Merged revisions 76871-76872,77093-77095,77097-77101 via svnmerge from

svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r76871 | benjamin.peterson | 2009-12-17 20:49:21 -0600 (Thu, 17 Dec 2009) | 1 line

  handle unencodable diffs gracefully #5093
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  r76872 | benjamin.peterson | 2009-12-17 20:51:37 -0600 (Thu, 17 Dec 2009) | 1 line

  fix emacs header
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  r77093 | benjamin.peterson | 2009-12-28 14:43:32 -0600 (Mon, 28 Dec 2009) | 7 lines

  replace callable(x) with isinstance(x, collections.Callable) #7006

  This is a more accurate translation than hasattr(x, '__call__') which failed in
  the case that somebody had put __call__ in the instance dictionary.

  Patch mostly by Joe Amenta.
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  r77094 | benjamin.peterson | 2009-12-28 14:45:13 -0600 (Mon, 28 Dec 2009) | 2 lines

  deuglify imports
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  r77095 | benjamin.peterson | 2009-12-28 14:49:23 -0600 (Mon, 28 Dec 2009) | 1 line

  remove unused flag
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  r77097 | benjamin.peterson | 2009-12-28 16:12:13 -0600 (Mon, 28 Dec 2009) | 2 lines

  clean up imports and whitespace
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  r77098 | benjamin.peterson | 2009-12-28 16:43:35 -0600 (Mon, 28 Dec 2009) | 1 line

  *** empty log message ***
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  r77099 | benjamin.peterson | 2009-12-28 16:45:10 -0600 (Mon, 28 Dec 2009) | 1 line

  revert unintended change
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  r77100 | benjamin.peterson | 2009-12-28 16:53:21 -0600 (Mon, 28 Dec 2009) | 1 line

  revert unintended changes
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  r77101 | benjamin.peterson | 2009-12-28 17:46:02 -0600 (Mon, 28 Dec 2009) | 1 line

  normalize whitespace
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Lib/lib2to3/tests/test_fixers.py

@@ -2725,16 +2725,79 @@ class Test_callable(FixerTestCase):
 
     def test_prefix_preservation(self):
         b = """callable(    x)"""
-        a = """hasattr(    x, '__call__')"""
+        a = """import collections\nisinstance(    x, collections.Callable)"""
         self.check(b, a)
 
         b = """if     callable(x): pass"""
-        a = """if     hasattr(x, '__call__'): pass"""
+        a = """import collections
+if     isinstance(x, collections.Callable): pass"""
         self.check(b, a)
 
     def test_callable_call(self):
         b = """callable(x)"""
-        a = """hasattr(x, '__call__')"""
+        a = """import collections\nisinstance(x, collections.Callable)"""
+        self.check(b, a)
+
+    def test_global_import(self):
+        b = """
+def spam(foo):
+    callable(foo)"""[1:]
+        a = """
+import collections
+def spam(foo):
+    isinstance(foo, collections.Callable)"""[1:]
+        self.check(b, a)
+
+        b = """
+import collections
+def spam(foo):
+    callable(foo)"""[1:]
+        # same output if it was already imported
+        self.check(b, a)
+
+        b = """
+from collections import *
+def spam(foo):
+    callable(foo)"""[1:]
+        a = """
+from collections import *
+import collections
+def spam(foo):
+    isinstance(foo, collections.Callable)"""[1:]
+        self.check(b, a)
+
+        b = """
+do_stuff()
+do_some_other_stuff()
+assert callable(do_stuff)"""[1:]
+        a = """
+import collections
+do_stuff()
+do_some_other_stuff()
+assert isinstance(do_stuff, collections.Callable)"""[1:]
+        self.check(b, a)
+
+        b = """
+if isinstance(do_stuff, Callable):
+    assert callable(do_stuff)
+    do_stuff(do_stuff)
+    if not callable(do_stuff):
+        exit(1)
+    else:
+        assert callable(do_stuff)
+else:
+    assert not callable(do_stuff)"""[1:]
+        a = """
+import collections
+if isinstance(do_stuff, Callable):
+    assert isinstance(do_stuff, collections.Callable)
+    do_stuff(do_stuff)
+    if not isinstance(do_stuff, collections.Callable):
+        exit(1)
+    else:
+        assert isinstance(do_stuff, collections.Callable)
+else:
+    assert not isinstance(do_stuff, collections.Callable)"""[1:]
         self.check(b, a)
 
     def test_callable_should_not_change(self):