Fixes to make tests work with Python 3
Fixes to make tests work with Python 3

BeifeiZhou/annoy,BeifeiZhou/annoy,pombredanne/annoy,codeaudit/annoy,LongbinChen/annoy,LongbinChen/annoy2,subu-cliqz/annoy,eddelbuettel/annoy,LongbinChen/annoy2,eddelbuettel/annoy,LongbinChen/annoy,LongbinChen/annoy2,subu-cliqz/annoy,tjrileywisc/annoy,pombredanne/annoy,eddelbuettel/annoy,Houzz/annoy2,tjrileywisc/annoy,codeaudit/annoy,eddelbuettel/annoy,guitarmind/annoy,subu-cliqz/annoy,spotify/annoy,Houzz/annoy2,LongbinChen/annoy,pombredanne/annoy,codeaudit/annoy,spotify/annoy,guitarmind/annoy,tjrileywisc/annoy,spotify/annoy,BeifeiZhou/annoy,subu-cliqz/annoy,Houzz/annoy2,guitarmind/annoy,spotify/annoy,pombredanne/annoy,tjrileywisc/annoy