Bad Code Snippet of the Day
I call this Russian Exception Roulette. It came about because of some discussions on python-ideas regarding the new PEP 463 and exception handling. try: exc = getattr(__builtins__,random.choice(list(filter(lambda x: x.endswith(Error),dir(__builtins__) f() except exc: print(You win!) Given a function f(), defined elsewhere, what will this do? Note that this was developed on Python 3.4, and some of the details may be different on other versions (especially 2.x). ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Bad Code Snippet of the Day
On 2/18/2014 11:47 AM, Chris Angelico wrote: I call this Russian Exception Roulette. It came about because of some discussions on python-ideas regarding the new PEP 463 and exception handling. try: exc = getattr(__builtins__,random.choice(list(filter(lambda x: x.endswith(Error),dir(__builtins__) f() except exc: print(You win!) Given a function f(), defined elsewhere, what will this do? I am not sure what you are asking or what your point is. If f happens to raise the randomly selected exception, it prints 'You win!', otherwise it does nothing. Note that this was developed on Python 3.4, and some of the details may be different on other versions (especially 2.x). -- Terry Jan Reedy -- https://mail.python.org/mailman/listinfo/python-list
Re: Bad Code Snippet of the Day
On Wed, Feb 19, 2014 at 7:41 AM, Terry Reedy tjre...@udel.edu wrote: On 2/18/2014 11:47 AM, Chris Angelico wrote: I call this Russian Exception Roulette. It came about because of some discussions on python-ideas regarding the new PEP 463 and exception handling. try: exc = getattr(__builtins__,random.choice(list(filter(lambda x: x.endswith(Error),dir(__builtins__) f() except exc: print(You win!) Given a function f(), defined elsewhere, what will this do? I am not sure what you are asking or what your point is. If f happens to raise the randomly selected exception, it prints 'You win!', otherwise it does nothing. My point is that this is a piece of obscure code: the try block affects the interpretation of the except that's associated with it. Just playing around with obfuscated Python, for amusement value. The rules of Python are so simple that they allow stupidity like this, and the interpreter just goes, So? Of course that's how it is!. I like it. :) ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Bad Code Snippet of the Day
On Tuesday, February 18, 2014 10:47:15 AM UTC-6, Chris Angelico wrote: I call this Russian Exception Roulette. It came about because of some discussions on python-ideas regarding the new PEP 463 and exception handling. try: exc = getattr(__builtins__,random.choice(list(filter(lambda x: x.endswith(Error),dir(__builtins__) f() except exc: print(You win!) Given a function f(), defined elsewhere, what will this do? For get about f(), it will throw a NameError since random was not imported. Beyond that this code (either conscientiously or unconsciously) exposes the onerous and obfuscation of a language design that coddles a global function nightmare paradigm over the elegance of true OOP -- talk about cutting off your nose just to spite your face! -- https://mail.python.org/mailman/listinfo/python-list
Re: Bad Code Snippet of the Day
On Wed, Feb 19, 2014 at 8:10 AM, Rick Johnson rantingrickjohn...@gmail.com wrote: Beyond that this code (either conscientiously or unconsciously) exposes the onerous and obfuscation of a language design that coddles a global function nightmare paradigm over the elegance of true OOP -- talk about cutting off your nose just to spite your face! Humour me, Rick. Pretend I've been awake for 22 hours straight, am wired on sleep-deprivation and energy drinks, and have no idea what you're talking about. How exactly does the ability to dynamically determine which exception to catch coddle a functional paradigm, and how is it not object oriented? Also, my face doesn't much care for my nose. It gets in the way. If I cut my nose off, my face would be happy with me. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: Bad Code Snippet of the Day
In article mailman.7122.1392756159.18130.python-l...@python.org, Terry Reedy tjre...@udel.edu wrote: On 2/18/2014 11:47 AM, Chris Angelico wrote: I call this Russian Exception Roulette. It came about because of some discussions on python-ideas regarding the new PEP 463 and exception handling. try: exc = getattr(__builtins__,random.choice(list(filter(lambda x: x.endswith(Error),dir(__builtins__) f() except exc: print(You win!) Given a function f(), defined elsewhere, what will this do? I am not sure what you are asking or what your point is. If f happens to raise the randomly selected exception, it prints 'You win!', otherwise it does nothing. def f(): print(You win!) problem solved :-) -- https://mail.python.org/mailman/listinfo/python-list
