From de2e5d1081ddd3724b63f59f0d2b5e81482d2f59 Mon Sep 17 00:00:00 2001
From: gfyoung <gfyoung17@gmail.com>
Date: Thu, 11 Jan 2018 02:09:13 -0800
Subject: [PATCH] CLN: Remove pandas.util | tools/hashing.py

Deprecated in v0.20.0

xref gh-16223
---
 doc/source/whatsnew/v0.23.0.txt   |  1 +
 pandas/tests/util/test_hashing.py | 15 ---------------
 pandas/tools/hashing.py           | 18 ------------------
 pandas/util/hashing.py            | 18 ------------------
 4 files changed, 1 insertion(+), 51 deletions(-)
 delete mode 100644 pandas/tools/hashing.py
 delete mode 100644 pandas/util/hashing.py

diff --git a/doc/source/whatsnew/v0.23.0.txt b/doc/source/whatsnew/v0.23.0.txt
index 92eeed89ada2a..dc305f36f32ec 100644
--- a/doc/source/whatsnew/v0.23.0.txt
+++ b/doc/source/whatsnew/v0.23.0.txt
@@ -317,6 +317,7 @@ Removal of prior version deprecations/changes
 - The options ``display.line_with`` and ``display.height`` are removed in favor of ``display.width`` and ``display.max_rows`` respectively (:issue:`4391`, :issue:`19107`)
 - The ``labels`` attribute of the ``Categorical`` class has been removed in favor of :attribute:`Categorical.codes` (:issue:`7768`)
 - The ``flavor`` parameter have been removed from func:`to_sql` method (:issue:`13611`)
+- The modules `pandas.tools.hashing` and `pandas.util.hashing` have been removed (:issue:`16223`)
 
 .. _whatsnew_0230.performance:
 
diff --git a/pandas/tests/util/test_hashing.py b/pandas/tests/util/test_hashing.py
index 289592939e3da..fe8d75539879e 100644
--- a/pandas/tests/util/test_hashing.py
+++ b/pandas/tests/util/test_hashing.py
@@ -290,18 +290,3 @@ def test_hash_collisions(self):
         result = hash_array(np.asarray(L, dtype=object), 'utf8')
         tm.assert_numpy_array_equal(
             result, np.concatenate([expected1, expected2], axis=0))
-
-
-def test_deprecation():
-
-    with tm.assert_produces_warning(DeprecationWarning,
-                                    check_stacklevel=False):
-        from pandas.tools.hashing import hash_pandas_object
-        obj = Series(list('abc'))
-        hash_pandas_object(obj, hash_key='9876543210123456')
-
-    with tm.assert_produces_warning(DeprecationWarning,
-                                    check_stacklevel=False):
-        from pandas.tools.hashing import hash_array
-        obj = np.array([1, 2, 3])
-        hash_array(obj, hash_key='9876543210123456')
diff --git a/pandas/tools/hashing.py b/pandas/tools/hashing.py
deleted file mode 100644
index ba38710b607af..0000000000000
--- a/pandas/tools/hashing.py
+++ /dev/null
@@ -1,18 +0,0 @@
-import warnings
-import sys
-
-m = sys.modules['pandas.tools.hashing']
-for t in ['hash_pandas_object', 'hash_array']:
-
-    def outer(t=t):
-
-        def wrapper(*args, **kwargs):
-            from pandas import util
-            warnings.warn("pandas.tools.hashing is deprecated and will be "
-                          "removed in a future version, import "
-                          "from pandas.util",
-                          DeprecationWarning, stacklevel=3)
-            return getattr(util, t)(*args, **kwargs)
-        return wrapper
-
-    setattr(m, t, outer(t))
diff --git a/pandas/util/hashing.py b/pandas/util/hashing.py
deleted file mode 100644
index f97a7ac507407..0000000000000
--- a/pandas/util/hashing.py
+++ /dev/null
@@ -1,18 +0,0 @@
-import warnings
-import sys
-
-m = sys.modules['pandas.util.hashing']
-for t in ['hash_pandas_object', 'hash_array']:
-
-    def outer(t=t):
-
-        def wrapper(*args, **kwargs):
-            from pandas import util
-            warnings.warn("pandas.util.hashing is deprecated and will be "
-                          "removed in a future version, import "
-                          "from pandas.util",
-                          DeprecationWarning, stacklevel=3)
-            return getattr(util, t)(*args, **kwargs)
-        return wrapper
-
-    setattr(m, t, outer(t))