Dangerous behavior of list(generator)

[Terry Reedy]

On 12/13/2009 10:29 PM, exarkun at twistedmatrix.com wrote:

> Doesn't matter. Sometimes it makes sense to call it directly.

It only makes sense to call next (or .__next__) when you are prepared to 
explicitly catch StopIteration within a try..except construct.
You did not catch it, so it stopped execution.

Let me repeat: StopIteration is intended only for stopping iteration. 
Outside that use, it is a normal exception with no special meaning.

Terry Jan Reedy