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Pandas - How to flatten a hierarchical index in columns
I have a data frame with a hierarchical index in axis 1 (columns) (from a groupby.agg operation):
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Getting the array length of a 2D array in Java
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What are the mathematical/computational principles behind this game?
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Finite Projective Geometries
The axioms of projective (plane) geometry are slightly differen...
Converting numpy dtypes to native python types
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How do I include negative decimal numbers in this regular expression?
...ne with positive values, but I want it to also allow negative values e.g. -10, -125.5 etc.
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Validate that a string is a positive integer
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How can I convert a Unix timestamp to DateTime and vice versa?
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What does this square bracket and parenthesis bracket notation mean [first1,last1)?
I have seen number ranges represented as [first1,last1) and [first2,last2) .
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Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]
I want to toggle a variable between 0 and 1. If it's 0 I want to set it to 1, else if it's 1 I want to set it to 0.
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How to find the installed pandas version
...sion__:
In [76]: import pandas as pd
In [77]: pd.__version__
Out[77]: '0.12.0-933-g281dc4e'
Pandas also provides a utility function, pd.show_versions(), which reports the version of its dependencies as well:
In [53]: pd.show_versions(as_json=False)
INSTALLED VERSIONS
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