Improve exception handling in context managers (keyword "with")
Improve exception handling in context managers (keyword "with")

Mozhuowen/brython,molebot/brython,Hasimir/brython,Hasimir/brython,kikocorreoso/brython,amrdraz/brython,Isendir/brython,molebot/brython,Isendir/brython,brython-dev/brython,molebot/brython,amrdraz/brython,Isendir/brython,jonathanverner/brython,Hasimir/brython,molebot/brython,JohnDenker/brython,Isendir/brython,JohnDenker/brython,kikocorreoso/brython,olemis/brython,jonathanverner/brython,olemis/brython,jonathanverner/brython,olemis/brython,JohnDenker/brython,amrdraz/brython,brython-dev/brython,Mozhuowen/brython,JohnDenker/brython,Mozhuowen/brython,amrdraz/brython,Hasimir/brython,kikocorreoso/brython,Mozhuowen/brython,olemis/brython,brython-dev/brython,jonathanverner/brython