>In your example when would isinstance(__exit_context__, ReturnContext) >be True and when would it be False? What would __exit_context__.value >be? I can't think of a sensible meaning for it. If no exception occurs, >is the value returned by f supposed to be 10/x or __exit_context__.value >+ 1 # whatever that is >Best wishes >Rob Cliffe
Dear Rob, isinstance(__exit_context__, ReturnContext) would only be True, when the try, except or else block is left using a return statement. __exit_context__.value would be the return value of f(x), in that case 10/x. Currently it is not possible to access this value in the finally block, but it can be overwritten, as the return statement is compiled into a new RETURN_VALUE opcode. In this example, f(x) would return 10/x + 1 if x != 0 else 0. I think that this magic variable would make error handling much more easier. What do you think? Best wishes Marius Spix -- https://mail.python.org/mailman3//lists/python-list.python.org
