string representation for a symlink option

tiramisu/config.py

@@ -176,7 +176,8 @@ class Config(object):
         opt_or_descr = getattr(self._cfgimpl_descr, name)
         # symlink options
         if type(opt_or_descr) == SymLinkOption:
-            return getattr(self, opt_or_descr.path)
+            rootconfig = self._cfgimpl_get_toplevel()
+            return getattr(rootconfig, opt_or_descr.path)
         if name not in self._cfgimpl_values:
             raise AttributeError("%s object has no attribute %s" %
                                  (self.__class__, name))
@@ -384,7 +385,7 @@ class Config(object):
         """Pythonesque way of parsing group's ordered options.
         iteration only on Options (not OptionDescriptions)"""
         for child in self._cfgimpl_descr._children:
-            if isinstance(child, Option):
+            if not isinstance(child, OptionDescription):
                 try:
                     yield child._name, getattr(self, child._name)
                 except:

tiramisu/option.py

@@ -326,6 +326,11 @@ class ChoiceOption(Option):
                  requires=None, mandatory=False, multi=False, callback=None,
                  callback_params=None, open_values=False, validator=None,
                  validator_args={}):
+        """
+        :default: default non multi option's value
+        :default_multi: default value in case of a multi
+        :param open_values: allowed values for the option's value
+        """
         self.values = values
         if open_values not in [True, False]:
             raise ConfigError('Open_values must be a boolean for '