GET() takes 1 positional argument but 2 were given

Question

I am new to web.py and I tried making a simple application where I retrieve a HTML file and display it.

Here is my complete code:

import web

render = web.template.render('templates/')

urls = (
    '/(.*)', 'index'
)

class index:
    def GET(self):
        return render.index()

if __name__ == "__main__":
    app = web.application(urls, globals())
    app.run()

When I run this, I get the error message:

<class 'TypeError'> at /

GET() takes 1 positional argument but 2 were given

Whenever I add a random parameter to the GET function, the page is able to function, but otherwise not. It would be great if someone could point out what is going wrong here.

Thanks in advance.

I dont't know what is web.py, but probably wsgi server passes request object as second argument into handler — NobbyNobbs, Nov 17 '18 at 04:13
According to the web.py docs, it is meant for python 2 and I downloaded the experimental version for python 3, could that possibly be a reason? — mathmaniac88, Nov 17 '18 at 04:19
Ok, i got it. /(.*) means you want to capture one path parameter and pass it into handler. — NobbyNobbs, Nov 17 '18 at 04:35

score 1 · Accepted Answer · answered Nov 17 '18 at 05:42

(.*) will be used as second argument, change your code

class index:
    def GET(self, name):
        return render.index(name)

and template index.html

$def with (name)
<html>
<head>
    <title>Hello $name</title>
</head>
<body>
Hello $name
</body>
</html>

now try open http://127.0.0.1:8080/John

GET() takes 1 positional argument but 2 were given

1 Answers1