Python未绑定方法TypeError [英] Python Unbound Method TypeError

问题描述

方法get_pos应该可以捕获用户在条目中输入的内容.执行get_pos时，它返回:

The method get_pos is supposed to grab what the user inputs in the entry. When get_pos is executed, it returns with:

TypeError:未绑定方法get_pos()必须以应用程序实例作为第一个参数来调用(取而代之的是

TypeError: unbound method get_pos() must be called with app instance as first argument (got nothing instead)

代码:

class app(object):
    def __init__(self,root):
        self.functionframe=FunctionFrame(root, self)
            self.functionframe.pack(side=BOTTOM)
    def get_pos(self):
        self.functionframe.input(self)
class FunctionFrame(Frame):
    def __init__(self,master,parent):
        Frame.__init__(self,master,bg="grey90")
        self.entry = Entry(self,width=15)
        self.entry.pack
    def input(self):
        self.input = self.entry.get()
        return self.input

推荐答案

您报告了此错误:

TypeError:未绑定方法get_pos()必须以应用程序实例作为第一个参数来调用(取而代之的是

TypeError: unbound method get_pos() must be called with app instance as first argument (got nothing instead)

这对外行而言意味着您正在做这样的事情:

What this means in layman's terms is you're doing something like this:

class app(object):
    def get_pos(self):
        ...
...
app.get_pos()

您需要做的是这样的:

the_app = app()  # create instance of class 'app'
the_app.get_pos() # call get_pos on the instance

很难获得比这更具体的信息，因为您没有向我们展示导致错误的实际代码.

It's hard to get any more specific than this because you didn't show us the actual code that is causing the errors.

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