Pandas - Powerful Python Data Analysis Toolkit

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Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions. It supports aggregating or transforming data with a powerful group by engine allowing split-apply-combine operations on data sets, High performance merging and joining of data sets, Time series-functionality, Hierarchical axis indexing and lot more.

http://pandas.pydata.org/
https://github.com/pydata/pandas
http://code.google.com/p/pandas

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