CLN: Old helper functions (#22104)

pandas/core/reshape/util.py

@@ -3,16 +3,9 @@
 from pandas.core.dtypes.common import is_list_like
 
 from pandas.compat import reduce
-from pandas.core.index import Index
 from pandas.core import common as com
 
 
-def match(needles, haystack):
-    haystack = Index(haystack)
-    needles = Index(needles)
-    return haystack.get_indexer(needles)
-
-
 def cartesian_product(X):
     """
     Numpy version of itertools.product or pandas.compat.product.

pandas/core/tools/datetimes.py

@@ -1,5 +1,5 @@
 from functools import partial
-from datetime import datetime, timedelta, time
+from datetime import datetime, time
 from collections import MutableMapping
 
 import numpy as np
@@ -850,24 +850,3 @@ def _convert_listlike(arg, format):
         return _convert_listlike(arg, format)
 
     return _convert_listlike(np.array([arg]), format)[0]
-
-
-def format(dt):
-    """Returns date in YYYYMMDD format."""
-    return dt.strftime('%Y%m%d')
-
-
-OLE_TIME_ZERO = datetime(1899, 12, 30, 0, 0, 0)
-
-
-def ole2datetime(oledt):
-    """function for converting excel date to normal date format"""
-    val = float(oledt)
-
-    # Excel has a bug where it thinks the date 2/29/1900 exists
-    # we just reject any date before 3/1/1900.
-    if val < 61:
-        msg = "Value is outside of acceptable range: {value}".format(value=val)
-        raise ValueError(msg)
-
-    return OLE_TIME_ZERO + timedelta(days=val)

pandas/tests/io/test_sql.py

@@ -36,7 +36,6 @@
 from pandas import date_range, to_datetime, to_timedelta, Timestamp
 import pandas.compat as compat
 from pandas.compat import range, lrange, string_types, PY36
-from pandas.core.tools.datetimes import format as date_format
 
 import pandas.io.sql as sql
 from pandas.io.sql import read_sql_table, read_sql_query
@@ -2094,6 +2093,11 @@ def test_illegal_names(self):
 # -- Old tests from 0.13.1 (before refactor using sqlalchemy)
 
 
+def date_format(dt):
+    """Returns date in YYYYMMDD format."""
+    return dt.strftime('%Y%m%d')
+
+
 _formatters = {
     datetime: lambda dt: "'%s'" % date_format(dt),
     str: lambda x: "'%s'" % x,

pandas/tests/tseries/offsets/test_offsets.py

@@ -29,7 +29,6 @@
                                     QuarterEnd, BusinessMonthEnd, FY5253,
                                     Nano, Easter, FY5253Quarter,
                                     LastWeekOfMonth, Tick)
-from pandas.core.tools.datetimes import format, ole2datetime
 import pandas.tseries.offsets as offsets
 from pandas.io.pickle import read_pickle
 from pandas._libs.tslibs import timezones
@@ -45,19 +44,6 @@
 ####
 
 
-def test_format():
-    actual = format(datetime(2008, 1, 15))
-    assert actual == '20080115'
-
-
-def test_ole2datetime():
-    actual = ole2datetime(60000)
-    assert actual == datetime(2064, 4, 8)
-
-    with pytest.raises(ValueError):
-        ole2datetime(60)
-
-
 def test_to_m8():
     valb = datetime(2007, 10, 1)
     valu = _to_m8(valb)