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not None test in Python [duplicate]
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Oct 19 '10 at 3:24
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Most efficient way to reverse a numpy array
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244
When you create reversed_arr you are creating a view into the original array. You can then ch...
What is the exact problem with multiple inheritance?
...int field
at offset 4 ... "xyz" ... 8 byte double field
at offset 12 ... "speak" ... 4 byte function pointer
class B:
at offset 0 ... "foo" ... 2 byte short field
at offset 2 ... 2 bytes of alignment padding
at offset 4 ... "bar" ... 4 byte array pointer
at offset 8 ... "baz...
Is it possible to make relative link to image in a markdown file in a gist?
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answered Mar 30 '16 at 15:32
markandmarkand
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Is there a better Windows Console Window? [closed]
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291
votes
Sorry for the self-promotion, I'm the author of another Console Emulator, n...
How to use my view helpers in my ActionMailer views?
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326
In the mailer class that you are using to manage your emails:
class ReportMailer < ActionMa...
How to beautify JSON in Python?
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From the command-line:
echo '{"one":1,"two":2}' | python -mjson.tool
which outputs:
{
"one": 1,
"two": 2
}
Programmtically, the Python manual describes pretty-printing JSON:
>>> import json
>>> print json.dumps({'4': 5, '6': 7}, sort_ke...
Using R to list all files with a specified extension
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205
files <- list.files(pattern = "\\.dbf$")
$ at the end means that this is end of string. "...
Convert xlsx to csv in Linux with command line
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246
The Gnumeric spreadsheet application comes with a command line utility called ssconvert that c...
How to filter a dictionary according to an arbitrary condition function?
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Nowadays, in Python 2.7 and up, you can use a dict comprehension:
{k: v for k, v in points.iteritems() if v[0] < 5 and v[1] < 5}
And in Python 3:
{k: v for k, v in points.items() if v[0] < 5 and v[1] < 5}
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