Today after update then upgrade got this:

Stopping openerp-server: start-stop-daemon: warning: failed to kill 2473: No such process
openerp-server.
Desempaquetando el reemplazo de openerp ...
Procesando disparadores para python-support ...
Compiling /usr/lib/pymodules/python2.6/openerp/addons/event/event.py ...
SyntaxError: ('invalid syntax', ('/usr/lib/pymodules/python2.6/openerp/addons/event/event.py', 117, 38, '            res[event_id] = {key:0 for key in keys.values()}\n'))

Compiling /usr/lib/pymodules/python2.6/openerp/osv/orm.py ...
SyntaxError: ('invalid syntax', ('/usr/lib/pymodules/python2.6/openerp/osv/orm.py', 2404, 45, "        groupby_dict = {gb['groupby']: gb for gb in annotated_groupbys}\n"))

Configurando openerp (8.0dev-20140821-230101-1) ...
Compiling /usr/lib/pymodules/python2.6/openerp/addons/event/event.py ...
SyntaxError: ('invalid syntax', ('/usr/lib/pymodules/python2.6/openerp/addons/event/event.py', 117, 38, '            res[event_id] = {key:0 for key in keys.values()}\n'))

Compiling /usr/lib/pymodules/python2.6/openerp/osv/orm.py ...
SyntaxError: ('invalid syntax', ('/usr/lib/pymodules/python2.6/openerp/osv/orm.py', 2404, 45, "        groupby_dict = {gb['groupby']: gb for gb in annotated_groupbys}\n"))

Starting openerp-server: openerp-server.
Procesando disparadores para python-support ...
Compiling /usr/lib/pymodules/python2.6/openerp/addons/event/event.py ...
SyntaxError: ('invalid syntax', ('/usr/lib/pymodules/python2.6/openerp/addons/event/event.py', 117, 38, '            res[event_id] = {key:0 for key in keys.values()}\n'))

Compiling /usr/lib/pymodules/python2.6/openerp/osv/orm.py ...
SyntaxError: ('invalid syntax', ('/usr/lib/pymodules/python2.6/openerp/osv/orm.py', 2404, 45, "        groupby_dict = {gb['groupby']: gb for gb in annotated_groupbys}\n"))

And then I tryed:
 

root@Ingenieria:~# openerp-server
Traceback (most recent call last):
  File "/usr/bin/openerp-server", line 2, in <module>
    import openerp
  File "/usr/lib/pymodules/python2.6/openerp/__init__.py", line 70, in <module>
    import cli
  File "/usr/lib/pymodules/python2.6/openerp/cli/__init__.py", line 6, in <module>
    from openerp.modules import module
  File "/usr/lib/pymodules/python2.6/openerp/modules/__init__.py", line 27, in <module>
    from . import db, graph, loading, migration, module, registry
  File "/usr/lib/pymodules/python2.6/openerp/modules/graph.py", line 32, in <module>
    import openerp.osv as osv
  File "/usr/lib/pymodules/python2.6/openerp/osv/__init__.py", line 22, in <module>
    import osv
  File "/usr/lib/pymodules/python2.6/openerp/osv/osv.py", line 22, in <module>
    from openerp.osv.orm import except_orm, Model, TransientModel, AbstractModel
  File "/usr/lib/pymodules/python2.6/openerp/osv/orm.py", line 2404
    groupby_dict = {gb['groupby']: gb for gb in annotated_groupbys}
                                        ^
SyntaxError: invalid syntax

What can I do?