Version 0.5.0 (October 24, 2011)¶
DataFrame.alignmethod with standard join options
read_tablemethods to optionally try to parse dates in the index columns
Indexfor identifying duplicate values more easily (ENH5c)
Added column attribute access to DataFrame.
DataFrame will show index level names in console output (GH334)
set_indexfunction for creating a DataFrame index from its existing columns
VBENCH Major performance improvements in file parsing functions
VBENCH Added Cython function for converting tuples to ndarray very fast. Speeds up many MultiIndex-related operations
VBENCH Refactored merging / joining code into a tidy class and disabled unnecessary computations in the float/object case, thus getting about 10% better performance (GH211)
VBENCH Improved speed of
DataFrame.xson mixed-type DataFrame objects by about 5x, regression from 0.3.0 (GH215)
VBENCH With new
DataFrame.alignmethod, speeding up binary operations between differently-indexed DataFrame objects by 10-25%.
VBENCH Significantly sped up conversion of nested dict into DataFrame (GH212)
VBENCH Significantly speed up DataFrame
counton large mixed-type DataFrame objects
A total of 9 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.
Aman Thakral +
Luca Beltrame +
Nick Pentreath +
Thomas Kluyver +
Yaroslav Halchenko +