Find a plugin named name

def find_plugin(self, name):
        """Find a plugin named name"""
        suffix = ".py"
        if not self.class_name:
            suffix = ""
        for i in self._get_paths():
            path = os.path.join(i, "%s%s" % (name, suffix))
            if os.path.exists(path):
                return path
        return None