Hi. The only way I could deal with this issue was to keep track of
every class derived from the BaseClass, in order to _not_ using it
again to instantiate an object. I changed this:
> exec("import sys\n", namespace_module_main,
> namespace_module_main);
to:
> exec("import sys\n classes = []\n", namespace_module_main,
> namespace_module_main);
and:
> object ignored_ =
> exec("l = dir()\n" //get everything defined in current dictionary
> "class_ = None\n"
> "for i in l:\n"
> " res = eval(i)\n"
> " if type(res) == type(BaseClass): class_ = res\n"
> //if we've got a class derived from BaseClass, we save it to "class_"
> "if class_ is None: raise Error()\n"
> , this->namespace_modulo_local, this->namespace_modulo_local);
to:
> object ignored_ =
> exec("l = dir()\n" //get everything defined in current dictionary
> "class_ = None\n"
> "for i in l:\n"
> " res = eval(i)\n"
> " if type(res) == type(BaseClass) and res not in classes:\n
> " class_ = res\n"
> " classes.append( res); break\n"
> //if we've got a class derived from BaseClass, we save it to "class_"
> "if class_ is None: raise Error()\n"
> , this->namespace_modulo_local, this->namespace_modulo_local);
And it works quite well for my purposes, but I would like to know if
there's a more elegant way to extract a class which I know its base
class, but not its name.
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