GUI编程

Question

当我运行GUI程序时，出现一个错误，提示“ automotive = Automotive（），第63行”的属性错误是“ Automotive没有属性'show_choice'”。 但是在下面的程序中，它已明确说明。 为什么这样说，我该如何解决？

这是我到目前为止（遇到麻烦的地方）的GUI程序：

def show_choice(self):
    self.message = 'You selected:\n'

    if self.cb_var1.get() == 1:
        self.message = self.message + '1\n'
    if self.cb_var2.get() == 1:
        self.message = self.message + '2\n'
    if self.cb_var3.get() == 1:
        self.message = self.message + '3\n'
    if self.cb_var4.get() == 1:
        self.message = self.message + '4\n'
    if self.cb_var5.get() == 1:
        self.message = self.message + '5\n'
    if self.cb_var6.get() == 1:
        self.message = self.message + '6\n'
    if self.cb_var7.get() == 1:
        self.message = self.message + '7\n'

#Display the message in the info box.

        tkinter.messagebox.showinfo('Selection', self.message)

#Create an instance for My Gui class.

automotive = Automotive()

Answer 1

您的方法很可能过度缩进，即：

class Automotive():
    def __init__(self):
        ....
        def show_choice(self):
            self.message = 'You selected:\n'

            if self.cb_var1.get() == 1:
                self.message = self.message + '1\n'
            if self.cb_var2.get() == 1:
                self.message = self.message + '2\n'
            if self.cb_var3.get() == 1:
                self.message = self.message + '3\n'
            if self.cb_var4.get() == 1:
                self.message = self.message + '4\n'
            if self.cb_var5.get() == 1:
                self.message = self.message + '5\n'
            if self.cb_var6.get() == 1:
                self.message = self.message + '6\n'
            if self.cb_var7.get() == 1:
                self.message = self.message + '7\n'

要么：

class Automotive():
    def __init__(self):
        ....
def show_choice(self):
    self.message = 'You selected:\n'

    if self.cb_var1.get() == 1:
        self.message = self.message + '1\n'
    if self.cb_var2.get() == 1:
        self.message = self.message + '2\n'
    if self.cb_var3.get() == 1:
        self.message = self.message + '3\n'
    if self.cb_var4.get() == 1:
        self.message = self.message + '4\n'
    if self.cb_var5.get() == 1:
        self.message = self.message + '5\n'
    if self.cb_var6.get() == 1:
        self.message = self.message + '6\n'
    if self.cb_var7.get() == 1:
        self.message = self.message + '7\n'

def应该与init def的缩进相同：

class Automotive():
    def __init__(self):
        ....
    def show_choice(self):
        self.message = 'You selected:\n'

        if self.cb_var1.get() == 1:
            self.message = self.message + '1\n'
        if self.cb_var2.get() == 1:
            self.message = self.message + '2\n'
        if self.cb_var3.get() == 1:
            self.message = self.message + '3\n'
        if self.cb_var4.get() == 1:
            self.message = self.message + '4\n'
        if self.cb_var5.get() == 1:
            self.message = self.message + '5\n'
        if self.cb_var6.get() == 1:
            self.message = self.message + '6\n'
        if self.cb_var7.get() == 1:
            self.message = self.message + '7\n'