That's kind of interesting.
If you can be more specific about the error when pickling, we might
be able to find a solution to make it pickleable.
This is an example using the tg-admin shell
>>> from turbogears import widgets
>>> tf=widgets.TextField(name="algo",label=u"Algo")
>>> tbl_fr=widgets.TableForm(submit_text=u"Hola",fields=[tf])
>>> f_bd=Formulario(nombre=u"Pollo",formulario=tbl_fr)
>>> session.save(f_bd)
>>> session.flush()
Traceback (most recent call last):
File "<console>", line 1, in ?
File "build/bdist.linux-i686/egg/sqlalchemy/orm/session.py", line 234, in flush
File "build/bdist.linux-i686/egg/sqlalchemy/orm/unitofwork.py", line 197, in flush
File "build/bdist.linux-i686/egg/sqlalchemy/orm/unitofwork.py", line 367, in execute
File "build/bdist.linux-i686/egg/sqlalchemy/orm/unitofwork.py", line 635, in execute
File "build/bdist.linux-i686/egg/sqlalchemy/orm/unitofwork.py", line 589, in _save_objects
File "build/bdist.linux-i686/egg/sqlalchemy/orm/mapper.py", line 833, in save_obj
File "build/bdist.linux-i686/egg/sqlalchemy/engine/base.py", line 244, in execute
File "build/bdist.linux-i686/egg/sqlalchemy/engine/base.py", line 268, in execute_clauseelement
File "build/bdist.linux-i686/egg/sqlalchemy/engine/base.py", line 283, in execute_compiled
File "build/bdist.linux-i686/egg/sqlalchemy/engine/default.py", line 146, in pre_exec
File "build/bdist.linux-i686/egg/sqlalchemy/engine/default.py", line 186, in _process_defaults
File "build/bdist.linux-i686/egg/sqlalchemy/sql.py", line 291, in __getitem__
File "build/bdist.linux-i686/egg/sqlalchemy/sql.py", line 776, in typeprocess
File "build/bdist.linux-i686/egg/sqlalchemy/types.py", line 221, in convert_bind_param
UnpickleableError: Cannot pickle <type 'thread.lock'> objects
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