Python - Tkinter - GUI

问题描述

我正在使用 Python 为我当前的项目创建一个新应用程序.这是我第一次使用它，这是一个学习经验......

I'm creating a new application for my current project using Python. This is the first time I use it and it has been a learning experience...

我的应用程序中有一个按钮可以从 Python 调用 askcolor() 函数.第一次一切正常，但之后，它给了我以下错误.

I have a button in my application that calls the askcolor() function from Python. Everything works fine the first time but after that, it gives me the following error.

AttributeError: 'str' object has no attribute 'set'

这是我在我的应用程序中工作的顺序:

This is the sequence that I have working in my application:

1. 用户点击选择颜色按钮:

self.bc_bttn=Button(self, text='Select Color', command=lambda: self.callback())

函数调用了callback函数，我选择了合适的颜色

The function calls the callback function and I select the proper color

def callback(self):
     (triple, hexstr) = askcolor()
     if triple:
         triple_string = str(triple)
         triple_string2 = re.findall('[0-9, ]',triple_string);
         triple_bkgColor = ''.join(triple_string2)
         print triple_bkgColor
         self.overlayColorValue.set(triple_bkgColor)

self.overlayColorValue.set(triple_bkgColor) 更改文本字段条目的值，以便用户在应用程序上看到正确的值

self.overlayColorValue.set(triple_bkgColor) changes the value of the text field entry so the user will see the correct value on the application

我按下保存按钮

self.overlayColorValue = self.bc_ent.get()
body.set('overlay-color', self.overlayColorValue)

我的更改已写入 xml 文件

My changes are written to the xml file

tree.write(CONFIG_XML)

这次一切正常，但如果我想再次做同样的事情来改变颜色.然后当我单击 Select Color 按钮

AttributeError: 'str' object has no attribute 'set'

推荐答案

您将 self.overlayColorValue 属性替换为 self.bc_ent.get() 的返回值，这是一个 str.

You replaced your self.overlayColorValue attribute with the return value of self.bc_ent.get(), which is a str.

据推测，在那之前，它是一个标签，而您想在其上调用 .set() :

Presumably, before that time, it was a label, and you wanted to call .set() on it instead:

self.overlayColorValue.set(self.bc_ent.get())
body.set('overlay-color', self.overlayColorValue.get())

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