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How to sort a dataFrame in python pandas by two or more columns?
... b
2 1 4
7 1 3
1 1 2
3 1 2
4 3 2
6 4 4
0 4 3
9 4 3
5 4 1
8 4 1
As commented by @renadeen
Sort isn't in place by default! So you should assign result of the sort method to a variable or add inplace=True to method call.
that is, if you want to reuse df1 as a sorted DataFr...
Is [UIScreen mainScreen].bounds.size becoming orientation-dependent in iOS8?
I ran the following code in both iOS 7 and iOS 8:
18 Answers
18
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Using sed, how do you print the first 'N' characters of a line?
...
Paulo Mattos
15.2k88 gold badges5858 silver badges7171 bronze badges
answered Feb 11 '09 at 20:42
Paul TomblinPaul Tomb...
ASP.NET MVC return empty view
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228
return instance of EmptyResult class
return new EmptyResult();
...
How to execute maven plugin execution directly from command line?
...
This functionality has been implemented as MNG-5768, and is available in Maven 3.3.1.
The change will:
extend direct plugin invocation syntax to allow optional @execution-id parameter, e.g., org.apache.maven.plugins:maven-remote-resources-plugin:1.0:process@executionId....
Pushing empty commits to remote
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83
You won't face any terrible consequence, just the history will look kind of confusing.
You cou...
Fill between two vertical lines in matplotlib
...ou zoom.
For example, let's use axvspan to highlight the x-region between 8 and 14:
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.plot(range(20))
ax.axvspan(8, 14, alpha=0.5, color='red')
plt.show()
You could use fill_betweenx to do this, but the extents (both x and y) of the r...
When to use ko.utils.unwrapObservable?
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answered Mar 8 '12 at 20:46
RP NiemeyerRP Niemeyer
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...
PhpStorm wrap/surround selection?
...e Surround With options dialog box will be displayed.
Update (for PhpStorm8)
For PhpStorm Version 8, tick on checkbox of Preferences -> Editor -> General -> Smart Keys -> Surround selection on typing quote or brace.
Update (for PhpStorm 2016)
For PhpStorm Version 2016, use Cmd + Alt ...
What's the difference between jQuery's replaceWith() and html()?
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answered Apr 8 '09 at 17:12
Paolo BergantinoPaolo Bergantino
434k7676 gold badges504504 silver badges431431 bronze badges
...