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Pandas (software)

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Original author(s)
  
Wes McKinney

Written in
  
Python

Developer(s)
  
Community

Operating system
  
Cross-platform

Stable release
  
0.19.2 / 24 December 2016; 2 months ago (2016-12-24)

Repository
  
https://github.com/pydata/pandas,
https://github.com/pydata/pandas.git

pandas is a software library written for the Python programming language for data manipulation and analysis. In particular, it offers data structures and operations for manipulating numerical tables and time series. pandas is free software released under the three-clause BSD license. The name is derived from the term "Panel data", an econometrics term for multidimensional structured data sets.

Contents

Library features

  • DataFrame object for data manipulation with integrated indexing.
  • Tools for reading and writing data between in-memory data structures and different file formats.
  • Data alignment and integrated handling of missing data.
  • Reshaping and pivoting of data sets.
  • Label-based slicing, fancy indexing, and subsetting of large data sets.
  • Data structure column insertion and deletion.
  • Group by engine allowing split-apply-combine operations on data sets.
  • Data set merging and joining.
  • Hierarchical axis indexing to work with high-dimensional data in a lower-dimensional data structure.
  • Time series-functionality: Date range generation and frequency conversion, moving window statistics, moving window linear regressions, date shifting and lagging.

    • The library is highly optimized for performance, with critical code paths written in Cython or C.

    History

    Developer Wes McKinney started working on pandas in 2008 while at AQR Capital Management out of the need for a high performance, flexible tool to perform quantitative analysis on financial data. Before leaving AQR he was able to convince management to allow him to open source the library.

    Another AQR employee, Chang She, joined the effort in 2012 as the second major contributor to the library.

    References

    Pandas (software) Wikipedia
    (Text) CC BY-SA


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