Question

我对python相对较新，作为一个小项目，我一直在尝试使用tkinter将基本gui应用于我的caesar密码程序。我有点理解什么是错的，但不知道如何解决它。任何帮助或指导将不胜感激。

from tkinter import *
from logos import *        

class MainMenu():

    def __init__(self,master):

        self.master = master
        self.master.geometry("500x500")
        self.master.title("L337 H4X0R")
        self.master.configure(bg = "#303030 ")

        self.button = Button(self.master, text = "Encrypt", fg = "green", bg = 'black', command = self.goToEncrypt).place(x=100, y=150)
        self.button = Button(self.master, text = "Decrypt", fg = "green", bg = "black", command = self.goToDecrypt).place(x=250, y=150)
        self.button = Button(self.master, text = "Hack", fg = "green", bg = "black", command = self.goToHacks).place(x=400, y=150)


    def goToEncrypt(self):
        self.master.withdraw()
        root2 = Toplevel(self.master)
        GUII = Encipher(root2)

    def goToDecrypt(self):
        #root3 = Toplevel(self.master)
        #GUII = Decipher(root3)
        pass

    def goToHacks(self):
        #root4 = Toplevel(self.master)
        #GUIIkiv = HAXOR(root4)
        pass


class Encipher():

    def __init__(self,master):

        self.key = IntVar()
        self.message = StringVar()

        self.master = master
        self.master.geometry("500x500")
        self.master.title("L337 H4X0R")
        self.master.configure(bg = "#303030 ")

        self.label1 = Label(self.master, text="Key",bg = "black", fg = "green").place(x=20, y = 40)
        self.label2 = Label(self.master, text = "Input",bg = "black", fg = "green").place(x=20, y =120)
        self.label3 = Label(self.master, text = "Output", bg = "black", fg ="green").place(x=300, y= 120)
        self.spinbox= Spinbox(self.master,from_=1, to=61, state = NORMAL, textvariable = self.key, bg ="black", fg="green").place(x=100, y=40)
        self.text = Text(self.master, bg = "white", wrap = WORD, height = 15, width = 20).place(x= 20, y=150)
        self.text2 = Text(self.master, bg = "white", wrap = WORD, height = 15, width = 20, state = DISABLED).place(x= 300, y=150)
        self.button = Button(self.master, text = "Enter", bg = "black", fg = "green", command = self.enter).place(x = 20, y=400)

    def enter(self):
        self.message = self.text.get('0.0', END+"-1c")
        self.text2(self.master, state=NORMAL)
        self.text2.insert(self.master,'1.0', text=encrypt(self.message, self.key))
        self.text2(self.master, state=DISABLED)

def main():
    root = Tk()
    GUI = MainMenu(root)
    root.mainloop()

if __name__ == "__main__":
    main()

当我按下回车按钮时，它会显示以下信息：

C:\Users\Karl\Documents\Python>app.py
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Programming\Python\lib\tkinter\__init__.py", line 1482, in __call__
    return self.func(*args)
  File "C:\Users\Karl\Documents\Python\App.py", line 56, in enter
    self.message = self.text.get('0.0', END+"-1c")
AttributeError: 'NoneType' object has no attribute 'get'

Answer 1

请注意，您这样做：

self.text = Text(self.master, bg = "white", wrap = WORD, height = 15, width = 20).place(x= 20, y=150)

所以在self.text中，您不是存储Text对象，而是存储place方法的结果（None）。

你应该这样做：

self.text = Text(self.master, bg = "white", wrap = WORD, height = 15, width = 20)
self.text.place(x= 20, y=150)

对于您在同一行中创建和调用place()的所有其他地方也是如此

Python AttributeError：'NoneType'对象没有属性'get'

1 个答案: