I'm doing something like this to generate some models dynamically:
SIMILAR_MODELS_TEMPLATE=
> """
> @some_decorator
> class %(PREFIX)sModel (Some_Abs_model):
> \"""%(DESCRIPTION)s
> \"""
> pass
> """
then I have a factory:
> def similar_models_factory(prefix,description):
> format_dict = {
> 'PREFIX' : prefix,
> 'DESCRIPTION' : description,
> }
> cls_name = "%sModel" % prefix
> cls_source = SIMILAR_MODELS_TEMPLATE % format_dict
>
> exec(cls_source)
> new_cls = locals().get(cls_name)
> return new_cls
And finally I have in the models.py:
> from my_factories import similar_models_factory
>
SIMILAR_MODELS_LIST =(
> {'prefix': 'Foo', 'desc' : 'Foo model and etc..',},
> {'prefix': 'Bars', 'desc' : 'Bars model and etc..',},
> .....
> )
>
for smodel in SIMILAR_MODELS_LIST:
> cls = similar_models_factory(smodels['prefix'], smodels['desc'])
> vars()[cls.__name__] = cls
And this gives my just what I want, but I read somewhere that if you do:
> exec ""
It would be too costly, and I would like to know if this would have some
heavy load in my project(and if please, how can I calculate this, to
compare?)
Thanks!
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