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Groups > comp.lang.python > #39338
| From | Peter Otten <__peter__@web.de> |
|---|---|
| Subject | Re: Data Tree urgent help!!!!!! |
| Date | 2013-02-20 11:46 +0100 |
| Organization | None |
| References | <4abbe91f-a57e-47de-9cf3-5b9574201c83@googlegroups.com> <mailman.2018.1361277272.2939.python-list@python.org> <aojm6oFu09lU1@mid.individual.net> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.2100.1361357186.2939.python-list@python.org> (permalink) |
Leo Breebaart wrote:
> Peter Otten <__peter__@web.de> writes:
>
>> >>> class Name(str):
>> ... def __repr__(self):
>> ... return self
>> ...
>> >>> apple, pear, dog, cat, fork, spoon = map(Name, "apple pear dog cat
>> >>> fork spoon".split())
>
> Is there any reason why you introduced the Name class? In Python
> 2.7 this works equally well if I just do:
>
>>>> apple, pear, dog, cat, fork, spoon = map(str, "apple pear dog cat fork
>>>> spoon".split())
>
> So I was wondering why you used Name.
It was more for fun than profit ;) The OP gave
[apple, dog, fork]
in his examples, and the "normal" no-nonsense approach using a list of
strings would produce
['apple', 'dog', 'fork']
I was tempted to carry this even further with
>>> class Name(str):
... def __repr__(self): return self
...
>>> class Namespace(dict):
... def __missing__(self, key):
... self[key] = result = Name(key)
... return result
...
>>> fruit, pets, cutlery = eval("[apple, pear], [dog, cat], [fork, spoon]",
Namespace())
>>> fruit
[apple, pear]
but resisted until now...
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Data Tree urgent help!!!!!! anadionisio257@gmail.com - 2013-02-19 04:14 -0800
Re: Data Tree urgent help!!!!!! Peter Otten <__peter__@web.de> - 2013-02-19 13:34 +0100
Re: Data Tree urgent help!!!!!! Ana Dionísio <anadionisio257@gmail.com> - 2013-02-19 04:50 -0800
Re: Data Tree urgent help!!!!!! Ana Dionísio <anadionisio257@gmail.com> - 2013-02-19 04:50 -0800
Re: Data Tree urgent help!!!!!! Leo Breebaart <leo@lspace.org> - 2013-02-20 10:18 +0000
Re: Data Tree urgent help!!!!!! Peter Otten <__peter__@web.de> - 2013-02-20 11:46 +0100
Re: Data Tree urgent help!!!!!! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-20 22:01 +1100
Re: Data Tree urgent help!!!!!! Chris Angelico <rosuav@gmail.com> - 2013-02-20 22:16 +1100
Re: Data Tree urgent help!!!!!! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-20 22:47 +1100
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