CLN: remove unneeded inheritance from base object

Author: topper-123

doc/source/development/contributing.rst

@@ -773,7 +773,7 @@ Transitioning to ``pytest``
 
 .. code-block:: python
 
-    class TestReallyCoolFeature(object):
+    class TestReallyCoolFeature:
         pass
 
 Going forward, we are moving to a more *functional* style using the `pytest <http://docs.pytest.org/en/latest/>`__ framework, which offers a richer testing

doc/source/development/extending.rst

@@ -26,7 +26,7 @@ decorate a class, providing the name of attribute to add. The class's
 .. code-block:: python
 
    @pd.api.extensions.register_dataframe_accessor("geo")
-   class GeoAccessor(object):
+   class GeoAccessor:
        def __init__(self, pandas_obj):
            self._validate(pandas_obj)
            self._obj = pandas_obj

pandas/_config/config.py

@@ -177,7 +177,7 @@ def get_default_val(pat):
     return _get_registered_option(key).defval
 
 
-class DictWrapper(object):
+class DictWrapper:
     """ provide attribute-style access to a nested dict"""
 
     def __init__(self, d, prefix=""):
@@ -222,7 +222,7 @@ def __dir__(self):
 # of options, and option descriptions.
 
 
-class CallableDynamicDoc(object):
+class CallableDynamicDoc:
 
     def __init__(self, func, doc_tmpl):
         self.__doc_tmpl__ = doc_tmpl
@@ -379,7 +379,7 @@ def __doc__(self):
 # Functions for use by pandas developers, in addition to User - api
 
 
-class option_context(object):
+class option_context:
     """
     Context manager to temporarily set options in the `with` statement context.
 

pandas/_version.py

@@ -26,7 +26,7 @@ def get_keywords():
     return keywords
 
 
-class VersioneerConfig(object):
+class VersioneerConfig:
     pass
 
 

pandas/compat/numpy/function.py

@@ -27,7 +27,7 @@
     validate_args, validate_args_and_kwargs, validate_kwargs)
 
 
-class CompatValidator(object):
+class CompatValidator:
 
     def __init__(self, defaults, fname=None, method=None,
                  max_fname_arg_count=None):

pandas/core/accessor.py

@@ -10,7 +10,7 @@
 from pandas.util._decorators import Appender
 
 
-class DirNamesMixin(object):
+class DirNamesMixin:
     _accessors = frozenset()
     _deprecations = frozenset(
         ['asobject', 'base', 'data', 'flags', 'itemsize', 'strides'])
@@ -44,7 +44,7 @@ def __dir__(self):
         return sorted(rv)
 
 
-class PandasDelegate(object):
+class PandasDelegate:
     """
     An abstract base class for delegating methods/properties.
     """
@@ -151,7 +151,7 @@ def add_delegate_accessors(cls):
 # 1. We don't need to catch and re-raise AttributeErrors as RuntimeErrors
 # 2. We use a UserWarning instead of a custom Warning
 
-class CachedAccessor(object):
+class CachedAccessor:
     """
     Custom property-like object (descriptor) for caching accessors.
 
@@ -235,7 +235,7 @@ def __init__(self, pandas_object):  # noqa: E999
     import pandas as pd
 
     @pd.api.extensions.register_dataframe_accessor("geo")
-    class GeoAccessor(object):
+    class GeoAccessor:
         def __init__(self, pandas_obj):
             self._obj = pandas_obj
 

pandas/core/algorithms.py

@@ -1047,7 +1047,7 @@ def _get_score(at):
 # select n        #
 # --------------- #
 
-class SelectN(object):
+class SelectN:
 
     def __init__(self, obj, n, keep):
         self.obj = obj

pandas/core/api.py

@@ -48,7 +48,7 @@
 
 
 # Deprecation: xref gh-16747
-class TimeGrouper(object):
+class TimeGrouper:
 
     def __new__(cls, *args, **kwargs):
         from pandas.core.resample import TimeGrouper

pandas/core/apply.py

@@ -31,7 +31,7 @@ def frame_apply(obj, func, axis=0, broadcast=None,
                  args=args, kwds=kwds)
 
 
-class FrameApply(object):
+class FrameApply:
 
     def __init__(self, obj, func, broadcast, raw, reduce, result_type,
                  ignore_failures, args, kwds):

pandas/core/arrays/base.py

@@ -29,7 +29,7 @@
 _extension_array_shared_docs = dict()
 
 
-class ExtensionArray(object):
+class ExtensionArray:
     """
     Abstract base class for custom 1-D array types.
 
@@ -964,7 +964,7 @@ def _reduce(self, name, skipna=True, **kwargs):
             name=name, dtype=self.dtype))
 
 
-class ExtensionOpsMixin(object):
+class ExtensionOpsMixin:
     """
     A base class for linking the operators to their dunder names.
 

pandas/core/arrays/datetimelike.py

@@ -39,7 +39,7 @@
 from .base import ExtensionArray, ExtensionOpsMixin
 
 
-class AttributesMixin(object):
+class AttributesMixin:
 
     @property
     def _attributes(self):
@@ -135,7 +135,7 @@ def _check_compatible_with(
         raise AbstractMethodError(self)
 
 
-class DatelikeOps(object):
+class DatelikeOps:
     """
     Common ops for DatetimeIndex/PeriodIndex, but not TimedeltaIndex.
     """
@@ -181,7 +181,7 @@ def strftime(self, date_format):
         return Index(self._format_native_types(date_format=date_format))
 
 
-class TimelikeOps(object):
+class TimelikeOps:
     """
     Common ops for TimedeltaIndex/DatetimeIndex, but not PeriodIndex.
     """

pandas/core/base.py

@@ -32,7 +32,7 @@
                             unique='IndexOpsMixin', duplicated='IndexOpsMixin')
 
 
-class StringMixin(object):
+class StringMixin:
     """
     Implements string methods so long as object defines a `__unicode__` method.
     """
@@ -110,7 +110,7 @@ def __sizeof__(self):
         return super(PandasObject, self).__sizeof__()
 
 
-class NoNewAttributesMixin(object):
+class NoNewAttributesMixin:
     """Mixin which prevents adding new attributes.
 
     Prevents additional attributes via xxx.attribute = "something" after a
@@ -153,7 +153,7 @@ class SpecificationError(GroupByError):
     pass
 
 
-class SelectionMixin(object):
+class SelectionMixin:
     """
     mixin implementing the selection & aggregation interface on a group-like
     object sub-classes need to define: obj, exclusions
@@ -645,7 +645,7 @@ def _is_builtin_func(self, arg):
         return self._builtin_table.get(arg, arg)
 
 
-class IndexOpsMixin(object):
+class IndexOpsMixin:
     """ common ops mixin to support a unified interface / docs for Series /
     Index
     """

pandas/core/computation/engines.py

@@ -35,7 +35,7 @@ def _check_ne_builtin_clash(expr):
                                      .format(expr=expr, s=s))
 
 
-class AbstractEngine(object):
+class AbstractEngine:
 
     """Object serving as a base class for all engines."""
 

pandas/core/computation/ops.py

@@ -541,7 +541,7 @@ def __unicode__(self):
         return pprint_thing('{0}({1})'.format(self.op, ','.join(operands)))
 
 
-class FuncNode(object):
+class FuncNode:
     def __init__(self, name):
         from pandas.core.computation.check import (_NUMEXPR_INSTALLED,
                                                    _NUMEXPR_VERSION)

pandas/core/computation/pytables.py

@@ -572,7 +572,7 @@ def evaluate(self):
         return self.condition, self.filter
 
 
-class TermValue(object):
+class TermValue:
 
     """ hold a term value the we use to construct a condition/filter """
 

pandas/core/dtypes/base.py

@@ -8,7 +8,7 @@
 from pandas.core.dtypes.generic import ABCDataFrame, ABCIndexClass, ABCSeries
 
 
-class _DtypeOpsMixin(object):
+class _DtypeOpsMixin:
     # Not all of pandas' extension dtypes are compatibile with
     # the new ExtensionArray interface. This means PandasExtensionDtype
     # can't subclass ExtensionDtype yet, as is_extension_array_dtype would

pandas/core/dtypes/dtypes.py

@@ -39,7 +39,7 @@ def register_extension_dtype(cls):
     return cls
 
 
-class Registry(object):
+class Registry:
     """
     Registry for dtype inference
 

pandas/core/groupby/base.py

@@ -11,7 +11,7 @@
 from pandas.core.dtypes.common import is_list_like, is_scalar
 
 
-class GroupByMixin(object):
+class GroupByMixin:
     """
     Provide the groupby facilities to the mixed object.
     """

pandas/core/groupby/grouper.py

@@ -25,7 +25,7 @@
 from pandas.io.formats.printing import pprint_thing
 
 
-class Grouper(object):
+class Grouper:
     """
     A Grouper allows the user to specify a groupby instruction for a target
     object
@@ -204,7 +204,7 @@ def __repr__(self):
         return "{}({})".format(cls_name, attrs)
 
 
-class Grouping(object):
+class Grouping:
 
     """
     Holds the grouping information for a single key

pandas/core/groupby/ops.py

@@ -87,7 +87,7 @@ def generate_bins_generic(values, binner, closed):
     return bins
 
 
-class BaseGrouper(object):
+class BaseGrouper:
     """
     This is an internal Grouper class, which actually holds
     the generated groups
@@ -808,7 +808,7 @@ def _is_indexed_like(obj, axes):
 # Splitting / application
 
 
-class DataSplitter(object):
+class DataSplitter:
 
     def __init__(self, data, labels, ngroups, axis=0):
         self.data = data

pandas/core/indexing.py

@@ -35,7 +35,7 @@ def get_indexers_list():
 
 
 # the public IndexSlicerMaker
-class _IndexSlice(object):
+class _IndexSlice:
     """
     Create an object to more easily perform multi-index slicing
 

pandas/core/internals/blocks.py

@@ -1519,7 +1519,7 @@ def _replace_coerce(self, to_replace, value, inplace=True, regex=False,
         return self
 
 
-class NonConsolidatableMixIn(object):
+class NonConsolidatableMixIn:
     """ hold methods for the nonconsolidatable blocks """
     _can_consolidate = False
     _verify_integrity = False
@@ -2033,7 +2033,7 @@ def should_store(self, value):
         return is_integer_dtype(value) and value.dtype == self.dtype
 
 
-class DatetimeLikeBlockMixin(object):
+class DatetimeLikeBlockMixin:
     """Mixin class for DatetimeBlock, DatetimeTZBlock, and TimedeltaBlock."""
 
     @property

pandas/core/internals/concat.py

@@ -99,7 +99,7 @@ def get_mgr_concatenation_plan(mgr, indexers):
     return plan
 
 
-class JoinUnit(object):
+class JoinUnit:
 
     def __init__(self, block, shape, indexers=None):
         # Passing shape explicitly is required for cases when block is None.

pandas/core/nanops.py

@@ -54,7 +54,7 @@ def set_use_bottleneck(v=True):
 set_use_bottleneck(get_option('compute.use_bottleneck'))
 
 
-class disallow(object):
+class disallow:
 
     def __init__(self, *dtypes):
         super(disallow, self).__init__()
@@ -86,7 +86,7 @@ def _f(*args, **kwargs):
         return _f
 
 
-class bottleneck_switch(object):
+class bottleneck_switch:
 
     def __init__(self, **kwargs):
         self.kwargs = kwargs

pandas/core/reshape/concat.py

@@ -229,7 +229,7 @@ def concat(objs, axis=0, join='outer', join_axes=None, ignore_index=False,
     return op.get_result()
 
 
-class _Concatenator(object):
+class _Concatenator:
     """
     Orchestrates a concatenation operation for BlockManagers
     """

pandas/core/reshape/merge.py

@@ -469,7 +469,7 @@ def merge_asof(left, right, on=None,
 
 # TODO: transformations??
 # TODO: only copy DataFrames when modification necessary
-class _MergeOperation(object):
+class _MergeOperation:
     """
     Perform a database (SQL) merge operation between two DataFrame objects
     using either columns as keys or their row indexes

pandas/core/reshape/reshape.py

@@ -24,7 +24,7 @@
     get_group_index)
 
 
-class _Unstacker(object):
+class _Unstacker:
     """
     Helper class to unstack data / pivot with multi-level index
 

pandas/core/sorting.py

@@ -283,7 +283,7 @@ def nargsort(items, kind='quicksort', ascending=True, na_position='last'):
     return indexer
 
 
-class _KeyMapper(object):
+class _KeyMapper:
 
     """
     Ease my suffering. Map compressed group id -> key tuple

pandas/io/clipboard/clipboards.py

@@ -124,7 +124,7 @@ def paste_klipper():
 
 
 def init_no_clipboard():
-    class ClipboardUnavailable(object):
+    class ClipboardUnavailable:
 
         def __call__(self, *args, **kwargs):
             raise PyperclipException(EXCEPT_MSG)