尝试子类化但获取object .__ init __()不带参数 [英] Trying to subclass but getting object.__init__() takes no parameters

问题描述

我试图从webpy框架中继承web.form.Form来改变行为(它从表中呈现).我尝试过这种方式:

I'm trying to subclass web.form.Form from the webpy framework to change the behavior (it renders from in a table). I tried doing it in this way:

class SyssecForm(web.form.Form):

            def __init__(self, *inputs, **kw): 
                super(SyssecForm, self).__init__(*inputs, **kw)

            def render(self):
                out='<div id="form"> '
                for i in self.inputs:
                    html = utils.safeunicode(i.pre) + i.render() + self.rendernote(i.note) + utils.safeunicode(i.post)
                    out +=  "%s"%(html)  
                    out +=  '"<div id="%s"> %s %s</div>'% (i.id, net.websafe(i.description), html)
                out+= "</div>"
                return out

现在我收到此错误object.__init__() takes no parameters:

推荐答案

这对我有用(web.py 0.37):

This works for me (web.py 0.37):

import web

class SyssecForm(web.form.Form):

    def __init__(self, *inputs, **kw): 
        super(SyssecForm, self).__init__(*inputs, **kw)

    def render(self):
        out='<div id="form"> '
        for i in self.inputs:
            html = web.utils.safeunicode(i.pre) + i.render() + self.rendernote(i.note) + web.utils.safeunicode(i.post)
            out +=  "%s"%(html)  
            out +=  '"<div id="%s"> %s %s</div>'% (i.id, web.net.websafe(i.description), html)
        out+= "</div>"
        return out

form = SyssecForm(web.form.Textbox("test"))
print form.render()

您的问题是因为您可能已经过时了web.py，因为web.form.Form从object继承了: https://github.com/webpy/webpy/commit/766709cbcae1369126a52aee4bc3bf145b5d77a8

Your problem is because you might have outdated web.py, since web.form.Form inherits from object now: https://github.com/webpy/webpy/commit/766709cbcae1369126a52aee4bc3bf145b5d77a8

Super仅适用于新型类.您必须在类delcaration中添加object，例如:class SyssecForm(web.form.Form, object):，或者必须更新web.py.

Super only works for new-style classes. You have to add object in class delcaration like this: class SyssecForm(web.form.Form, object): or you have to update web.py.

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