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Good ways to sort a queryset? - Django
...rdered = sorted(auths, key=operator.attrgetter('last_name'))
In Django 1.4 and newer you can order by providing multiple fields.
Reference: https://docs.djangoproject.com/en/dev/ref/models/querysets/#order-by
order_by(*fields)
By default, results returned by a QuerySet are ordered by the orderin...
Is there an XSLT name-of element?
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Robert Gould
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answered Feb 25 '09 at 9:19
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virtualenvwrapper and Python 3
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unutbuunutbu
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Get current AUTO_INCREMENT value for any table
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edited Aug 1 '16 at 5:46
Harshil Sharma
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How to express a NOT IN query with ActiveRecord/Rails?
...e this since it seems a lot of people come to this, if you are using Rails 4 look at the answers by Trung Lê` and VinniVidiVicci.
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How to get a tab character?
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Aeyoun
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answered Mar 12 '12 at 2:24
josh3736josh3736
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How to shift a column in Pandas DataFrame
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In [18]: a
Out[18]:
x1 x2
0 0 5
1 1 6
2 2 7
3 3 8
4 4 9
In [19]: a.x2 = a.x2.shift(1)
In [20]: a
Out[20]:
x1 x2
0 0 NaN
1 1 5
2 2 6
3 3 7
4 4 8
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json_decode to array
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edited Apr 23 '14 at 17:29
Francisco Corrales Morales
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What are some compelling use cases for dependent method types?
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4 Answers
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Find indices of elements equal to zero in a NumPy array
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numpy.where() is my favorite.
>>> x = numpy.array([1,0,2,0,3,0,4,5,6,7,8])
>>> numpy.where(x == 0)[0]
array([1, 3, 5])
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