Guys:

I create a web controller:

from openerp import http 
import simplejson 
from openerp.http import Response

class WebClient(http.Controller):

    @http.route('/web/webclient/ejemplo', type='json',auth='public', methods=['POST'], website=True)
    @serialize_exception
    def index(self, **args):        
        print 'CONNECTION SUCCESSFUL ***'
        print 'args *** ' , args
        
        name = args.get('name', False)
        email = args.get('email', False)
        
        if not name:
            Response.status = '400 Bad Request'
        #return '{"response": "OK"}'
        return request.make_response(simplejson.dumps({"response": "OK"}),
                [('Content-Type', 'application/json'),
                 ])

And call this method whit this python script:

import json
import requests
url = 'http://localhost:8069/web/webclient/ejemplo'
headers = {'Content-Type': 'application/json'}
data = {
'jsonrpc':'2.0',
'method':'call',
'params':{'context':{},
           'name':'hola',
          'email':'emailing'},
          }
}
data_json = json.dumps(data)
r = requests.post(url=url, data=data_json, headers=headers)
c = r.text
print c

print show this:

{"jsonrpc": "2.0", "id": null, 
 "error": {"message": "Odoo Server Error", "code": 200, 
           "data": {"debug": "Traceback (most recent call last):\n  
                     File \"/home/opencons/herramientas/odoo-8.0/openerp/http.py\", line 537, in _handle_exception\n    return super(JsonRequest, self)._handle_exception(exception)\n  File \"/home/opencons/herramientas/odoo-8.0/openerp/http.py\", line 1422, in _dispatch_nodb\n    func, arguments = self.nodb_routing_map.bind_to_environ(request.httprequest.environ).match()\n  File \"/usr/lib/python2.7/dist-packages/werkzeug/routing.py\", line 1433, in match\n    raise NotFound()\nNotFound: 404: Not Found\n", 
           "message": "", "name": "werkzeug.exceptions.NotFound", "arguments": []}}}

and the console

2017-04-19 22:16:33,563 4880 INFO ? openerp.http: HTTP Configuring static files 2017-04-19 22:16:33,568 4880 INFO None openerp.http: Generating nondb routing openerp.conf.server_wide_modules ['web', 'web_kanban']
2017-04-19 22:16:33,575 4880 ERROR None openerp.http: Exception during JSON request handling.
Traceback (most recent call last):
  File "/home/opencons/herramientas/odoo-8.0/openerp/http.py", line 537, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/opencons/herramientas/odoo-8.0/openerp/http.py", line 1422, in _dispatch_nodb
    func, arguments = self.nodb_routing_map.bind_to_environ(request.httprequest.environ).match()
  File "/usr/lib/python2.7/dist-packages/werkzeug/routing.py", line 1433, in match
    raise NotFound()
NotFound: 404: Not Found 2017-04-19 22:16:33,576 4880 INFO None werkzeug: 127.0.0.1 - - [19/Apr/2017 22:16:33] "POST /web/webclient/ejemplo HTTP/1.1" 200 -

this code is in odoo v8.

Is posible call web controllers from python script?

and Why does odoov8 show the error NotFounf: 404?