repair python2 use has_key() & file_path & download progress#6

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tudou2015 wants to merge 2 commits intoAItransCompetition:masterfrom

tudou2015:master

Commits on Dec 26, 2018

repair python2 has no command: id in output
tudou2015
committed

Commits on Dec 27, 2018

repair file_path and download progress
tudou2015
committed