HelloWorld sanity check please - AttributeError: 'tuple' object has no attribute 'startswith'

[odar...@gmail.com]

I have a VERY simple application that refuses to start.
This is the error trace:

pi@raspberrypi:~/Projects/HelloWorld $ python3.5m  main.py

[24/Apr/2019:16:50:28] ENGINE Listening for SIGUSR1.

[24/Apr/2019:16:50:28] ENGINE Listening for SIGHUP.

[24/Apr/2019:16:50:28] ENGINE Listening for SIGTERM.

[24/Apr/2019:16:50:28] ENGINE Bus STARTING

[24/Apr/2019:16:50:28] ENGINE Error in 'start' listener <cherrypy._cpchecker.Checker object at 0x76049470>

Traceback (most recent call last):

  File "/usr/local/lib/python3.5/dist-packages/cherrypy/process/wspbus.py", line 230, in publish

    output.append(listener(*args, **kwargs))

  File "/usr/local/lib/python3.5/dist-packages/cherrypy/_cpchecker.py", line 40, in __call__

    method()

  File "/usr/local/lib/python3.5/dist-packages/cherrypy/_cpchecker.py", line 144, in check_static_paths

    if os.path.isabs(dir):

  File "/usr/lib/python3.5/posixpath.py", line 64, in isabs

    return s.startswith(sep)

AttributeError: 'tuple' object has no attribute 'startswith'

[24/Apr/2019:16:50:28] ENGINE Started monitor thread 'Autoreloader'.

[24/Apr/2019:16:50:28] ENGINE Serving on http://0.0.0.0:8080

[24/Apr/2019:16:50:28] ENGINE Shutting down due to error in start listener:

main.py:

import os, os.path

import cherrypy

class HelloWorld(object):

        @cherrypy.expose

        def index(self):

                return "Hello World !"

        @cherrypy.expose

        def greet(self, name='Unknown'):

                return "Hello " + name + " !"

if __name__ == '__main__':

        cherrypy.quickstart(HelloWorld(), '/', 'main.conf')

main.conf:

[global]

server.socket_host = '0.0.0.0'

server.socket_port = 8080

log.access_file = ''

log.error_file = ''

[/]

tools.trailing_slash.on = False

tools.staticdir.root = os.path.abspath(os.getcwd())

[/html]

tools.staticdir.on = True

tools.staticdir.dir = './html',

tools.staticdir.index = 'index.html'

[/css]

tools.staticdir.on = True

tools.staticdir.dir = './css'

If I leave only the [global] section in the conf file then the application starts.

So it seems something is wrong with the [/] and onwards part.

But what ? Any ideas ?

[Tim Roberts]

On Apr 24, 2019, at 8:11 AM, odar...@gmail.com wrote:

I have a VERY simple application that refuses to start.

This is the error trace:...
...

main.conf:

...

[/html]

tools.staticdir.on = True

tools.staticdir.dir = './html',

tools.staticdir.index = 'index.html'

You really can't see it?  That the second line in the [/html] section has a trailing comma?  In Python, that turns it from a string constant to a one-item tuple.

— 

Tim Roberts, ti...@probo.com
Providenza & Boekelheide, Inc.

[odar...@gmail.com]

Yeah, it took almost 4 hours for me to eventually spot the extra comma.
Sometimes all you need is an extra pair of (more objective) eyes !

Thanks for the reply.