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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.〔http://pandas.pydata.org/pandas-docs/stable/overview.html#license〕 ==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. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pandas (software)」の詳細全文を読む スポンサード リンク
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