python - AttributeError: 'Application' 对象没有属性 'label'

Question

我的代码出现此错误，有人可以帮助我。当我将标签放置到 rand_num() 或 tool() 上时，它给出相同的错误并不重要。如何给标签赋予属性？

from tkinter import *
import random

class Application(object):
def __init__(self):
    self.rand_num()
    self.tool()

def tool(self):
    self.label = Label(fg="white", bg="#61380B", font="Helvetica 12 bold")
    self.label["text"] = self.list

    self.label.pack()
    self.open = Button(text='Hit', command=self.rand_num())
    self.open.pack()
    self.ok = Button(text='Exit', command=root.quit)
    self.ok.pack()

def rand_num(self):
    self.list = []
    for i in range(6):
        rand = random.randint(1, 49)
        if rand not in self.list:
            self.list.append(rand)
    self.list.sort()
    self.label["text"] = self.list


if __name__ == '__main__':
    root = Tk()
    root.geometry('300x100+500+100')
    app = Application()
    mainloop()

编辑:我是这样编辑的，效果很好!

from tkinter import *
import random


class Application(object):

def __init__(self):
    self.tool() #Deleted that line

def rand_num(self):
    self.list = []
    for i in range(6):
        rand = random.randint(1, 49)
        if rand not in self.list:
            self.list.append(rand)
    self.list.sort()
    self.label["text"] = self.list

def tool(self):
    self.label = Label(text='Please enter hit', #Added 'text' attribute
                       fg="white",
                       bg="#61380B",
                       font="Helvetica 12 bold")
    #Deleted that line

    self.label.pack()
    self.open = Button(text='Hit', command=self.rand_num)
    self.open.pack()
    #self.ok = Button(text='Exit', command=root.quit)
    #self.ok.pack()




if __name__ == '__main__':
    root = Tk()
    root.geometry('300x100+500+100')
    app = Application()
    mainloop()

更改的部分如上AttributeError:“应用程序”对象没有属性“标签”

Answer 1

您可以在 tool() 方法中定义 self.label。发生该错误的原因可能是您在 tool() 方法之前调用了 rand_num() 方法。