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How to extract numbers from a string in Python?
...nly positive integers, try the following:
>>> str = "h3110 23 cat 444.4 rabbit 11 2 dog"
>>> [int(s) for s in str.split() if s.isdigit()]
[23, 11, 2]
I would argue that this is better than the regex example because you don't need another module and it's more readable because you d...
How do I switch between the header and implementation file in Xcode 4?
How do I switch between the header and implementation file in Xcode 4?
7 Answers
7
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How do you install Google frameworks (Play, Accounts, etc.) on a Genymotion virtual device? [duplica
...(Feb 2nd): Contrary to previous reports, it's been discovered that Android 4.4 does in fact work with ARM translation, although it is buggy. Follow the steps the same as before, just make sure you download the 4.4 GApps.
UPDATE-v1.1: I've gotten more up-to-date builds of libhoudini and have updated ...
Python Dictionary Comprehension
...;> d = {n: n**2 for n in range(5)}
>>> print d
{0: 0, 1: 1, 2: 4, 3: 9, 4: 16}
If you want to set them all to True:
>>> d = {n: True for n in range(5)}
>>> print d
{0: True, 1: True, 2: True, 3: True, 4: True}
What you seem to be asking for is a way to set multiple...
Intellij shortcut to convert code to upper or lower case?
...
477
Ctrl + Shift + U
In the future try typing: Ctrl + Shift + A and look for any actions you like...
pandas three-way joining multiple dataframes on columns
...
497
Assumed imports:
import pandas as pd
John Galt's answer is basically a reduce operation. I...
Pairs from single list
... section.
– Apalala
Jan 7 '11 at 18:40
@Apalala: zip does advance the same iterator twice.
– Joc...
Remove rows with all or some NAs (missing values) in data.frame
...cases(final), ]
gene hsap mmul mmus rnor cfam
2 ENSG00000199674 0 2 2 2 2
6 ENSG00000221312 0 1 2 3 2
na.omit is nicer for just removing all NA's. complete.cases allows partial selection by including only certain columns of the dataframe:
> final[comp...
Remove last item from array
...
548
Use splice(startPosition, deleteCount)
array.splice(-1,1)
...
Why is lazy evaluation useful?
...
Vinko Vrsalovic
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answered Nov 5 '08 at 15:07
mipadimipadi
...