capybara/virtualenv/lib/python2.7/site-packages/jinja2/environment.py
def getitem(self, obj, argument):
        """Get an item or attribute of an object but prefer the item."""
        try:
            return obj[argument]
        except (TypeError, LookupError):
            if isinstance(argument, string_types):
                try:
                    attr = str(argument)
                except Exception:
                    pass
                else:
                    try:
                        return getattr(obj, attr)
                    except AttributeError:
                        pass
            return self.undefined(obj=obj, name=argument)
def getitem(self, obj, argument):
        """Get an item or attribute of an object but prefer the item."""
        try:
            return obj[argument]
        except (TypeError, LookupError):
            if isinstance(argument, string_types):
                try:
                    attr = str(argument)
                except Exception:
                    pass
                else:
                    try:
                        return getattr(obj, attr)
                    except AttributeError:
                        pass
            return self.undefined(obj=obj, name=argument)
Get an item or attribute of an object but prefer the item.