removed non-ascii char and imported re package.
removed non-ascii char and imported re package.

parkhyeonghwa/mtools,aerrami/mtools,yaowenqiang/mtools,tomzhang/mtools,ces0712/mtools,corymintz/mtools,gormanb/mtools,gormanb/mtools,devkev/mtools,gormanb/mtools,corymintz/mtools,corymintz/mtools,ces0712/mtools,rueckstiess/mtools,aerrami/mtools,tomzhang/mtools,devkev/mtools,yaowenqiang/mtools,yaowenqiang/mtools,rueckstiess/mtools,tomzhang/mtools,parkhyeonghwa/mtools,devkev/mtools,aerrami/mtools,ces0712/mtools,parkhyeonghwa/mtools