work around pypy3 bug
work around pypy3 bug

marscher/cython,hhsprings/cython,JelleZijlstra/cython,cython/cython,JelleZijlstra/cython,encukou/cython,andreasvc/cython,madjar/cython,dahebolangkuan/cython,mcanthony/cython,slonik-az/cython,mrGeen/cython,ChristopherHogan/cython,roxyboy/cython,fperez/cython,acrispin/cython,da-woods/cython,roxyboy/cython,hickford/cython,slonik-az/cython,fabianrost84/cython,marscher/cython,cython/cython,encukou/cython,fabianrost84/cython,hhsprings/cython,ChristopherHogan/cython,marscher/cython,scoder/cython,fperez/cython,andreasvc/cython,hickford/cython,madjar/cython,hickford/cython,scoder/cython,achernet/cython,hickford/cython,slonik-az/cython,madjar/cython,c-blake/cython,c-blake/cython,mcanthony/cython,acrispin/cython,hickford/cython,mcanthony/cython,ABcDexter/cython,c-blake/cython,slonik-az/cython,slonik-az/cython,mrGeen/cython,roxyboy/cython,fperez/cython,andreasvc/cython,JelleZijlstra/cython,fabianrost84/cython,madjar/cython,acrispin/cython,dahebolangkuan/cython,mrGeen/cython,c-blake/cython,acrispin/cython,ABcDexter/cython,hhsprings/cython,marscher/cython,ChristopherHogan/cython,cython/cython,da-woods/cython,da-woods/cython,fabianrost84/cython,encukou/cython,andreasvc/cython,scoder/cython,acrispin/cython,mcanthony/cython,hhsprings/cython,ABcDexter/cython,fperez/cython,ABcDexter/cython,encukou/cython,achernet/cython,cython/cython,achernet/cython,marscher/cython,da-woods/cython,madjar/cython,roxyboy/cython,hhsprings/cython,andreasvc/cython,dahebolangkuan/cython,encukou/cython,mrGeen/cython,c-blake/cython,fabianrost84/cython,dahebolangkuan/cython,achernet/cython,JelleZijlstra/cython,scoder/cython,mcanthony/cython,roxyboy/cython,fperez/cython,JelleZijlstra/cython,mrGeen/cython,dahebolangkuan/cython,ABcDexter/cython,achernet/cython