Version 0.6.1 (December 13, 2011)#

New features#

Performance improvements#

  • Improve memory usage of DataFrame.describe (do not copy data unnecessarily) (PR #425)

  • Optimize scalar value lookups in the general case by 25% or more in Series and DataFrame

  • Fix performance regression in cross-sectional count in DataFrame, affecting DataFrame.dropna speed

  • Column deletion in DataFrame copies no data (computes views on blocks) (GH #158)


A total of 7 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.

  • Dieter Vandenbussche

  • Fernando Perez +

  • Jev Kuznetsov +

  • Joon Ro

  • Ralph Bean +

  • Wes McKinney

  • Wouter Overmeire