On Sun, May 29, 2011 at 10:58 PM, Chris Barker wrote:
> > On 5/28/2011 3:40 PM, Robert wrote:
> >> (myarray in mylist) turns into mylist.__contains__(myarray).
> >> Only the list object is ever checked for this method. There is no
> >> paired method myarray.__rcontains__(mylist) so there is nothin
l the available numpy function names.
________
From: Neil Crighton
To: numpy-discussion@scipy.org
Sent: Sun, May 29, 2011 10:03:25 AM
Subject: Re: [Numpy-discussion] finding elements that match any in a set
Michael Katz yahoo.com> writes:
> Yes, thanks, np.in1d is w
> On 5/28/2011 3:40 PM, Robert wrote:
>> (myarray in mylist) turns into mylist.__contains__(myarray).
>> Only the list object is ever checked for this method. There is no
>> paired method myarray.__rcontains__(mylist) so there is nothing that
>> numpy can override to make this operation do anything
Michael Katz yahoo.com> writes:
> Yes, thanks, np.in1d is what I needed. I didn't know how to find that.
Did you check in the documentation? If so, where did you check? Would you have
found it if it was in the 'See also' section of where()?
(http://docs.scipy.org/doc/numpy/reference/generated/n
On 5/28/2011 3:46 PM, Robert Kern wrote:
> mylist.__contains__(x), it should treat all objects exactly
> the same: check if it equals any item that it contains. There is no
> way for it to say, "Oh, I don't know how to deal with this type, so
> I'll pass it over to x.__contains__()".
Which makes
On 5/28/2011 3:40 PM, Robert wrote:
> (myarray in mylist) turns into mylist.__contains__(myarray).
> Only the list object is ever checked for this method. There is no
> paired method myarray.__rcontains__(mylist) so there is nothing that
> numpy can override to make this operation do anything diffe
On Sat, May 28, 2011 at 14:40, Michael Katz wrote:
> Thanks for the explanation. It sounds like Python needs __rcontains__.
Not really. For the mathematical operators, there are good ways for
the operands to "know" what types they can deal with and which they
can't. For mylist.__contains__(x), it
Thanks for the explanation. It sounds like Python needs __rcontains__.
From: Robert Kern
To: Discussion of Numerical Python
Sent: Sat, May 28, 2011 12:30:05 PM
Subject: Re: [Numpy-discussion] finding elements that match any in a set
On Sat, May 28, 2011 at 14
On Sat, May 28, 2011 at 14:18, Michael Katz wrote:
> Yes, thanks, np.in1d is what I needed. I didn't know how to find that.
>
> It still seems counterintuitive to me that
>
> indexes = np.where( records.integer_field in values )
>
> does not work whereas
>
> indexes = np.where( records.int
d get overridden the
same way.
From: Christopher Barker
To: Discussion of Numerical Python
Sent: Fri, May 27, 2011 5:48:37 PM
Subject: Re: [Numpy-discussion] finding elements that match any in a set
On 5/27/11 9:48 AM, Michael Katz wrote:
> I have a numpy array, rec
On 5/27/11 9:48 AM, Michael Katz wrote:
> I have a numpy array, records, with named fields including a field named
> "integer_field". I have an array (or list) of values of interest, and I
> want to get the indexes where integer_field has any of those values.
>
> Because I can do
>
> indexes = np.w
On Fri, May 27, 2011 at 12:48 PM, Michael Katz
wrote:
> I have a numpy array, records, with named fields including a field named
> "integer_field". I have an array (or list) of values of interest, and I want
> to get the indexes where integer_field has any of those values.
>
> Because I can do
>
>
I have a numpy array, records, with named fields including a field named
"integer_field". I have an array (or list) of values of interest, and I want to
get the indexes where integer_field has any of those values.
Because I can do
indexes = np.where( records.integer_field > 5 )
I thought I
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