位置参数类型错误 python tkinter

Question

我想运行与可点击按钮和键绑定 Return 相同。这可能吗？我不断收到与您在下面看到的相同的错误：

当我删除 self.bind 时，它会正常工作。

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python34\lib\tkinter\__init__.py", line 1533, in __call__
    return self.func(*args)
TypeError: search_button() takes 1 positional argument but 2 were given

代码：

from tkinter import *

class Search(Tk):
    def __init__(self):
        Tk.__init__(self)

        self.bind("<Return>", self.search_button)

        self.search_bar = Frame(self, bg="blue")
        self.search_bar.pack(side=TOP, fill=X)
        self.index = Frame(self, width=100)
        self.index.pack(side=LEFT)
        self.content = Frame(self, bg="red")
        self.content.pack(side=LEFT, fill=X)
        self.status_bar = Frame(self, bg="green")
        self.status_bar.pack(side=BOTTOM, fill=X)

        self.entry = Entry(self.search_bar)
        self.entry.pack(side=LEFT, padx=4, pady=4)
        self.search = Button(self.search_bar, text="Search", command=self.search_button)
        self.search.pack(side=LEFT)
        self.content = Label(self.content, text="DUPA")
        self.content.pack(side=LEFT)
        self.status_bar = Label(self.status_bar, text="DUPA")
        self.status_bar.pack(side=LEFT)

    def search_button(self):
        (self.entry.get())
        if self.entry.get() == 'example1':
            print("lorem ipsum")

Answer 1

search_button() 需要能够从绑定中获取 event 参数：

def search_button(self, event=None):
        (self.entry.get())
        if self.entry.get() == 'example1':
            print("lorem ipsum")

位置参数类型错误 python tkinter

Positional Argument TypeError python tkinter

python

tkinter

python-3.x