GoTo considered missing

[Denis S. Otkidach]

On Tue, 2 Jul 2002, Terry Hancock wrote:

TH> >     Breaks and Continues are fine for single loops, but:
TH> > What is the approved Python method for getting from the
TH> bottom of a set of
TH> > nested loops to the top?
[...]
TH> You should probably try to use an exception in this
TH> case.
TH>
TH> class ImDone(Exception):
TH> 	# ... I don't remember this bit because I remember
TH> 	# the now-deprecated exceptions-are-strings syntax
TH> 	pass
TH>
TH> try:
TH>    loop ...
TH>       loop ...
TH>          loop ...
TH>             loop ...
TH>                 if
TH> special-reason-I-need-to-bail-out-like-Im-finished-early:
TH>                      raise ImDone
TH> except ImDone:
TH>     # stuff I need to do after finishing

I'd prefer to tell explicitly what loop to break/continue,
something like this:

loop...:
    loop...:
        ...
        if ...:
:           break
        elif ...:
    :       continue
        ...

(place your favourite character insted ":")
where indention is used twice to describe current block and what
block to return to on break/continue.

P.S. Such nested loops aren't so widely used to worry about.