ANNOUNCE: 'goto' for Python
Gonçalo Rodrigues
op73418 at mail.telepac.pt
Thu Apr 1 08:17:29 EST 2004
On Thu, 01 Apr 2004 08:10:29 +0100, Richie Hindle <richie at entrian.com>
wrote:
>
>Entrian Solutions is pleased to announce version 1.0 of the 'goto' module.
>
>This adds the 'goto' and 'comefrom' keywords to Python 2.3, adding
>flexibility to Python's control flow mechanisms and allowing Python
>programmers to use many common control flow idioms that were previously
>denied to them.
>
>'goto' example: breaking out from a deeply nested loop:
>
> from goto import goto, label
> for i in range(1, 10):
> for j in range(1, 20):
> for k in range(1, 30):
> print i, j, k
> if k == 3:
> goto .end
> label .end
> print "Finished\n"
>
>
>'comefrom' example: letting cleanup code take control after an error.
>
> from goto import comefrom, label
> def bigFunction():
> setUp()
> if not doFirstTask():
> label .failed
> if not doSecondTask():
> label .failed
> if not doThirdTask():
> label .failed
>
> comefrom .failed
> cleanUp()
>
>Computed 'goto's are also supported - see the documentation for details.
>Computed 'comefrom's are planned for a future release.
>
>Documentation and further examples:
> http://entrian.com/goto/index.html
>
>Downloads:
> http://entrian.com/goto/download.html
>
>The 'goto' module is released under the Python Software Foundation
>license, and requires Python 2.3 or later.
>
>Please note that this version does not work at the interactive Python
>prompt - code importing 'goto' must be in a .py file. This restriction
>will hopefully be lifted in a future release.
Thanks a lot!! Now I at least have a chance to shame my perlite
friends in obfuscation contests with a suitably spaghetified Python
code. I'm getting all warm and fuzzy with the possibilities this
module opens.
Once again, thanks a lot for your efforts to improve the Python
language, with my best regards,
G. Rodrigues
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