Python - AttributeError：'str'对象没有属性'items'

Question

我是Tkinter 的初学者。我正在尝试制作一个电话簿 GUI 应用程序。

所以，我才刚刚开始，这是我的源代码：

#This is my python 'source.py' for learning purpose

from tkinter import Tk
from tkinter import Button
from tkinter import LEFT
from tkinter import Label
from tkinter import Frame
from tkinter import Pack

wn = Tk()
f = Frame(wn)

b1 = Button(f, "One")
b2 = Button(f, "Two")
b3 = Button(f, "Three")

b1.pack(side=LEFT)
b2.pack(side=LEFT)
b3.pack(side=LEFT)

l = Label(wn, "This is my label!")

l.pack()
l.pack()

wn.mainloop()

当我运行时，我的程序给出了以下错误：

/usr/bin/python3.4 /home/rajendra/PycharmProjects/pythonProject01/myPackage/source.py
Traceback (most recent call last):
  File "/home/rajendra/PycharmProjects/pythonProject01/myPackage/source.py", line 13, in <module>
    b1 = Button(f, "One")
  File "/usr/lib/python3.4/tkinter/__init__.py", line 2164, in __init__
    Widget.__init__(self, master, 'button', cnf, kw)
  File "/usr/lib/python3.4/tkinter/__init__.py", line 2090, in __init__
    classes = [(k, v) for k, v in cnf.items() if isinstance(k, type)]
AttributeError: 'str' object has no attribute 'items'

Process finished with exit code 1

谁能告诉我这里出了什么问题？

我们将不胜感激！

Answer 1

你需要说 tkinter，那些 "One"、"Two" 等是什么。

Button(f, text="One")
Label(wn, text="This is my label!")

要回答你为什么需要它，你应该检查函数和参数在 python 中是如何工作的。

另外，您可能想要打包您的Frame，因为您的所有按钮都在上面，您可以使用"left" 而不是tkinter.LEFT

Answer 2

你是这个意思吗？

from tkinter import Tk
from tkinter import Button
from tkinter import LEFT
from tkinter import Label
from tkinter import Frame
from tkinter import Pack

wn = Tk()
f = Frame(wn)

b1 = Button(f, text="One")# see that i added the text=
# you need the text="text" instead of just placing the text string 
# Tkinter doesn't know what the "One","Two",... is for.
b2 = Button(f, text="Two")
b3 = Button(f, text="Three")

b1.pack(side=LEFT)
b2.pack(side=LEFT)
b3.pack(side=LEFT)

l = Label(wn, "This is my label!")

l.pack()
l.pack()

wn.mainloop()