o La_@sddlmZdddZdS)) filterfalseNccsft}|j}|durt|j|D] }|||VqdS|D]}||}||vr0|||VqdS)zHList unique elements, preserving order. Remember all elements ever seen.N)setaddr __contains__)iterablekeyseenseen_addelementkr ?/usr/lib/python3/dist-packages/importlib_metadata/_itertools.pyunique_everseensr)N) itertoolsrrr r r r s