Fix Python C89 pedantry
Fix Python C89 pedantry

muxi/grpc,daniel-j-born/grpc,infinit/grpc,jcanizales/grpc,matt-kwong/grpc,andrewpollock/grpc,bjori/grpc,kpayson64/grpc,dgquintas/grpc,jtattermusch/grpc,kriswuollett/grpc,apolcyn/grpc,kriswuollett/grpc,deepaklukose/grpc,sreecha/grpc,wcevans/grpc,andrewpollock/grpc,ksophocleous/grpc,matt-kwong/grpc,miselin/grpc,grpc/grpc,msiedlarek/grpc,geffzhang/grpc,msiedlarek/grpc,mehrdada/grpc,thunderboltsid/grpc,grani/grpc,goldenbull/grpc,muxi/grpc,msiedlarek/grpc,doubi-workshop/grpc,larsonmpdx/grpc,makdharma/grpc,vsco/grpc,VcamX/grpc,hstefan/grpc,perumaalgoog/grpc,baylabs/grpc,a11r/grpc,fichter/grpc,ctiller/grpc,JoeWoo/grpc,royalharsh/grpc,yongni/grpc,MakMukhi/grpc,nicolasnoble/grpc,yongni/grpc,crast/grpc,carl-mastrangelo/grpc,deepaklukose/grpc,vsco/grpc,pszemus/grpc,pszemus/grpc,podsvirov/grpc,firebase/grpc,murgatroid99/grpc,daniel-j-born/grpc,kumaralokgithub/grpc,jtattermusch/grpc,kskalski/grpc,andrewpollock/grpc,geffzhang/grpc,kskalski/grpc,thunderboltsid/grpc,w4-sjcho/grpc,wcevans/grpc,malexzx/grpc,tamihiro/grpc,baylabs/grpc,matt-kwong/grpc,kriswuollett/grpc,jcanizales/grpc,simonkuang/grpc,crast/grpc,jcanizales/grpc,chrisdunelm/grpc,thunderboltsid/grpc,hstefan/grpc,greasypizza/grpc,crast/grpc,soltanmm-google/grpc,infinit/grpc,wangyikai/grpc,makdharma/grpc,doubi-workshop/grpc,grpc/grpc,fuchsia-mirror/third_party-grpc,yugui/grpc,kpayson64/grpc,larsonmpdx/grpc,Crevil/grpc,fuchsia-mirror/third_party-grpc,kriswuollett/grpc,kumaralokgithub/grpc,donnadionne/grpc,bjori/grpc,y-zeng/grpc,bjori/grpc,chrisdunelm/grpc,PeterFaiman/ruby-grpc-minimal,quizlet/grpc,matt-kwong/grpc,adelez/grpc,dgquintas/grpc,larsonmpdx/grpc,jtattermusch/grpc,kriswuollett/grpc,royalharsh/grpc,goldenbull/grpc,stanley-cheung/grpc,donnadionne/grpc,dklempner/grpc,hstefan/grpc,wcevans/grpc,grpc/grpc,VcamX/grpc,a11r/grpc,y-zeng/grpc,leifurhauks/grpc,vjpai/grpc,adelez/grpc,crast/grpc,Vizerai/grpc,tempbottle/grpc,doubi-workshop/grpc,andrewpollock/grpc,chrisdunelm/grpc,carl-mastrangelo/grpc,a-veitch/grpc,jcanizales/grpc,nicolasnoble/grpc,ejona86/grpc,firebase/grpc,msmania/grpc,meisterpeeps/grpc,kpayson64/grpc,thinkerou/grpc,a-veitch/grpc,thinkerou/grpc,msmania/grpc,carl-mastrangelo/grpc,jboeuf/grpc,kumaralokgithub/grpc,tengyifei/grpc,jboeuf/grpc,mehrdada/grpc,arkmaxim/grpc,apolcyn/grpc,baylabs/grpc,vjpai/grpc,donnadionne/grpc,deepaklukose/grpc,kumaralokgithub/grpc,LuminateWireless/grpc,tengyifei/grpc,ipylypiv/grpc,apolcyn/grpc,ppietrasa/grpc,ksophocleous/grpc,meisterpeeps/grpc,thinkerou/grpc,ksophocleous/grpc,perumaalgoog/grpc,Vizerai/grpc,vjpai/grpc,ppietrasa/grpc,grpc/grpc,kumaralokgithub/grpc,fichter/grpc,y-zeng/grpc,infinit/grpc,ipylypiv/grpc,grpc/grpc,MakMukhi/grpc,stanley-cheung/grpc,fichter/grpc,PeterFaiman/ruby-grpc-minimal,pszemus/grpc,ejona86/grpc,maxwell-demon/grpc,firebase/grpc,w4-sjcho/grpc,makdharma/grpc,surround-io/grpc,soltanmm-google/grpc,stanley-cheung/grpc,tamihiro/grpc,ksophocleous/grpc,grani/grpc,kriswuollett/grpc,stanley-cheung/grpc,rjshade/grpc,ctiller/grpc,a11r/grpc,ncteisen/grpc,royalharsh/grpc,ncteisen/grpc,muxi/grpc,ncteisen/grpc,apolcyn/grpc,malexzx/grpc,adelez/grpc,firebase/grpc,philcleveland/grpc,grani/grpc,makdharma/grpc,quizlet/grpc,grani/grpc,MakMukhi/grpc,matt-kwong/grpc,muxi/grpc,gpndata/grpc,bogdandrutu/grpc,ctiller/grpc,grani/grpc,baylabs/grpc,muxi/grpc,chrisdunelm/grpc,sreecha/grpc,philcleveland/grpc,makdharma/grpc,andrewpollock/grpc,LuminateWireless/grpc,soltanmm-google/grpc,wcevans/grpc,bogdandrutu/grpc,MakMukhi/grpc,madongfly/grpc,arkmaxim/grpc,leifurhauks/grpc,quizlet/grpc,vjpai/grpc,podsvirov/grpc,arkmaxim/grpc,w4-sjcho/grpc,Crevil/grpc,wangyikai/grpc,ejona86/grpc,gpndata/grpc,deepaklukose/grpc,dgquintas/grpc,Crevil/grpc,ejona86/grpc,PeterFaiman/ruby-grpc-minimal,philcleveland/grpc,msmania/grpc,bogdandrutu/grpc,kskalski/grpc,bjori/grpc,yinsu/grpc,jboeuf/grpc,mehrdada/grpc,ncteisen/grpc,malexzx/grpc,dklempner/grpc,thinkerou/grpc,greasypizza/grpc,apolcyn/grpc,daniel-j-born/grpc,goldenbull/grpc,doubi-workshop/grpc,ipylypiv/grpc,soltanmm-google/grpc,pmarks-net/grpc,Crevil/grpc,dgquintas/grpc,madongfly/grpc,gpndata/grpc,ppietrasa/grpc,fuchsia-mirror/third_party-grpc,kriswuollett/grpc,geffzhang/grpc,a11r/grpc,ctiller/grpc,yongni/grpc,tempbottle/grpc,ofrobots/grpc,yugui/grpc,yongni/grpc,muxi/grpc,doubi-workshop/grpc,philcleveland/grpc,a-veitch/grpc,greasypizza/grpc,arkmaxim/grpc,stanley-cheung/grpc,podsvirov/grpc,donnadionne/grpc,msiedlarek/grpc,JoeWoo/grpc,vsco/grpc,murgatroid99/grpc,murgatroid99/grpc,nicolasnoble/grpc,arkmaxim/grpc,perumaalgoog/grpc,w4-sjcho/grpc,tamihiro/grpc,fuchsia-mirror/third_party-grpc,ofrobots/grpc,y-zeng/grpc,ejona86/grpc,zhimingxie/grpc,hstefan/grpc,mehrdada/grpc,Vizerai/grpc,ctiller/grpc,greasypizza/grpc,grani/grpc,yongni/grpc,ksophocleous/grpc,rjshade/grpc,kpayson64/grpc,y-zeng/grpc,VcamX/grpc,LuminateWireless/grpc,msmania/grpc,maxwell-demon/grpc,dgquintas/grpc,greasypizza/grpc,PeterFaiman/ruby-grpc-minimal,meisterpeeps/grpc,tengyifei/grpc,kpayson64/grpc,ppietrasa/grpc,kriswuollett/grpc,wcevans/grpc,sreecha/grpc,vsco/grpc,jtattermusch/grpc,wangyikai/grpc,MakMukhi/grpc,dklempner/grpc,chrisdunelm/grpc,hstefan/grpc,andrewpollock/grpc,firebase/grpc,stanley-cheung/grpc,meisterpeeps/grpc,ctiller/grpc,madongfly/grpc,matt-kwong/grpc,thinkerou/grpc,geffzhang/grpc,tempbottle/grpc,w4-sjcho/grpc,malexzx/grpc,tamihiro/grpc,w4-sjcho/grpc,maxwell-demon/grpc,rjshade/grpc,a-veitch/grpc,kpayson64/grpc,geffzhang/grpc,soltanmm-google/grpc,ncteisen/grpc,fichter/grpc,firebase/grpc,jtattermusch/grpc,pszemus/grpc,meisterpeeps/grpc,mehrdada/grpc,doubi-workshop/grpc,hstefan/grpc,crast/grpc,wangyikai/grpc,pmarks-net/grpc,Crevil/grpc,msmania/grpc,zhimingxie/grpc,jboeuf/grpc,msiedlarek/grpc,bogdandrutu/grpc,LuminateWireless/grpc,madongfly/grpc,soltanmm/grpc,hstefan/grpc,fuchsia-mirror/third_party-grpc,7anner/grpc,surround-io/grpc,fuchsia-mirror/third_party-grpc,daniel-j-born/grpc,surround-io/grpc,VcamX/grpc,soltanmm/grpc,ipylypiv/grpc,donnadionne/grpc,thinkerou/grpc,doubi-workshop/grpc,PeterFaiman/ruby-grpc-minimal,chrisdunelm/grpc,soltanmm-google/grpc,deepaklukose/grpc,quizlet/grpc,cgvarela/grpc,miselin/grpc,LuminateWireless/grpc,perumaalgoog/grpc,thunderboltsid/grpc,JoeWoo/grpc,pmarks-net/grpc,a-veitch/grpc,ppietrasa/grpc,pszemus/grpc,mehrdada/grpc,leifurhauks/grpc,adelez/grpc,mehrdada/grpc,simonkuang/grpc,tengyifei/grpc,simonkuang/grpc,infinit/grpc,LuminateWireless/grpc,kpayson64/grpc,daniel-j-born/grpc,rjshade/grpc,larsonmpdx/grpc,ipylypiv/grpc,kumaralokgithub/grpc,pmarks-net/grpc,royalharsh/grpc,bjori/grpc,vsco/grpc,nicolasnoble/grpc,carl-mastrangelo/grpc,pmarks-net/grpc,ncteisen/grpc,deepaklukose/grpc,tamihiro/grpc,MakMukhi/grpc,bogdandrutu/grpc,miselin/grpc,ofrobots/grpc,ctiller/grpc,carl-mastrangelo/grpc,yugui/grpc,gpndata/grpc,ncteisen/grpc,yugui/grpc,soltanmm/grpc,yang-g/grpc,y-zeng/grpc,yinsu/grpc,muxi/grpc,murgatroid99/grpc,philcleveland/grpc,royalharsh/grpc,pszemus/grpc,greasypizza/grpc,firebase/grpc,dgquintas/grpc,Crevil/grpc,nicolasnoble/grpc,JoeWoo/grpc,pmarks-net/grpc,jboeuf/grpc,vsco/grpc,jboeuf/grpc,pmarks-net/grpc,firebase/grpc,malexzx/grpc,ctiller/grpc,ctiller/grpc,ncteisen/grpc,kpayson64/grpc,yang-g/grpc,arkmaxim/grpc,rjshade/grpc,tengyifei/grpc,ejona86/grpc,doubi-workshop/grpc,grani/grpc,vjpai/grpc,pszemus/grpc,makdharma/grpc,podsvirov/grpc,bogdandrutu/grpc,wcevans/grpc,grpc/grpc,VcamX/grpc,jcanizales/grpc,kskalski/grpc,sreecha/grpc,yang-g/grpc,apolcyn/grpc,fuchsia-mirror/third_party-grpc,wangyikai/grpc,grpc/grpc,ejona86/grpc,sreecha/grpc,thinkerou/grpc,firebase/grpc,bogdandrutu/grpc,kumaralokgithub/grpc,pmarks-net/grpc,Vizerai/grpc,crast/grpc,pszemus/grpc,kpayson64/grpc,infinit/grpc,thinkerou/grpc,chrisdunelm/grpc,adelez/grpc,soltanmm/grpc,kskalski/grpc,jcanizales/grpc,donnadionne/grpc,goldenbull/grpc,arkmaxim/grpc,vjpai/grpc,vjpai/grpc,VcamX/grpc,daniel-j-born/grpc,royalharsh/grpc,vjpai/grpc,msiedlarek/grpc,soltanmm/grpc,royalharsh/grpc,thunderboltsid/grpc,jtattermusch/grpc,pmarks-net/grpc,chrisdunelm/grpc,donnadionne/grpc,gpndata/grpc,Vizerai/grpc,kskalski/grpc,JoeWoo/grpc,zhimingxie/grpc,ipylypiv/grpc,VcamX/grpc,matt-kwong/grpc,yang-g/grpc,hstefan/grpc,a-veitch/grpc,tempbottle/grpc,ncteisen/grpc,rjshade/grpc,JoeWoo/grpc,kumaralokgithub/grpc,simonkuang/grpc,vsco/grpc,greasypizza/grpc,zhimingxie/grpc,nicolasnoble/grpc,cgvarela/grpc,ctiller/grpc,msmania/grpc,tengyifei/grpc,jboeuf/grpc,surround-io/grpc,tamihiro/grpc,ananthonline/grpc,zhimingxie/grpc,daniel-j-born/grpc,ejona86/grpc,chrisdunelm/grpc,quizlet/grpc,vjpai/grpc,larsonmpdx/grpc,baylabs/grpc,grpc/grpc,makdharma/grpc,wangyikai/grpc,kskalski/grpc,PeterFaiman/ruby-grpc-minimal,daniel-j-born/grpc,nicolasnoble/grpc,yongni/grpc,carl-mastrangelo/grpc,rjshade/grpc,7anner/grpc,msmania/grpc,cgvarela/grpc,mehrdada/grpc,gpndata/grpc,zhimingxie/grpc,ncteisen/grpc,podsvirov/grpc,royalharsh/grpc,ncteisen/grpc,perumaalgoog/grpc,apolcyn/grpc,stanley-cheung/grpc,grpc/grpc,7anner/grpc,miselin/grpc,jboeuf/grpc,y-zeng/grpc,perumaalgoog/grpc,firebase/grpc,w4-sjcho/grpc,y-zeng/grpc,dgquintas/grpc,infinit/grpc,yang-g/grpc,yinsu/grpc,podsvirov/grpc,ananthonline/grpc,quizlet/grpc,simonkuang/grpc,murgatroid99/grpc,7anner/grpc,kskalski/grpc,jtattermusch/grpc,grpc/grpc,ipylypiv/grpc,sreecha/grpc,mehrdada/grpc,leifurhauks/grpc,firebase/grpc,jcanizales/grpc,perumaalgoog/grpc,yinsu/grpc,donnadionne/grpc,greasypizza/grpc,tempbottle/grpc,pszemus/grpc,jboeuf/grpc,soltanmm-google/grpc,bogdandrutu/grpc,philcleveland/grpc,daniel-j-born/grpc,muxi/grpc,LuminateWireless/grpc,wcevans/grpc,ejona86/grpc,surround-io/grpc,stanley-cheung/grpc,wcevans/grpc,perumaalgoog/grpc,simonkuang/grpc,PeterFaiman/ruby-grpc-minimal,yang-g/grpc,a-veitch/grpc,thinkerou/grpc,miselin/grpc,tengyifei/grpc,tempbottle/grpc,a-veitch/grpc,Vizerai/grpc,miselin/grpc,madongfly/grpc,doubi-workshop/grpc,meisterpeeps/grpc,yongni/grpc,donnadionne/grpc,murgatroid99/grpc,w4-sjcho/grpc,wangyikai/grpc,cgvarela/grpc,yang-g/grpc,dklempner/grpc,philcleveland/grpc,larsonmpdx/grpc,matt-kwong/grpc,malexzx/grpc,MakMukhi/grpc,quizlet/grpc,philcleveland/grpc,maxwell-demon/grpc,ananthonline/grpc,firebase/grpc,tamihiro/grpc,miselin/grpc,goldenbull/grpc,thinkerou/grpc,larsonmpdx/grpc,ananthonline/grpc,goldenbull/grpc,yugui/grpc,Vizerai/grpc,donnadionne/grpc,muxi/grpc,malexzx/grpc,sreecha/grpc,carl-mastrangelo/grpc,vjpai/grpc,Crevil/grpc,yinsu/grpc,murgatroid99/grpc,soltanmm/grpc,infinit/grpc,msiedlarek/grpc,miselin/grpc,wangyikai/grpc,murgatroid99/grpc,dgquintas/grpc,ksophocleous/grpc,ananthonline/grpc,crast/grpc,simonkuang/grpc,bjori/grpc,ppietrasa/grpc,tamihiro/grpc,malexzx/grpc,fichter/grpc,kpayson64/grpc,soltanmm-google/grpc,apolcyn/grpc,wcevans/grpc,dgquintas/grpc,ctiller/grpc,bjori/grpc,Vizerai/grpc,thunderboltsid/grpc,dklempner/grpc,pszemus/grpc,zhimingxie/grpc,grani/grpc,hstefan/grpc,yongni/grpc,goldenbull/grpc,cgvarela/grpc,grpc/grpc,a11r/grpc,madongfly/grpc,msiedlarek/grpc,ctiller/grpc,adelez/grpc,Vizerai/grpc,LuminateWireless/grpc,stanley-cheung/grpc,7anner/grpc,carl-mastrangelo/grpc,stanley-cheung/grpc,leifurhauks/grpc,adelez/grpc,JoeWoo/grpc,w4-sjcho/grpc,dklempner/grpc,tamihiro/grpc,PeterFaiman/ruby-grpc-minimal,ofrobots/grpc,bogdandrutu/grpc,yinsu/grpc,surround-io/grpc,PeterFaiman/ruby-grpc-minimal,madongfly/grpc,jtattermusch/grpc,fichter/grpc,carl-mastrangelo/grpc,ofrobots/grpc,kriswuollett/grpc,nicolasnoble/grpc,a11r/grpc,thunderboltsid/grpc,Vizerai/grpc,murgatroid99/grpc,thinkerou/grpc,leifurhauks/grpc,nicolasnoble/grpc,fichter/grpc,ipylypiv/grpc,dklempner/grpc,larsonmpdx/grpc,PeterFaiman/ruby-grpc-minimal,bjori/grpc,tengyifei/grpc,Vizerai/grpc,surround-io/grpc,zhimingxie/grpc,mehrdada/grpc,mehrdada/grpc,andrewpollock/grpc,podsvirov/grpc,meisterpeeps/grpc,jboeuf/grpc,goldenbull/grpc,a11r/grpc,nicolasnoble/grpc,mehrdada/grpc,andrewpollock/grpc,fichter/grpc,yongni/grpc,pszemus/grpc,yugui/grpc,geffzhang/grpc,maxwell-demon/grpc,ppietrasa/grpc,matt-kwong/grpc,7anner/grpc,dklempner/grpc,ipylypiv/grpc,goldenbull/grpc,thunderboltsid/grpc,maxwell-demon/grpc,dklempner/grpc,makdharma/grpc,ksophocleous/grpc,geffzhang/grpc,meisterpeeps/grpc,arkmaxim/grpc,VcamX/grpc,malexzx/grpc,zhimingxie/grpc,MakMukhi/grpc,maxwell-demon/grpc,baylabs/grpc,dgquintas/grpc,perumaalgoog/grpc,rjshade/grpc,royalharsh/grpc,nicolasnoble/grpc,msiedlarek/grpc,ppietrasa/grpc,cgvarela/grpc,philcleveland/grpc,ofrobots/grpc,ofrobots/grpc,ananthonline/grpc,vjpai/grpc,jcanizales/grpc,adelez/grpc,kumaralokgithub/grpc,baylabs/grpc,jboeuf/grpc,gpndata/grpc,simonkuang/grpc,maxwell-demon/grpc,thunderboltsid/grpc,adelez/grpc,a-veitch/grpc,jtattermusch/grpc,jtattermusch/grpc,thinkerou/grpc,infinit/grpc,JoeWoo/grpc,kpayson64/grpc,y-zeng/grpc,donnadionne/grpc,carl-mastrangelo/grpc,larsonmpdx/grpc,chrisdunelm/grpc,vsco/grpc,gpndata/grpc,jtattermusch/grpc,msmania/grpc,chrisdunelm/grpc,MakMukhi/grpc,deepaklukose/grpc,tempbottle/grpc,muxi/grpc,VcamX/grpc,7anner/grpc,carl-mastrangelo/grpc,LuminateWireless/grpc,ksophocleous/grpc,sreecha/grpc,madongfly/grpc,yang-g/grpc,geffzhang/grpc,cgvarela/grpc,muxi/grpc,baylabs/grpc,bjori/grpc,leifurhauks/grpc,crast/grpc,rjshade/grpc,pszemus/grpc,andrewpollock/grpc,arkmaxim/grpc,7anner/grpc,madongfly/grpc,Crevil/grpc,ncteisen/grpc,sreecha/grpc,ananthonline/grpc,yang-g/grpc,quizlet/grpc,infinit/grpc,muxi/grpc,dgquintas/grpc,miselin/grpc,yugui/grpc,ejona86/grpc,grpc/grpc,simonkuang/grpc,grani/grpc,apolcyn/grpc,wangyikai/grpc,tengyifei/grpc,tempbottle/grpc,ejona86/grpc,7anner/grpc,murgatroid99/grpc,yugui/grpc,jboeuf/grpc,ananthonline/grpc,carl-mastrangelo/grpc,donnadionne/grpc,yinsu/grpc,maxwell-demon/grpc,jcanizales/grpc,ejona86/grpc,nicolasnoble/grpc,jtattermusch/grpc,vjpai/grpc,a11r/grpc,podsvirov/grpc,msmania/grpc,surround-io/grpc,soltanmm/grpc,yinsu/grpc,baylabs/grpc,fuchsia-mirror/third_party-grpc,soltanmm/grpc,vsco/grpc,a11r/grpc,sreecha/grpc,quizlet/grpc,leifurhauks/grpc,ofrobots/grpc,JoeWoo/grpc,cgvarela/grpc,fuchsia-mirror/third_party-grpc,fuchsia-mirror/third_party-grpc,sreecha/grpc,stanley-cheung/grpc,kskalski/grpc,geffzhang/grpc,greasypizza/grpc,deepaklukose/grpc,makdharma/grpc,ananthonline/grpc,Crevil/grpc,deepaklukose/grpc,yugui/grpc,sreecha/grpc,soltanmm-google/grpc,ppietrasa/grpc,ofrobots/grpc,yinsu/grpc,soltanmm/grpc,podsvirov/grpc,stanley-cheung/grpc,leifurhauks/grpc