column=1, sticky=E) 
     self.KUPass = tk.Entry(self, width=15) 
     self.KUPass.grid(row=9,column=1, sticky=E) 

     self.KUSubmit = tk.Button(self, text="Submit") 
     self.KUSubmit.grid(row=10, column=0, columnspan=2) 

     self.KTitle = tk.Label(self, text=" or ") 
     self.KTitle.grid(row=11,column=0, columnspan=2) 

     self.KUSubmit = tk.Button(self, text="Create an Account", command=self.create_button) 
     self.KUSubmit.grid(row=12, column=0, columnspan=2) 

    def create_button(self): 

     top = Toplevel() 

     top.TitleHead = tk.Label(top, text="Create an Account ") 
     top.TitleHead.grid(row=0,column=2, columnspan=3) 

     #userInput 
     top.f_name = tk.Label(top, text="First Name: ") 
     top.f_name.grid(row=1,column=2, sticky=W) 
     top.Entry1 = tk.Entry(top, width=15) 
     top.Entry1.grid(row=1,column=3, sticky=W) 
     top.l_name = tk.Label(top, text="Last Name: ") 
     top.l_name.grid(row=2,column=2, sticky=W) 
     top.Entry2 = tk.Entry(top,width=15) 
     top.Entry2.grid(row=2,column=3, sticky=W) 
     top.username = tk.Label(top, text="Username: ") 
     top.username.grid(row=3,column=2, sticky=W) 
     top.Entry3 = tk.Entry(top, width=15) 
     top.Entry3.grid(row=3,column=3, sticky=W) 
     top.Ptoken = tk.Label(top, text="Password: ") 
     top.Ptoken.grid(row=4,column=2, sticky=W) 
     top.Entry4 = tk.Entry(top, width=15) 
     top.Entry4.grid(row=4,column=3, sticky=W) 

     top.Submit = tk.Button(top, text="Submit", command=submit_button) 
     top.Submit.grid(row=5, column=2, columnspan=2) 

    def submit_button(top): 

     x = top.Entry4.get() 
     salt = uuid.uuid4().hex 
     hashed_password = hashlib.sha512(x + salt).hexdigest() 

     add = ("INSERT INTO User " 
       "(ID, username, f_name, l_name, salt, PashHash) " 
       "VALUES (%s, %s, %s, %s, %s, %s)") 

     ID = int(0) 
     username = top.Entry3.get() 
     f_name = top.Entry1.get() 
     l_name = top.Entry2.get() 
     salt = salt 
     PashHash = hashed_password 

     data = (ID , top.username , top.f_name , top.l_name, salt, PashHash) 

     cursor.execute(add, data) 
     cnx.commit() 

app = SampleApp() 
app.mainloop() 

Answer 1

問題は、（第2）KUSubmitボタンにコールバック関数を設定する方法です。まず、SampleAppクラスのメソッドなので、自動的にself引数を受け取ります。

第2引数が引数を渡しています。これは実行できますが、この場合はself.top属性に値を保存し、自動self引数を使用してメソッドの値を取得する方が簡単です。

私はこれらの行に沿って以下のコードショーに変更を加えました。詳細については、# CHANGEDコメントの行を参照してください。

import Tkinter as tk 
from Tkinter import * 

class SampleApp(tk.Tk): 
    def __init__(self): 
     tk.Tk.__init__(self) 

     self.KTitle = tk.Label(self, text="Login ") 
     self.KTitle.grid(row=7,column=0, columnspan=2) 
     self.KUsername = tk.Label(self, text="Username: ") 
     self.KUsername.grid(row=8,column=0, sticky=E) 
     self.KPassword = tk.Label(self, text="Password: ") 
     self.KPassword.grid(row=9,column=0, sticky=E) 
     self.KUEntry = tk.Entry(self, width=15) 
     self.KUEntry.grid(row=8,column=1, sticky=E) 
     self.KUPass = tk.Entry(self, width=15) 
     self.KUPass.grid(row=9,column=1, sticky=E) 

     self.KUSubmit = tk.Button(self, text="Submit") 
     self.KUSubmit.grid(row=10, column=0, columnspan=2) 

     self.KTitle = tk.Label(self, text=" or ") 
     self.KTitle.grid(row=11,column=0, columnspan=2) 

     self.KUSubmit = tk.Button(self, text="Create an Account", 
            command=self.create_button) 
     self.KUSubmit.grid(row=12, column=0, columnspan=2) 

    def create_button(self): 

     self.top = top = Toplevel() # CHANGED 

     top.TitleHead = tk.Label(top, text="Create an Account ") 
     top.TitleHead.grid(row=0,column=2, columnspan=3) 

     #userInput 
     top.f_name = tk.Label(top, text="First Name: ") 
     top.f_name.grid(row=1,column=2, sticky=W) 
     top.Entry1 = tk.Entry(top, width=15) 
     top.Entry1.grid(row=1,column=3, sticky=W) 
     top.l_name = tk.Label(top, text="Last Name: ") 
     top.l_name.grid(row=2,column=2, sticky=W) 
     top.Entry2 = tk.Entry(top,width=15) 
     top.Entry2.grid(row=2,column=3, sticky=W) 
     top.username = tk.Label(top, text="Username: ") 
     top.username.grid(row=3,column=2, sticky=W) 
     top.Entry3 = tk.Entry(top, width=15) 
     top.Entry3.grid(row=3,column=3, sticky=W) 
     top.Ptoken = tk.Label(top, text="Password: ") 
     top.Ptoken.grid(row=4,column=2, sticky=W) 
     top.Entry4 = tk.Entry(top, width=15) 
     top.Entry4.grid(row=4,column=3, sticky=W) 

     top.Submit = tk.Button(top, text="Submit", command=self.submit_button) 
     top.Submit.grid(row=5, column=2, columnspan=2) 

    def submit_button(self): # CHANGED 

     x = self.top.Entry4.get() # CHANGED 
     salt = uuid.uuid4().hex 
     hashed_password = hashlib.sha512(x + salt).hexdigest() 

     add = ("INSERT INTO User " 
       "(ID, username, f_name, l_name, salt, PashHash) " 
       "VALUES (%s, %s, %s, %s, %s, %s)") 

     ID = int(0) 
     username = top.Entry3.get() 
     f_name = top.Entry1.get() 
     l_name = top.Entry2.get() 
     salt = salt 
     PashHash = hashed_password 

     data = (ID , top.username , top.f_name , top.l_name, salt, PashHash) 

     cursor.execute(add, data) 
     cnx.commit() 

app = SampleApp() 
app.mainloop()