From 01734edca2aed417577e8e521fbba0ad06b28e38 Mon Sep 17 00:00:00 2001
From: Hong Minhee <minhee@dahlia.kr>
Date: Sat, 13 Apr 2013 07:03:25 +0900
Subject: [PATCH] Use collections.Callable ABC instead of callable() predicate

---
 alembic/ddl/impl.py  | 4 +++-
 alembic/migration.py | 5 +++--
 alembic/util.py      | 3 ++-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/alembic/ddl/impl.py b/alembic/ddl/impl.py
index ab67e0c7..fbcec939 100644
--- a/alembic/ddl/impl.py
+++ b/alembic/ddl/impl.py
@@ -2,6 +2,7 @@ try:
     import builtins
 except ImportError:
     import __builtin__ as builtins
+import collections
 
 from sqlalchemy.sql.expression import _BindParamClause
 from sqlalchemy.ext.compiler import compiles
@@ -57,7 +58,8 @@ class DefaultImpl(with_metaclass(ImplMeta)):
     def static_output(self, text):
         text_ = text_type(text + '\n\n')
         self.output_buffer.write(text_)
-        if callable(getattr(self.output_buffer, 'flush', None)):
+        if isinstance(getattr(self.output_buffer, 'flush', None),
+                collections.Callable):
             self.output_buffer.flush()
 
     @property
diff --git a/alembic/migration.py b/alembic/migration.py
index bf8e9380..fa28053b 100644
--- a/alembic/migration.py
+++ b/alembic/migration.py
@@ -1,3 +1,4 @@
+import collections
 import io
 import logging
 import sys
@@ -274,7 +275,7 @@ class MigrationContext(object):
         if self._user_compare_type is False:
             return False
 
-        if callable(self._user_compare_type):
+        if isinstance(self._user_compare_type, collections.Callable):
             user_value = self._user_compare_type(
                 self,
                 inspector_column,
@@ -296,7 +297,7 @@ class MigrationContext(object):
         if self._user_compare_server_default is False:
             return False
 
-        if callable(self._user_compare_server_default):
+        if isinstance(self._user_compare_server_default, collections.Callable):
             user_value = self._user_compare_server_default(
                     self,
                     inspector_column,
diff --git a/alembic/util.py b/alembic/util.py
index 6111d202..4f223f76 100644
--- a/alembic/util.py
+++ b/alembic/util.py
@@ -4,6 +4,7 @@ try:
     import builtins
 except ImportError:
     import __builtin__ as builtins
+import collections
 import sys
 import os
 import textwrap
@@ -129,7 +130,7 @@ def create_module_class_proxy(cls, globals_, locals_):
 
     for methname in dir(cls):
         if not methname.startswith('_'):
-            if callable(getattr(cls, methname)):
+            if isinstance(getattr(cls, methname), collections.Callable):
                 locals_[methname] = _create_op_proxy(methname)
             else:
                 attr_names.add(methname)
-- 
2.47.3