def make_selector(self, key, value):
        """ Helper to support the name -> !value notation
        """
        if isinstance(value, str) and value.startswith("!"):
            op = "!="
            value = value[1:]
        else:
            op = "="
        return "{key}{op}{value}".format(key=key, op=op, value=value)
 Helper to support the name -> !value notation
        
powerfulseal/k8s/k8s_client.py