<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _find_content(self, cont_name):
 """Search for a content_name in the content data, if not found the parent is searched."""

        try:
            a = self.content_data[cont_name]
            return a
        except KeyError:
            if self.parent:
                return self.parent._find_content(cont_name)
            else:
                # Fallback for no content (Raise NoContent?)
                return ""