py/parse: When looking up consts, check they exist before checking type.
py/parse: When looking up consts, check they exist before checking type.

pozetroninc/micropython,MrSurly/micropython-esp32,TDAbboud/micropython,chrisdearman/micropython,ryannathans/micropython,SHA2017-badge/micropython-esp32,adafruit/circuitpython,AriZuu/micropython,turbinenreiter/micropython,mhoffma/micropython,dxxb/micropython,dinau/micropython,emfcamp/micropython,pfalcon/micropython,jmarcelino/pycom-micropython,deshipu/micropython,lowRISC/micropython,micropython/micropython-esp32,micropython/micropython-esp32,mhoffma/micropython,ryannathans/micropython,hiway/micropython,mpalomer/micropython,HenrikSolver/micropython,pfalcon/micropython,adafruit/micropython,ganshun666/micropython,pfalcon/micropython,cwyark/micropython,matthewelse/micropython,mpalomer/micropython,micropython/micropython-esp32,dxxb/micropython,SHA2017-badge/micropython-esp32,praemdonck/micropython,tobbad/micropython,PappaPeppar/micropython,dmazzella/micropython,micropython/micropython-esp32,puuu/micropython,SHA2017-badge/micropython-esp32,hiway/micropython,dinau/micropython,pramasoul/micropython,ryannathans/micropython,lowRISC/micropython,deshipu/micropython,infinnovation/micropython,alex-robbins/micropython,jmarcelino/pycom-micropython,blazewicz/micropython,bvernoux/micropython,swegener/micropython,alex-march/micropython,matthewelse/micropython,selste/micropython,MrSurly/micropython,alex-robbins/micropython,alex-robbins/micropython,selste/micropython,adafruit/circuitpython,redbear/micropython,toolmacher/micropython,toolmacher/micropython,SHA2017-badge/micropython-esp32,oopy/micropython,drrk/micropython,MrSurly/micropython,tuc-osg/micropython,cwyark/micropython,turbinenreiter/micropython,kerneltask/micropython,AriZuu/micropython,dmazzella/micropython,Peetz0r/micropython-esp32,dmazzella/micropython,blazewicz/micropython,adafruit/micropython,pfalcon/micropython,ganshun666/micropython,MrSurly/micropython,tralamazza/micropython,pfalcon/micropython,pozetroninc/micropython,toolmacher/micropython,AriZuu/micropython,ganshun666/micropython,drrk/micropython,misterdanb/micropython,TDAbboud/micropython,praemdonck/micropython,adafruit/circuitpython,hosaka/micropython,Peetz0r/micropython-esp32,AriZuu/micropython,lowRISC/micropython,jmarcelino/pycom-micropython,pramasoul/micropython,adafruit/micropython,deshipu/micropython,torwag/micropython,kerneltask/micropython,drrk/micropython,torwag/micropython,kerneltask/micropython,mpalomer/micropython,chrisdearman/micropython,torwag/micropython,misterdanb/micropython,dinau/micropython,selste/micropython,deshipu/micropython,adafruit/micropython,henriknelson/micropython,puuu/micropython,blazewicz/micropython,ryannathans/micropython,pramasoul/micropython,tobbad/micropython,adafruit/circuitpython,bvernoux/micropython,dxxb/micropython,blazewicz/micropython,alex-robbins/micropython,blazewicz/micropython,henriknelson/micropython,Timmenem/micropython,swegener/micropython,kerneltask/micropython,mhoffma/micropython,dxxb/micropython,turbinenreiter/micropython,misterdanb/micropython,pozetroninc/micropython,tralamazza/micropython,mpalomer/micropython,mhoffma/micropython,selste/micropython,swegener/micropython,Timmenem/micropython,emfcamp/micropython,HenrikSolver/micropython,jmarcelino/pycom-micropython,redbear/micropython,matthewelse/micropython,kerneltask/micropython,TDAbboud/micropython,tralamazza/micropython,bvernoux/micropython,hosaka/micropython,deshipu/micropython,dinau/micropython,ganshun666/micropython,tobbad/micropython,emfcamp/micropython,redbear/micropython,MrSurly/micropython,henriknelson/micropython,drrk/micropython,Timmenem/micropython,PappaPeppar/micropython,HenrikSolver/micropython,MrSurly/micropython-esp32,swegener/micropython,MrSurly/micropython-esp32,trezor/micropython,TDAbboud/micropython,puuu/micropython,puuu/micropython,alex-march/micropython,trezor/micropython,turbinenreiter/micropython,oopy/micropython,hosaka/micropython,lowRISC/micropython,TDAbboud/micropython,PappaPeppar/micropython,mpalomer/micropython,henriknelson/micropython,tralamazza/micropython,hosaka/micropython,oopy/micropython,jmarcelino/pycom-micropython,misterdanb/micropython,Timmenem/micropython,cwyark/micropython,chrisdearman/micropython,matthewelse/micropython,alex-robbins/micropython,torwag/micropython,pozetroninc/micropython,HenrikSolver/micropython,tobbad/micropython,chrisdearman/micropython,pramasoul/micropython,adafruit/circuitpython,tuc-osg/micropython,hiway/micropython,cwyark/micropython,hiway/micropython,matthewelse/micropython,PappaPeppar/micropython,oopy/micropython,PappaPeppar/micropython,dmazzella/micropython,MrSurly/micropython-esp32,Timmenem/micropython,matthewelse/micropython,trezor/micropython,puuu/micropython,emfcamp/micropython,tuc-osg/micropython,ryannathans/micropython,misterdanb/micropython,tuc-osg/micropython,torwag/micropython,adafruit/micropython,praemdonck/micropython,AriZuu/micropython,swegener/micropython,Peetz0r/micropython-esp32,bvernoux/micropython,lowRISC/micropython,emfcamp/micropython,trezor/micropython,dxxb/micropython,toolmacher/micropython,alex-march/micropython,praemdonck/micropython,adafruit/circuitpython,drrk/micropython,micropython/micropython-esp32,mhoffma/micropython,SHA2017-badge/micropython-esp32,infinnovation/micropython,redbear/micropython,HenrikSolver/micropython,ganshun666/micropython,tobbad/micropython,MrSurly/micropython,dinau/micropython,henriknelson/micropython,hiway/micropython,redbear/micropython,infinnovation/micropython,selste/micropython,chrisdearman/micropython,tuc-osg/micropython,oopy/micropython,MrSurly/micropython-esp32,pozetroninc/micropython,toolmacher/micropython,turbinenreiter/micropython,bvernoux/micropython,alex-march/micropython,praemdonck/micropython,cwyark/micropython,infinnovation/micropython,alex-march/micropython,hosaka/micropython,Peetz0r/micropython-esp32,infinnovation/micropython,pramasoul/micropython,trezor/micropython,Peetz0r/micropython-esp32