大约有 48,000 项符合查询结果（耗时：0.0933秒） [XML]
How do I create test and train samples from one dataframe with pandas?
...
I would just use numpy's randn:
In [11]: df = pd.DataFrame(np.random.randn(100, 2))
In [12]: msk = np.random.rand(len(df)) < 0.8
In [13]: train = df[msk]
In [14]: test = df[~msk]
And just to see this has worked:
In [15]: len(test)
Out[15]: 21
In [16]:...
How can I make an svg scale with its parent container?
...px',
height: 'auto',
}}
>
<svg
width="100%"
viewBox="113 128 972 600"
preserveAspectRatio="xMidYMid meet"
>
<g> ... </g>
</svg>
</div>
Here's what is happening in the above sample code:
VIEWBOX
MDN: https://developer.mozilla.org/en-US/...
Removing X-Powered-By
...ersions as well.
– Mike Purcell
Jan 11 '14 at 7:44
2
@David, What he means is it does not add to ...
Image inside div has extra space below the image
... |
edited Jan 16 at 12:11
answered Apr 27 '11 at 12:42
Q...
how do i remove a comma off the end of a string?
...
Ben RussellBen Russell
1,2931111 silver badges1515 bronze badges
...
How do I use shell variables in an awk script?
...{?
– Darion Badlydone
Oct 29 '19 at 11:10
@DarionBadlydone Try this awk -v repo="$1" -v tag="$2" 'BEGIN {print "repo="...
What is the closest thing Windows has to fork()?
...
Community♦
111 silver badge
answered Jun 12 '09 at 7:07
Laurynas BiveinisLaurynas Biveinis
...
How to split a long regular expression into multiple lines in JavaScript?
...
11 Answers
11
Active
...
How to implement a secure REST API with node.js
...
11
I just finished a sample app that does this in a pretty basic, but clear way. It uses mongoose...
How can I install a local gem?
...
Ross Attrill
2,17711 gold badge1717 silver badges2424 bronze badges
answered Oct 20 '08 at 22:35
Chris BunchChris Bunch...