On Wed, Jan 14, 2009 at 11:25 AM, bob gailer wrote:
> How many ways are there in Python to go thru a list (and apply a function to
> each element)? The ones I know are:
> while
> for
> list comprehension
> map()
filter() is more appropriate than map() for this problem
generator expression
itertoo
Noufal Ibrahim wrote:
bob gailer wrote:
2) "looks bad" and "is ugly" are emotional responses. What are you
feeling and wanting when you say those things?
It's hard for me to qualify really but my general idea of list
comprehensions is that they transform and filter lists creating other
li
bob gailer wrote:
2) "looks bad" and "is ugly" are emotional responses. What are you
feeling and wanting when you say those things?
It's hard for me to qualify really but my general idea of list
comprehensions is that they transform and filter lists creating other lists.
For instance, I'd
On Mon, Jan 12, 2009 at 12:21 PM, bob gailer wrote:
> Noufal Ibrahim wrote:
>>
>> Hello everyone,
>> What is the pythonic way of selecting the first element of a list
>> matching some condition?
>> I often end up using
>>
>> [x for x in lst if cond(x)][0]
>>
>> This looks b
> 1) itertools.dropwhile(cond, lst) will return a list with the desired element
> first.
i think in order to use this, the OP needs to invert his Boolean logic
because it *drops* elements while the conditional is True. as soon as
it hits False the 1st time, all remaining elements (including the o
Noufal Ibrahim wrote:
Hello everyone,
What is the pythonic way of selecting the first element of a
list matching some condition?
I often end up using
[x for x in lst if cond(x)][0]
This looks bad and raises IndexError if nothing is found which
is ugly too.
1) i
Hello everyone,
What is the pythonic was of selecting the first element of a
list matching some condition?
I often end up using
[x for x in lst if cond(x)][0]
This looks bad and raises IndexError if nothing is found which
is ugly too.
Thanks.
--
~noufal
http://ni
