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Python creating a dictionary of lists
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>>> d
defaultdict(<type 'list'>, {1: ['1'], 2: ['1', '2'], 3: ['2']})
>>> d.items()
[(1, ['1']), (2, ['1', '2']), (3, ['2'])]
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How to do a less than or equal to filter in Django queryset?
...ile called profile. This field is called level and is an integer between 0-3.
1 Answer
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How to undo 'git reset'?
... reset HEAD~ and want to undo it. My reflog looks like this:
$ git reflog
3f6db14 HEAD@{0}: HEAD~: updating HEAD
d27924e HEAD@{1}: checkout: moving from d27924e0fe16776f0d0f1ee2933a0334a4787b4c
[...]
The first line says that HEAD 0 positions ago (in other words, the current position) is 3f6db14; ...
How to access pandas groupby dataframe by key
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In [21]: gb.get_group('foo')
Out[21]:
A B C
0 foo 1.624345 5
2 foo -0.528172 11
4 foo 0.865408 14
Note: This doesn't require creating an intermediary dictionary / copy of every subdataframe for every group, so will be much more memory-efficient that creating the naive di...
Longest line in a file
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answered Jul 7 '10 at 3:33
DanielDaniel
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Intersection of two lists in Bash
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answered Apr 23 '10 at 3:58
ghostdog74ghostdog74
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Reference list item by index within Django template?
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edited Dec 19 '18 at 21:31
Mauricio Cortazar
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ActiveRecord, has_many :through, and Polymorphic Associations
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3 Answers
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Where can I get a list of Ansible pre-defined variables?
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203
Argh! From the FAQ:
How do I see a list of all of the ansible_ variables?
Ansible by default ga...
Python extending with - using super() Python 3 vs Python 2
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super() (without arguments) was introduced in Python 3 (along with __class__):
super() -> same as super(__class__, self)
so that would be the Python 2 equivalent for new-style classes:
super(CurrentClass, self)
for old-style classes you can always use:
class Classname...