Basic web.py backend for @themaninblue's DrawPad

app.py

import web
import json

urls = (
    '/', 'index',
    '/post', 'post',
    '/data', 'data',
)

def add_global_hook():
    g = web.storage({"paths": []})
    def _wrapper(handler):
        web.ctx.globals = g
        return handler()
    return _wrapper

app = web.application(urls, globals())
app.add_processor(add_global_hook())

class index:
    def GET(self):
        raise web.redirect('/static/index.htm')
    
class post:
    def POST(self):
        input = json.loads(web.data())
        web.ctx.globals.paths.append(input) 
        print len(web.ctx.globals.paths)
        return "ok"

class data:
    def GET(self):
        web.header('Content-Type', 'application/json')
        result = json.dumps(web.ctx.globals.paths)
        web.ctx.globals.paths = []
        return result

web.webapi.internalerror = web.debugerror
if __name__ == "__main__":
    app.run()