Exception handling in Python 3.x

[Ethan Furman]

Ethan Furman wrote:
> Arnaud Delobelle wrote:
>>
>> I missed the start of this discussion but there are two simpler ways:
>>
>> def func(iterable):
>>     for x in iterable:
>>         print(x)
>>         return
>>     raise ValueError("... empty iterable")
> 
> 
> For the immediate case this is a cool solution.


Drat -- I have to take that back -- the OP stated:

 > The intention is:
 >
 > * detect an empty iterator by catching StopIteration;
 > * if the iterator is empty, raise a ValueError;
 > * otherwise process the iterator.


Presumably, the print(x) would be replaced with code that processed the 
entire iterable (including x, of course), and not just its first element.

~Ethan~