guizero / tkinter PushButton NameError guizero PushButton.py

Question

我是Python，试图结合我通过教程学到的一些东西，特别是用guizero制作一个GUI。

我创建了一个名为TextBox的player_name对象和一个名为create_story的PushButton对象。我的目标是在文本框为空时禁用该按钮，并在输入到该框中时启用该按钮。

guizero文档将“启用()”和“禁用()”作为附加到PushButton的方法列出，但没有详细说明：https://lawsie.github.io/guizero/pushbutton/#methods

目前为止的完整代码：

import random
from guizero import App, Text, TextBox, PushButton, ButtonGroup, Combo, Box

def print_story():
    print("Button Pressed")

app = App(title="Visual Adventure", width=550, height=400,)

hello_message = Text(app, text="Hello, Traveler", size=20, color="red")
story_message = Text(app, text="Would you like to hear a tale?", size=14, color="black")

# organize into box with grid
selections = Box(app, layout="grid")

# text for questions
name_ques = Text(selections, text="What is your name?", size=10, color="black", grid=[0,0], align="left")
gender_ques = Text(selections, text="Boy or a girl?", size=10, color="black", grid=[0,2], align="left")
day_ques = Text(selections, text="What day is it?", size=10, color="black", grid=[0,4], align="left")

# text for grid padding
pad1 = Text(selections, text="        ", size=10, grid=[0,1], align="left")
pad2 = Text(selections, text="        ", size=10, grid=[0,3], align="left")

# interactive objects
player_name = TextBox(selections, width=15, grid=[1,0], align="top")
player_gender = ButtonGroup(selections, options=[ ["Boy", "He"], ["Girl", "She"] ], selected="He", horizontal=True, grid=[1,2], align="top")
day_set = Combo(selections, options=["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"], selected="Monday", grid=[1,4], align="top")

create_story = PushButton(app, command=print_story, text="Tell me!")

if not player_name.get():
    create_story.disable()
elif player_name.get():
    create_story.enable()

app.display()

错误：

Traceback (most recent call last):
  File "/home/pi/Desktop/python/VisualAdventure.py", line 32, in <module>
    create_story.disable()
  File "/usr/local/lib/python3.4/dist-packages/guizero/PushButton.py", line 59, in disable
    self.config(state=DISABLED)
NameError: name 'DISABLED' is not defined

Answer 1

恭喜你，你发现了一个窃听器。如一揽子计划所述：

这是一个预发布版本，所以可能会有bug和特性可能会改变。

由于guizero仍然处于alpha版本，所以仍然存在bug。做出这一错误的具体承诺是：https://github.com/lawsie/guizero/commit/236064b8781c298a87954775daed65cb384d04f4 (实际上，没有犯任何错误，实际上是在lawsie 合并的拉请求时).As，你可以看到这里，那个人忘了导入tkinter.DISABLE和tkinter.ENABLE。

您可以在这里报告这个问题:希望https://github.com/lawsie/guizero/issues很快就会改变它，因为这是一个非常容易的解决方法。

Answer 2

使用以下方式绕过它: create_story"state“=”禁用“等