Question

我有一个用于cookie点击器的代码块，但是当我尝试将它放在一个类中时它不起作用，给我这个错误

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\Travi\AppData\Local\Programs\Python\Python36-
32\lib\tkinter\__init__.py", line 1699, in __call__
    return self.func(*args)
TypeError: click() missing 1 required positional argument: 'self'

我不明白为什么它不起作用我的代码如下

from tkinter import*
import os
root = Tk()
class Main():
    os.chdir('C:\\Users\\Travi\\Downloads')
    cookies = 0
    grandmas =0
    gmaprice = 10

    cookiesIcon = Label(root,text = "Cookies you have:"+str(cookies))
    cookiesIcon.grid(row = 1,column = 0)
    gma = Label(root,text = "Grandmas you have:"+str(grandmas))
    gma.grid(row = 0, column = 1)
    def click(self):
        global cookies,cookiesIcon
        cookies+=1
        cookiesIcon.config(text = "Cookies you have:"+str(cookies))
    def grandma(self):
        global cookies,grandmas,cookiesIcon,gma,gmaprice
        if cookies>gmaprice:
            grandmas+=1
            cookies-=gmaprice
            gmaprice+=5
            cookies.config(text = "Cookies you have:"+str(cookies))
            gma.config(text = "Grandmas you have:"+str(grandmas))
    photo=PhotoImage(file = "Cookies.gif")
    b = Button(root,command =click)
    b.config(image=photo)
    b.grid()
    gmaupgrade=Button(root,command =grandma,text = "Grandmas for sale")
    gmaupgrade.grid(column = 1, row = 1)
    root.mainloop()

Answer 1

正如评论中所提到的，你必须首先更好地理解python（以及一般）中的类是如何工作的。

我已经纠正了代码中的一系列错误;那就是：
- 添加一个``函数来初始化类属性 - 删除了无用的global语句;所有类属性都可以在类中访问 - 更正了一些错误使用的变量（cookies i / o cookiesIcon和grandma i / o gma）

from tkinter import*
import os
root = Tk()

class Main():

    def __init__(self):
#         os.chdir('C:\\Users\\Travi\\Downloads')
        self.cookies = 0
        self.grandmas =0
        self.gmaprice = 10

        self.cookiesIcon = Label(root,text = "Cookies you have:"+str(self.cookies))
        self.cookiesIcon.grid(row=1, column=0)
        self.gma = Label(root,text = "Grandmas you have:"+str(self.grandmas))
        self.gma.grid(row = 0, column = 1)

#        photo=PhotoImage(file = "Cookies.gif")
        b = Button(root, command=self.click)
#        b.config(image=photo)
        b.grid()

        self.gmaupgrade=Button(root,command=self.grandma, text = "Grandmas for sale")
        self.gmaupgrade.grid(column = 1, row = 1)
        root.mainloop()

    def click(self):
        self.cookies += 1
        self.cookiesIcon.config(text = "Cookies you have:"+str(self.cookies))

    def grandma(self):
        if self.cookies > self.gmaprice:
            self.grandmas += 1
            self.cookies -= self.gmaprice
            self.gmaprice += 5
            self.cookiesIcon.config(text="Cookies you have:" + str(self.cookies))
            self.gma.config(text="Grandmas you have:" + str(self.grandmas))


Main()

我希望这能让您了解自己需要做什么，以及了解更多信息的愿望。

如何在班级

1 个答案: