DEPR: deprecate pandas.api.types.is_sequence (pandas-dev#16189)

xref pandas-dev#16042

Author: jreback

doc/source/api.rst

@@ -1969,15 +1969,14 @@ Dtype introspection
 
 Iterable introspection
 
+.. autosummary::
+   :toctree: generated/
+
     api.types.is_dict_like
     api.types.is_file_like
     api.types.is_list_like
     api.types.is_named_tuple
     api.types.is_iterator
-    api.types.is_sequence
-
-.. autosummary::
-   :toctree: generated/
 
 Scalar introspection
 

doc/source/whatsnew/v0.20.0.txt

@@ -1521,7 +1521,7 @@ Other Deprecations
   * ``pd.match()``, is removed.
   * ``pd.groupby()``, replaced by using the ``.groupby()`` method directly on a ``Series/DataFrame``
   * ``pd.get_store()``, replaced by a direct call to ``pd.HDFStore(...)``
-- ``is_any_int_dtype`` and ``is_floating_dtype`` are deprecated from ``pandas.api.types`` (:issue:`16042`)
+- ``is_any_int_dtype``, ``is_floating_dtype``, and ``is_sequence`` are deprecated from ``pandas.api.types`` (:issue:`16042`)
 
 .. _whatsnew_0200.prior_deprecations:
 

pandas/core/dtypes/api.py

@@ -57,14 +57,13 @@
                      is_file_like,
                      is_list_like,
                      is_hashable,
-                     is_named_tuple,
-                     is_sequence)
+                     is_named_tuple)
 
 
 # deprecated
 m = sys.modules['pandas.core.dtypes.api']
 
-for t in ['is_any_int_dtype', 'is_floating_dtype']:
+for t in ['is_any_int_dtype', 'is_floating_dtype', 'is_sequence']:
 
     def outer(t=t):
 

pandas/tests/api/test_types.py

@@ -31,9 +31,9 @@ class TestTypes(Base, tm.TestCase):
                'is_re', 'is_re_compilable',
                'is_dict_like', 'is_iterator', 'is_file_like',
                'is_list_like', 'is_hashable',
-               'is_named_tuple', 'is_sequence',
+               'is_named_tuple',
                'pandas_dtype', 'union_categoricals', 'infer_dtype']
-    deprecated = ['is_any_int_dtype', 'is_floating_dtype']
+    deprecated = ['is_any_int_dtype', 'is_floating_dtype', 'is_sequence']
     dtypes = ['CategoricalDtype', 'DatetimeTZDtype',
               'PeriodDtype', 'IntervalDtype']
 
@@ -90,7 +90,7 @@ def test_removed_from_core_common(self):
 
     def test_deprecated_from_api_types(self):
 
-        for t in ['is_any_int_dtype', 'is_floating_dtype']:
+        for t in self.deprecated:
             with tm.assert_produces_warning(FutureWarning,
                                             check_stacklevel=False):
                 getattr(types, t)(1)