various Period related name changes, release note

Author: blbradley

doc/source/whatsnew/v0.16.0.txt

@@ -208,6 +208,7 @@ Performance
 - Performance and memory usage improvements in ``merge`` when key space exceeds ``int64`` bounds (:issue:`9151`)
 - Performance improvements in multi-key ``groupby`` (:issue:`9429`)
 - Performance improvements in ``MultiIndex.sortlevel`` (:issue:`9445`)
+- Cythonized ``Period`` (:issue:`9440`)
 
 Bug Fixes
 ~~~~~~~~~

pandas/period.pyx renamed to pandas/src/period.pyx

@@ -36,7 +36,7 @@ cdef bint PY2 = version_info[0] == 2
 cdef int64_t NPY_NAT = util.get_nat()
 
 
-cdef extern from "period.h":
+cdef extern from "period_helper.h":
     ctypedef struct date_info:
         int64_t absdate
         double abstime

pandas/src/period.c renamed to pandas/src/period_helper.c

@@ -1,4 +1,4 @@
-#include "period.h"
+#include "period_helper.h"
 
 
 /*

pandas/src/period.h renamed to pandas/src/period_helper.h

@@ -7,7 +7,7 @@
 import pandas.util.testing as tm
 from pandas.compat import range, lrange, zip
 import pandas.lib as lib
-import pandas.period as period
+import pandas._period as period
 import pandas.algos as algos
 
 

pandas/tests/test_tseries.py

@@ -12,7 +12,7 @@
 import pandas.core.common as com
 import pandas.lib as lib
 import pandas.tslib as tslib
-import pandas.period as period
+import pandas._period as period
 from pandas.tslib import Timedelta
 
 class FreqGroup(object):

pandas/tseries/frequencies.py

@@ -28,7 +28,7 @@
 from pandas.lib import Timestamp
 import pandas.lib as lib
 import pandas.tslib as tslib
-import pandas.period as period
+import pandas._period as period
 import pandas.algos as _algos
 import pandas.index as _index
 

pandas/tseries/index.py

@@ -12,9 +12,9 @@
 from pandas.tseries.tools import parse_time_string
 import pandas.tseries.offsets as offsets
 
-from pandas.period import Period
-import pandas.period as period
-from pandas.period import (
+from pandas._period import Period
+import pandas._period as period
+from pandas._period import (
     get_period_field_arr,
     _validate_end_alias,
     _quarter_to_myear,

pandas/tseries/period.py

@@ -3,12 +3,12 @@
 import numpy as np
 
 from pandas import tslib
-from pandas import period
+import pandas._period as period
 import datetime
 
 from pandas.core.api import Timestamp, Series, Timedelta
 from pandas.tslib import get_timezone
-from pandas.period import period_asfreq, period_ordinal
+from pandas._period import period_asfreq, period_ordinal
 from pandas.tseries.index import date_range
 from pandas.tseries.frequencies import get_freq
 import pandas.tseries.offsets as offsets

pandas/tseries/tests/test_tslib.py

@@ -445,7 +445,7 @@ def pxd(name):
 
 tseries_depends = ['pandas/src/datetime/np_datetime.h',
                    'pandas/src/datetime/np_datetime_strings.h',
-                   'pandas/src/period.h']
+                   'pandas/src/period_helper.h']
 
 
 # some linux distros require it
@@ -461,24 +461,24 @@ def pxd(name):
            'depends': tseries_depends,
            'sources': ['pandas/src/datetime/np_datetime.c',
                        'pandas/src/datetime/np_datetime_strings.c',
-                       'pandas/src/period.c']},
-    period=dict(pyxfile='period',
-                depends=tseries_depends,
-                sources=['pandas/src/datetime/np_datetime.c',
+                       'pandas/src/period_helper.c']},
+    _period={'pyxfile': 'src/period',
+             'depends': tseries_depends,
+             'sources': ['pandas/src/datetime/np_datetime.c',
                          'pandas/src/datetime/np_datetime_strings.c',
-                         'pandas/src/period.c']),
+                         'pandas/src/period_helper.c']},
     index={'pyxfile': 'index',
            'sources': ['pandas/src/datetime/np_datetime.c',
                        'pandas/src/datetime/np_datetime_strings.c']},
     algos={'pyxfile': 'algos',
            'depends': [srcpath('generated', suffix='.pyx'),
                        srcpath('join', suffix='.pyx')]},
-    parser=dict(pyxfile='parser',
-                depends=['pandas/src/parser/tokenizer.h',
-                         'pandas/src/parser/io.h',
-                         'pandas/src/numpy_helper.h'],
-                sources=['pandas/src/parser/tokenizer.c',
-                         'pandas/src/parser/io.c'])
+    parser={'pyxfile': 'parser',
+            'depends': ['pandas/src/parser/tokenizer.h',
+                        'pandas/src/parser/io.h',
+                        'pandas/src/numpy_helper.h'],
+            'sources': ['pandas/src/parser/tokenizer.c',
+                        'pandas/src/parser/io.c']}
 )
 
 extensions = []