On Jun 18, 11:56 pm, nn prueba...@latinmail.com wrote:
On Jun 18, 8:38 am, guthrie grguth...@gmail.com wrote:
On Jun 17, 6:38 pm, Steven Samuel Cole steven.samuel.c...@gmail.com
wrote:
Still don't really understand why my initial code didn't work, though...
Your code certainly looks
In article 13e776b0-6ca8-479e-ba82-eb5b7eb8f...@a5g2000pre.googlegroups.com,
ssc steven.samuel.c...@gmail.com wrote:
On Jun 18, 10:49=A0am, Jon Clements jon...@googlemail.com wrote:
Why are you doing this? I'm assuming a code to title look up is
required (don't forget military, royal and
On Jun 18, 10:49 am, Jon Clements jon...@googlemail.com wrote:
Why are you doing this? I'm assuming a code to title look up is
required (don't forget military, royal and honorable titles
etc... :) )
I'm in New Zealand. Hardly any need for military titles, rarely any
for royal and damn sure
On Jun 18, 11:28 pm, greg g...@cosc.canterbury.ac.nz wrote:
nn wrote:
This is certainly an odd one. This code works fine under 2.6 but fails
in Python 3.1.
class x:
... lst=[2]
... gen=[lst.index(e) for e in lst]
In 3.x it was decided that the loop variables in a list
On Jun 19, 2009, at 8:45 AM, Bruno Desthuilliers wrote:
class Foo(object):
... bar = ['a', 'b', 'c']
... baaz = list((b, b) for b in bar)
but it indeed looks like using bar.index *in a generator expression*
fails (at least in 2.5.2) :
class Foo(object):
... bar = ['a', 'b',
guthrie wrote:
-- I don't get this - the only local loop variable is e, not lst.
Yes, but the whole list comprehension gets put into
a nested function, including the part that evaluates
lst. (It's not strictly *necessary* to do that, but
that's the way it happens to be implemented at the
Emile van Sebille a écrit :
On 6/17/2009 3:54 PM ssc said...
Wow! Didn't expect that kind of instant support. Thank you very much,
I'll give both zip and enumerate a try.
The code I've shown is actually copied pretty straight from a Django
form class, but I didn't want to mention that as not
On Jun 19, 1:45 pm, Bruno Desthuilliers bruno.
42.desthuilli...@websiteburo.invalid wrote:
[...]
but it indeed looks like using bar.index *in a generator expression*
fails (at least in 2.5.2) :
class Foo(object):
... bar = ['a', 'b', 'c']
... baaz = list((bar.index(b), b) for b
Does the generator expression have its own little namespace or so ?
Yes, generators create a new scope:
http://docs.python.org/reference/expressions.html#grammar-token-generator_expression
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http://mail.python.org/mailman/listinfo/python-list
ryles wrote:
However, in 3.0 list
comprehensions are actually treated as list(generator).
That's not quite true -- it would be rather inefficient
if it was. The code generated for the LC is much the same
as it was in 2.x. But the whole LC is put into a nested
function so that the loop
On Jun 17, 6:38 pm, Steven Samuel Cole steven.samuel.c...@gmail.com
wrote:
Still don't really understand why my initial code didn't work, though...
Your code certainly looks reasonable, and looks to me like it should
work. The comment of partial namespace is interesting, but
unconvincing (to me)
On Jun 18, 8:38 am, guthrie grguth...@gmail.com wrote:
On Jun 17, 6:38 pm, Steven Samuel Cole steven.samuel.c...@gmail.com
wrote:
Still don't really understand why my initial code didn't work, though...
Your code certainly looks reasonable, and looks to me like it should
work. The comment
On Jun 18, 9:56 am, nn prueba...@latinmail.com wrote:
On Jun 18, 8:38 am, guthrie grguth...@gmail.com wrote:
On Jun 17, 6:38 pm, Steven Samuel Cole steven.samuel.c...@gmail.com
wrote:
Still don't really understand why my initial code didn't work, though...
Your code certainly looks
ssc wrote:
class SignupForm(Form):
titles = ['Dr', 'Miss', 'Mr', 'Mrs', 'Ms',]
title_choices = [(0, '')] + list((titles.index(t)+1, t) for t in
titles)
Does the generator expression have its own little namespace or so ?
Yes. The generator expression is a function, with its
own
nn wrote:
This is certainly an odd one. This code works fine under 2.6 but fails
in Python 3.1.
class x:
... lst=[2]
... gen=[lst.index(e) for e in lst]
In 3.x it was decided that the loop variables in a list
comprehension should be local, and not leak into the
surrounding scope.
Hello,
I am trying to generate this list of tuples:
[(0, ''), (1, 'Dr'), (2, 'Miss'), (3, 'Mr'), (4, 'Mrs'), (5, 'Ms')]
My code works fine in the Python shell:
titles = ['Dr', 'Miss', 'Mr', 'Mrs', 'Ms',]
title_choices = [(0, '')] + list((titles.index(t)+1, t) for t in titles)
title_choices
On 6/17/2009 3:19 PM ssc said...
Hello,
I am trying to generate this list of tuples:
[(0, ''), (1, 'Dr'), (2, 'Miss'), (3, 'Mr'), (4, 'Mrs'), (5, 'Ms')]
My code works fine in the Python shell:
titles = ['Dr', 'Miss', 'Mr', 'Mrs', 'Ms',]
title_choices = [(0, '')] + list((titles.index(t)+1, t)
On Wed, Jun 17, 2009 at 3:19 PM, sscsteven.samuel.c...@gmail.com wrote:
Hello,
I am trying to generate this list of tuples:
[(0, ''), (1, 'Dr'), (2, 'Miss'), (3, 'Mr'), (4, 'Mrs'), (5, 'Ms')]
My code works fine in the Python shell:
titles = ['Dr', 'Miss', 'Mr', 'Mrs', 'Ms',]
title_choices
On Wed, 2009-06-17 at 15:38 -0700, Chris Rebert wrote:
See what Emile said, but here's a nicer way to code it, IMHO:
titles = ['Dr', 'Miss', 'Mr', 'Mrs', 'Ms']
title_choices = zip(range(len(titles)+1), ['']+titles)
zip() to the rescue!
How about:
enumerate([''] + titles)
--
On 6/17/2009 3:41 PM Jason Tackaberry said...
How about:
enumerate([''] + titles)
or perhaps, depending on usage...
list(enumerate(titles))
Emile
--
http://mail.python.org/mailman/listinfo/python-list
On Jun 17, 11:19 pm, ssc steven.samuel.c...@gmail.com wrote:
Hello,
I am trying to generate this list of tuples:
[(0, ''), (1, 'Dr'), (2, 'Miss'), (3, 'Mr'), (4, 'Mrs'), (5, 'Ms')]
My code works fine in the Python shell:
titles = ['Dr', 'Miss', 'Mr', 'Mrs', 'Ms',]
title_choices = [(0,
Wow! Didn't expect that kind of instant support. Thank you very much,
I'll give both zip and enumerate a try.
The code I've shown is actually copied pretty straight from a Django
form class, but I didn't want to mention that as not to dilute the
conversation. Don't think it matters, anyway. This
On Wed, Jun 17, 2009 at 3:54 PM, sscsteven.samuel.c...@gmail.com wrote:
Wow! Didn't expect that kind of instant support. Thank you very much,
I'll give both zip and enumerate a try.
The code I've shown is actually copied pretty straight from a Django
form class, but I didn't want to mention
On 6/17/2009 3:54 PM ssc said...
Wow! Didn't expect that kind of instant support. Thank you very much,
I'll give both zip and enumerate a try.
The code I've shown is actually copied pretty straight from a Django
form class, but I didn't want to mention that as not to dilute the
conversation.
Both zip and enumerate do the trick. Thanks for the pointers, that's 2
more built-ins under my belt :-)
Still don't really understand why my initial code didn't work, though...
Thanks everyone! :-)
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