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Random row selection in Pandas dataframe

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RVM: Uninstalling all gems of a gemset

... answered Jan 14 '11 at 17:39 Andy LindemanAndy Lindeman 11.5k33 gold badges3333 silver badges3636 bronze badges ...
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Git remote branch deleted, but still it appears in 'branch -a'

... answered Feb 23 '11 at 20:32 Mark LongairMark Longair 358k6565 gold badges384384 silver badges314314 bronze badges ...
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How do I parse JSON with Objective-C?

... answered Oct 17 '11 at 13:35 TommyTommy 95.9k1111 gold badges171171 silver badges190190 bronze badges ...
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Plot smooth line with PyPlot

... brezniczky 27311 silver badge88 bronze badges answered Mar 12 '11 at 17:09 Olivier VerdierOlivier Verdier ...
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How to add an extra column to a NumPy array

... | edited Apr 12 '15 at 11:31 answered Dec 13 '11 at 12:47 ...
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Adding an arbitrary line to a matplotlib plot in ipython notebook

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How to replace part of string by position?

... answered Feb 16 '11 at 11:06 Albin SunnanboAlbin Sunnanbo 43.5k88 gold badges6363 silver badges100100 bronze badges ...
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Should I use the datetime or timestamp data type in MySQL?

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How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly

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