Bad Code Snippet of the Day

Date	2014-02-19 03:47 +1100
Subject	Bad Code Snippet of the Day
From	Chris Angelico <rosuav@gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.7119.1392742039.18130.python-list@python.org> (permalink)

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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

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Bad Code Snippet of the Day Chris Angelico <rosuav@gmail.com> - 2014-02-19 03:47 +1100
  Re: Bad Code Snippet of the Day Rick Johnson <rantingrickjohnson@gmail.com> - 2014-02-18 13:10 -0800
    Re: Bad Code Snippet of the Day Chris Angelico <rosuav@gmail.com> - 2014-02-19 08:21 +1100

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