finally a getvalue without a getattr

test/test_config_api.py

@@ -58,6 +58,13 @@ def test_iter_subconfig():
         zip(conf.gc, [("name", "ref"), ("dummy", False)]):
         assert name == gname
         assert value == gvalue
+
+def test_cfgimpl_get_value():
+    "same as getattr."
+    descr = make_description()
+    conf = Config(descr)
+    assert conf.cfgimpl_get_value(('gc', 'dummy')) == False
+
 #____________________________________________________________
 def test_getpaths():
     descr = make_description()

tiramisu/config.py

@@ -79,6 +79,25 @@ class Config(object):
             raise ConfigError("setting not allowed")
         self._cfgimpl_context._cfgimpl_settings = settings
 
+    def cfgimpl_get_description(self):
+        return self._cfgimpl_descr
+
+    def cfgimpl_get_value(self, path):
+        """same as multiple getattrs
+
+        :param path: list or tuple of path
+
+        example : ``path = (sub_conf, opt)``  makes a getattr of sub_conf, then
+        a getattr of opt, and then returns the opt's value.
+
+        :returns: subconf or option's value
+        """
+        subpaths = list(path)
+        subconf_or_opt = self
+        for subpath in subpaths:
+            subconf_or_opt = getattr(subconf_or_opt, subpath)
+        return subconf_or_opt
+
     def _validate_duplicates(self, children):
         """duplicates Option names in the schema
         :type children: list of `Option` or `OptionDescription`