def in_namespace(target, ns_types, sync=True, *args):
if any([ns_type not in NAMESPACES.keys() for ns_type in ns_types]):
raise ValueError('ns_type must be one of {0}'.format(
', '.join(NAMESPACES)
))
cl = Clone(target, args, sum(map(lambda x: NAMESPACES[x].flag, ns_types)))
if sync:
cl.wait()
return cl
