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How to make a flat list out of list of lists?
...e in the standard library:
$ python -mtimeit -s'l=[[1,2,3],[4,5,6], [7], [8,9]]*99' '[item for sublist in l for item in sublist]'
10000 loops, best of 3: 143 usec per loop
$ python -mtimeit -s'l=[[1,2,3],[4,5,6], [7], [8,9]]*99' 'sum(l, [])'
1000 loops, best of 3: 969 usec per loop
$ python -mtimei...
Disable ALL CAPS menu items in Visual Studio 2013
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368
Yes - in the new Visual Studio 2013 (as in VS 2012), MS reinforced their design decision to make...
List comprehension rebinds names even after scope of comprehension. Is this right?
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answered Nov 16 '10 at 21:48
Steven RumbalskiSteven Rumbalski
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Python Dictionary to URL Parameters
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xiº
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answered Aug 5 '09 at 14:16
mipadimipadi
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How to install python3 version of package via pip on Ubuntu?
...ot.
– Lennart Regebro
May 26 '12 at 8:07
3
Yes, virtualenv installs pip.
– ...
How to un-escape a backslash-escaped string?
... ChristopheDChristopheD
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Is it possible to have multiple statements in a python lambda expression?
...d in the heapq module.
>>> import heapq
>>> l = [5,2,6,8,3,5]
>>> heapq.nsmallest(l, 2)
[2, 3]
So just use:
map(lambda x: heapq.nsmallest(x,2)[1], list_of_lists)
It's also usually considered clearer to use a list comprehension, which avoids the lambda altogether:
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Override Python's 'in' operator?
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edited Sep 18 '15 at 8:08
Holt
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a...
git: Show index diff in commit message as comment
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Alan Haggai AlaviAlan Haggai Alavi
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Where is Maven' settings.xml located on mac os?
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