Move core.config to _config.config (#25793)

Author: jbrockmendel

pandas/__init__.py

@@ -36,6 +36,9 @@
 
 from datetime import datetime
 
+from pandas._config import (get_option, set_option, reset_option,
+                            describe_option, option_context, options)
+
 # let init-time option registration happen
 import pandas.core.config_init
 

pandas/_config/__init__.py

@@ -2,3 +2,9 @@
 pandas._config is considered explicitly upstream of everything else in pandas,
 should have no intra-pandas dependencies.
 """
+__all__ = ["config", "get_option", "set_option", "reset_option",
+           "describe_option", "option_context", "options"]
+from pandas._config import config
+from pandas._config.config import (
+    describe_option, get_option, option_context, options, reset_option,
+    set_option)

pandas/core/config.py renamed to pandas/_config/config.py

@@ -695,7 +695,7 @@ def config_prefix(prefix):
 
     Example:
 
-    import pandas.core.config as cf
+    import pandas._config.config as cf
     with cf.config_prefix("display.font"):
         cf.register_option("color", "red")
         cf.register_option("size", " 5 pt")

pandas/_libs/tslibs/parsing.pyx

@@ -30,6 +30,8 @@ from dateutil.relativedelta import relativedelta
 from dateutil.parser import DEFAULTPARSER
 from dateutil.parser import parse as du_parse
 
+from pandas._config import get_option
+
 from pandas._libs.tslibs.ccalendar import MONTH_NUMBERS
 from pandas._libs.tslibs.nattype import nat_strings, NaT
 
@@ -51,20 +53,6 @@ cdef:
 
 # ----------------------------------------------------------------------
 
-_get_option = None
-
-
-def get_option(param):
-    """ Defer import of get_option to break an import cycle that caused
-    significant performance degradation in Period construction. See
-    GH#24118 for details
-    """
-    global _get_option
-    if _get_option is None:
-        from pandas.core.config import get_option
-        _get_option = get_option
-    return _get_option(param)
-
 
 def parse_datetime_string(date_string, freq=None, dayfirst=False,
                           yearfirst=False, **kwargs):

pandas/core/api.py

@@ -48,9 +48,6 @@
 from pandas.core.tools.datetimes import to_datetime
 from pandas.core.tools.timedeltas import to_timedelta
 
-from pandas.core.config import (get_option, set_option, reset_option,
-                                describe_option, option_context, options)
-
 
 # Deprecation: xref gh-16747
 class TimeGrouper(object):

pandas/core/arrays/categorical.py

@@ -5,6 +5,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas._libs import algos as libalgos, lib
 import pandas.compat as compat
 from pandas.compat import lzip
@@ -32,7 +34,6 @@
 from pandas.core.algorithms import factorize, take, take_1d, unique1d
 from pandas.core.base import NoNewAttributesMixin, PandasObject, _shared_docs
 import pandas.core.common as com
-from pandas.core.config import get_option
 from pandas.core.missing import interpolate_2d
 from pandas.core.sorting import nargsort
 

pandas/core/arrays/interval.py

@@ -3,6 +3,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas._libs.interval import (
     Interval, IntervalMixin, intervals_to_interval_bounds)
 from pandas.compat import add_metaclass
@@ -24,7 +26,6 @@
     ExtensionArray, _extension_array_shared_docs)
 from pandas.core.arrays.categorical import Categorical
 import pandas.core.common as com
-from pandas.core.config import get_option
 from pandas.core.indexes.base import Index, ensure_index
 
 _VALID_CLOSED = {'left', 'right', 'both', 'neither'}

pandas/core/base.py

@@ -66,7 +66,7 @@ def __bytes__(self):
         Invoked by bytes(obj) in py3 only.
         Yields a bytestring in both py2/py3.
         """
-        from pandas.core.config import get_option
+        from pandas._config import get_option
 
         encoding = get_option("display.encoding")
         return self.__unicode__().encode(encoding, 'replace')

pandas/core/computation/expressions.py

@@ -10,11 +10,12 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas.core.dtypes.generic import ABCDataFrame
 
 import pandas.core.common as com
 from pandas.core.computation.check import _NUMEXPR_INSTALLED
-from pandas.core.config import get_option
 
 if _NUMEXPR_INSTALLED:
     import numexpr as ne

pandas/core/config_init.py

@@ -9,8 +9,8 @@
 module is imported, register them here rather then in the module.
 
 """
-import pandas.core.config as cf
-from pandas.core.config import (
+import pandas._config.config as cf
+from pandas._config.config import (
     is_bool, is_callable, is_instance_factory, is_int, is_one_of_factory,
     is_text)
 

pandas/core/dtypes/dtypes.py

@@ -138,7 +138,7 @@ def __bytes__(self):
         Invoked by bytes(obj) in py3 only.
         Yields a bytestring in both py2/py3.
         """
-        from pandas.core.config import get_option
+        from pandas._config import get_option
 
         encoding = get_option("display.encoding")
         return self.__unicode__().encode(encoding, 'replace')

pandas/core/dtypes/missing.py

@@ -172,7 +172,7 @@ def _use_inf_as_na(key):
     * http://stackoverflow.com/questions/4859217/
       programmatically-creating-variables-in-python/4859312#4859312
     """
-    from pandas.core.config import get_option
+    from pandas._config import get_option
     flag = get_option(key)
     if flag:
         globals()['_isna'] = _isna_old

pandas/core/frame.py

@@ -24,6 +24,8 @@
 import numpy as np
 import numpy.ma as ma
 
+from pandas._config import get_option
+
 from pandas._libs import lib, algos as libalgos
 
 from pandas.util._decorators import (Appender, Substitution,
@@ -84,7 +86,6 @@
 from pandas.core.arrays.datetimelike import (
     DatetimeLikeArrayMixin as DatetimeLikeArray
 )
-from pandas.core.config import get_option
 from pandas.core.generic import NDFrame, _shared_docs
 from pandas.core.index import (Index, MultiIndex, ensure_index,
                                ensure_index_from_sequences)

pandas/core/generic.py

@@ -11,6 +11,8 @@
 
 import numpy as np
 
+from pandas._config import config
+
 from pandas._libs import Timestamp, iNaT, properties
 import pandas.compat as compat
 from pandas.compat import (
@@ -34,7 +36,7 @@
 from pandas.core.dtypes.missing import isna, notna
 
 import pandas as pd
-from pandas.core import config, missing, nanops
+from pandas.core import missing, nanops
 import pandas.core.algorithms as algos
 from pandas.core.base import PandasObject, SelectionMixin
 import pandas.core.common as com

pandas/core/groupby/groupby.py

@@ -17,6 +17,8 @@ class providing the base-class of operations.
 
 import numpy as np
 
+from pandas._config.config import option_context
+
 from pandas._libs import Timestamp, groupby as libgroupby
 import pandas.compat as compat
 from pandas.compat import set_function_name
@@ -37,7 +39,6 @@ class providing the base-class of operations.
 from pandas.core.base import (
     DataError, GroupByError, PandasObject, SelectionMixin, SpecificationError)
 import pandas.core.common as com
-from pandas.core.config import option_context
 from pandas.core.frame import DataFrame
 from pandas.core.generic import NDFrame
 from pandas.core.groupby import base

pandas/core/indexes/category.py

@@ -3,6 +3,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas._libs import index as libindex
 import pandas.compat as compat
 from pandas.compat.numpy import function as nv
@@ -19,7 +21,6 @@
 from pandas.core.algorithms import take_1d
 from pandas.core.arrays.categorical import Categorical, contains
 import pandas.core.common as com
-from pandas.core.config import get_option
 import pandas.core.indexes.base as ibase
 from pandas.core.indexes.base import Index, _index_shared_docs
 import pandas.core.missing as missing

pandas/core/indexes/interval.py

@@ -4,6 +4,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas._libs import Timedelta, Timestamp
 from pandas._libs.interval import Interval, IntervalMixin, IntervalTree
 from pandas.compat import add_metaclass
@@ -21,7 +23,6 @@
 
 from pandas.core.arrays.interval import IntervalArray, _interval_shared_docs
 import pandas.core.common as com
-from pandas.core.config import get_option
 import pandas.core.indexes.base as ibase
 from pandas.core.indexes.base import (
     Index, _index_shared_docs, default_pprint, ensure_index)

pandas/core/indexes/multi.py

@@ -6,6 +6,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas._libs import (
     Timestamp, algos as libalgos, index as libindex, lib, tslibs)
 import pandas.compat as compat
@@ -24,7 +26,6 @@
 
 import pandas.core.algorithms as algos
 import pandas.core.common as com
-from pandas.core.config import get_option
 import pandas.core.indexes.base as ibase
 from pandas.core.indexes.base import (
     Index, InvalidIndexError, _index_shared_docs, ensure_index)

pandas/core/nanops.py

@@ -6,6 +6,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas._libs import iNaT, lib, tslibs
 import pandas.compat as compat
 
@@ -19,7 +21,6 @@
 from pandas.core.dtypes.missing import isna, na_value_for_dtype, notna
 
 import pandas.core.common as com
-from pandas.core.config import get_option
 
 _BOTTLENECK_INSTALLED = False
 _MIN_BOTTLENECK_VERSION = '1.0.0'

pandas/core/series.py

@@ -9,6 +9,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas._libs import iNaT, index as libindex, lib, tslibs
 import pandas.compat as compat
 from pandas.compat import PY36, StringIO
@@ -33,7 +35,6 @@
 from pandas.core.arrays.categorical import Categorical, CategoricalAccessor
 from pandas.core.arrays.sparse import SparseAccessor
 import pandas.core.common as com
-from pandas.core.config import get_option
 from pandas.core.index import (
     Float64Index, Index, InvalidIndexError, MultiIndex, ensure_index)
 from pandas.core.indexes.accessors import CombinedDatetimelikeProperties

pandas/io/excel/_base.py

@@ -5,6 +5,8 @@
 from textwrap import fill
 import warnings
 
+from pandas._config import config
+
 import pandas.compat as compat
 from pandas.compat import add_metaclass, string_types
 from pandas.errors import EmptyDataError
@@ -13,7 +15,6 @@
 from pandas.core.dtypes.common import (
     is_bool, is_float, is_integer, is_list_like)
 
-from pandas.core import config
 from pandas.core.frame import DataFrame
 
 from pandas.io.common import _NA_VALUES, _stringify_path, _validate_header_arg

pandas/io/formats/console.py

@@ -69,7 +69,7 @@ def get_console_size():
         if in_ipython_frontend():
             # sane defaults for interactive non-shell terminal
             # match default for width,height in config_init
-            from pandas.core.config import get_default_val
+            from pandas._config.config import get_default_val
             terminal_width = get_default_val('display.width')
             terminal_height = get_default_val('display.max_rows')
         else:

pandas/io/formats/format.py

@@ -10,6 +10,8 @@
 
 import numpy as np
 
+from pandas._config.config import get_option, set_option
+
 from pandas._libs import lib
 from pandas._libs.tslib import format_array_from_datetime
 from pandas._libs.tslibs import NaT, Timedelta, Timestamp, iNaT
@@ -27,7 +29,6 @@
 from pandas import compat
 from pandas.core.base import PandasObject
 import pandas.core.common as com
-from pandas.core.config import get_option, set_option
 from pandas.core.index import Index, ensure_index
 from pandas.core.indexes.datetimes import DatetimeIndex
 

pandas/io/formats/html.py

@@ -8,12 +8,13 @@
 from collections import OrderedDict
 from textwrap import dedent
 
+from pandas._config import get_option
+
 from pandas.compat import lzip, unichr
 
 from pandas.core.dtypes.generic import ABCMultiIndex
 
 from pandas import compat, option_context
-from pandas.core.config import get_option
 
 from pandas.io.common import _is_url
 from pandas.io.formats.format import TableFormatter, get_level_lengths

pandas/io/formats/printing.py

@@ -4,10 +4,11 @@
 
 import sys
 
+from pandas._config import get_option
+
 from pandas.core.dtypes.inference import is_sequence
 
 from pandas import compat
-from pandas.core.config import get_option
 
 
 def adjoin(space, *lists, **kwargs):

pandas/io/formats/style.py

@@ -12,6 +12,8 @@
 
 import numpy as np
 
+from pandas._config import get_option
+
 from pandas.util._decorators import Appender
 
 from pandas.core.dtypes.common import is_float, is_string_like
@@ -20,7 +22,6 @@
 import pandas as pd
 from pandas.api.types import is_dict_like, is_list_like
 import pandas.core.common as com
-from pandas.core.config import get_option
 from pandas.core.generic import _shared_docs
 from pandas.core.indexing import _maybe_numeric_slice, _non_reducing_slice