You probably already saw the syntax but it is not common in the "except" part: For example, the following: catch_everything = True try: raise Exception() except Exception if catch_everything else (): print("Caught!") It is the same as: catch_everything = True exception_to_catch = Exception if catch_everything else () try: raise Exception() except exception_to_catch: print("Caught!") Basically the argument for the "except" keyword can be a variable and therefore dynamic in nature. The () is because "except" accepts a tuple of exception classes and () is the empty tuple so it is accepted. On Thu, May 19, 2022 at 06:45:59AM -0000, nadav.misgav@gmail.com wrote:
Awesome! never seen this syntax used before and the above libraries are not using it.
Can you elaborate on the else part ? Why is it needed for the syntax to be correct and could you put any expression in the parenthesis ? _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-leave@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/XFFIZ4... Code of Conduct: http://python.org/psf/codeofconduct/