Calvin Spealman wrote:
-1 on colons in the expression like that. I like the idea of being able to handle an exception in generator expressions and the like, but I've never seen a syntax I liked. I think I've favored the idea of something like `float(x) except float('nan') if ValueError` thinking it reads more naturally as an expression, puts the real logic ("convert x to a float or get a NaN float") together, which I think makes sense.
Yes, I agree about the colons. They have no purpose. I was just blindly following the try-except. (Duh! on my part) So, in the simple example: x = float(string) except ValueError float('nan') But possibly the exception tuples now have to be explicitly tuples? x = float(string) except (ValueError,) float('nan') So the general case would be something like exception_expression :== nominal_value {except exception_tuple exception_value}* {except default_value} Jeff McAninch -- ========================== Jeffrey E. McAninch, PhD Physicist, X-2-IFD Los Alamos National Laboratory Phone: 505-667-0374 Email: mcaninch@lanl.gov ==========================