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get list of pandas dataframe columns based on data type
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Two versions of python on linux. how to make 2.7 the default
...ed by #! /usr/bin/env python. You can usually get away with running Python 2.6 scripts in 2.7, but do you want to risk it?
On top of that, monkeying with /usr/bin can break your package manager's ability to manage packages. And changing the order of directories in your PATH will affect a lot of oth...
Check if all elements in a list are identical
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C++ preprocessor __VA_ARGS__ number of arguments
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How do I replace NA values with zeros in an R dataframe?
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Regular Expression to reformat a US phone number in Javascript
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ValueError: setting an array element with a sequence
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From the code you showed us, the only thing we can tell is that you are trying to create an ar...
How to sort git tags by version string order of form rc-X.Y.Z.W?
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Use version sort
git tag -l | sort -V
or for git version >= 2.0
git tag -l --sort=v:refname
git tag -l --sort=-v:refname # reverse
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how to rotate a bitmap 90 degrees
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256
You can also try this one
Matrix matrix = new Matrix();
matrix.postRotate(90);
Bitmap scale...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...: pd.Series(df.Letter.values,index=df.Position).to_dict()
Out[9]: {1: 'a', 2: 'b', 3: 'c', 4: 'd', 5: 'e'}
Speed comparion (using Wouter's method)
In [6]: df = pd.DataFrame(randint(0,10,10000).reshape(5000,2),columns=list('AB'))
In [7]: %timeit dict(zip(df.A,df.B))
1000 loops, best of 3: 1.27 ms...