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Commits on May 8, 2014

• ENH: use size instead of cythonized count for fallback cases

  cpcloud

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Commits on May 5, 2014

• CLN: EAFP for count

  cpcloud

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• BUG: numeric_only must be False for count

  cpcloud

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• VB: add a vbench for groupby count

  cpcloud

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Commits on Apr 30, 2014

• BLD: fix failing vbench cases

  immerrr

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Commits on Mar 7, 2014

• TST add vbench for groupby nth

  hayd

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Commits on Feb 16, 2014

• checkin of percentage rank

  MichaelWS

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Commits on Aug 16, 2013

• CLN: rebase to 0.12

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  jreback

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Commits on Aug 7, 2013

• CLN/BUG: Revert 2/3 compat changes to vb_suite

  jtratner

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Commits on Jul 29, 2013

• CLN: pandas.util.compat --> pandas.compat

  jtratner

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• CLN/ENH: Merge compat with py3compat and six

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  jtratner

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• CLN/ENH: Add list versions of iterator methods.

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  jtratner

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• CLN: Newer syntax, unicode, iterator range, zip, etc

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  jtratner

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Commits on Apr 2, 2013

• VB: cut down worst runtime offenders in vb suite

  

  y-p

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Commits on Mar 25, 2013

• PERF: added vb_suite test for groupby_transform

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  jreback

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Commits on Feb 8, 2013

• ENH: allow propgation and coexistance of numeric dtypes (closes GH #622)

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  jreback

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Commits on Jan 19, 2013

• BUG: boolean groupby performance issue. close #2692

  wesm

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Commits on Jan 3, 2013

• Using autopep8 (https://github.com/hhatto/autopep8) on all py files.

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  hayd

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Commits on Dec 11, 2012

• ENH: improve value_counts performance on non-integer data. close #2480

  wesm

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Commits on Dec 5, 2012

• ENH: reduce groupby.apply overhead by internal DataFrame manipulation. close #535

  wesm

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Commits on Dec 3, 2012

• ENH: more refactoring. add consolidation checks to speed up concatenation

  wesm

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• ENH: start working toward refactor for fast apply

  wesm

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Commits on Jul 21, 2012

• ENH: hack to not compress single group keys, accelerate single-key and Categorical groupby operations

  wesm

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Commits on Jul 12, 2012

• ENH: Cython group_median method close #1358

  wesm

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Commits on May 13, 2012

• ENH: reimplment groupby_indices using better algorithmic tricks, associated vbenchmark. close #609

  wesm

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Commits on May 12, 2012

• ENH: add Cython nth/last functions, vbenchmarks. close #1043

  wesm

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• ENH: handle dict return values and vbench, close #823

  wesm

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Commits on May 8, 2012

• ENH: unstack multiple columns in one shot to eliminate empty columns in pivot table operations, close #1181

  wesm

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Commits on Mar 4, 2012

• ENH: use khash for integer Series.value_counts, move to algorithms.py, vbenchmarks GH #861

  wesm

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• TST: don't cache groups, GH #860

  wesm

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• TST: better vbench for #860

  wesm

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• ENH: don't use self.groups in groupby.size(), GH #860

  wesm

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Commits on Feb 18, 2012

• ENH: refactor groupings into GroupInfo class to share caches, resolve #775

  wesm

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Commits on Feb 16, 2012

• BUG: handle list of Series properly, close #792

  wesm

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Commits on Feb 12, 2012

• TST: vbench for #775

  wesm

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