Comments on: TurboGears – First Impression

By: Brendan Nooe

Brendan Nooe — Mon, 25 Apr 2011 17:24:49 +0000

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By: Adam Hupp

Adam Hupp — Tue, 25 Oct 2005 14:40:25 +0000

I would consider StopItereration normal flow control, not an error condition. In the normal case an iteration will always throw StopIteration. That goes beyond what I think of as an error. Another example is the common idiom for testing capabilities:

try:

True, False

except NameError:

True, False = 1, 0

By: Daniel

Daniel — Fri, 21 Oct 2005 01:24:13 +0000

> For example, iterators raise StopIteration to signal the end of the iteration–it’s not an error case.

Actually, it is an error case–there is nothing more over which to iterate. The iter.next() method can no longer return a meaningful result and therefore must raise an exception when called.

By: Tim Lesher

Tim Lesher — Thu, 20 Oct 2005 15:11:48 +0000

“Exceptions are for exceptional situations and should not be used for application control flow”

I agree with you… if you’re talking about C++.

Python exceptions are not C++ exceptions, and can’t be read the same way. For example, iterators raise StopIteration to signal the end of the iteration–it’s not an error case.

When in Rome…