o Zh@svddlmZddlmZddlmZmZmZmZm Z  e e efZ dede ee ffddZded e defd d Zd S) )STATE_DICT_TYPE)_version)OBJ_PATH set_elementSTATE_DICT_ITEMtraverse_state_dicttraverse_state_dict_v_2_3 state_dictreturncs`iidtdtddffdd }tjduotjdk}|r't||fSt||fS)a Flatten ``state_dict`` made of nested dicts and lists into a top level dictionary. Use ``unflatten_state_dict`` to revert this process. Returns: A tuple with the flatten state_dict and a mapping from original to new state_dict. N.B. The new keys are derived from the object paths, joined by dot. For example: ``{ 'a': {'b':...}}`` results in the key `a.b`. pathvaluer Ncs:dtt|}|vrtd|||<||<dS)N.zduplicated flatten key )joinmapstr ValueError)r r Znew_fqnZ flattenedZmappingsX/var/www/auris/lib/python3.10/site-packages/torch/distributed/checkpoint/_nested_dict.py flat_copy*s  z%flatten_state_dict..flat_copyZ2_3)rrrZ_derived_versionr r)r rZ use_v_2_3rrrflatten_state_dicts    rmappingcCs*i}|D] \}}t||||q|S)zaRestore the original nested state_dict according to ``mapping`` and the flattened ``state_dict``.)itemsr)r rnestedkeyr rrrunflatten_state_dict>srN)Z%torch.distributed.checkpoint.metadatarr _traverserrrrr dictrZFLATTEN_MAPPINGtuplerrrrrrs"     #