Merged revisions 76062 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

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  r76062 | benjamin.peterson | 2009-11-02 12:12:12 -0600 (Mon, 02 Nov 2009) | 70 lines

  Merged revisions 74359,75081,75088,75213,75278,75303,75427-75428,75734-75736,75865,76059-76061 via svnmerge from
  svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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    r74359 | benjamin.peterson | 2009-08-12 17:23:13 -0500 (Wed, 12 Aug 2009) | 1 line

    don't pass the deprecated print_function option
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    r75081 | benjamin.peterson | 2009-09-26 22:02:57 -0500 (Sat, 26 Sep 2009) | 1 line

    let 2to3 work with extended iterable unpacking
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    r75088 | benjamin.peterson | 2009-09-27 11:25:21 -0500 (Sun, 27 Sep 2009) | 1 line

    look on the type only for __call__
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    r75213 | benjamin.peterson | 2009-10-03 10:09:46 -0500 (Sat, 03 Oct 2009) | 5 lines

    revert 75212; it's not correct

    People can use isinstance(x, collections.Callable) if they expect objects with
    __call__ in their instance dictionaries.
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    r75278 | benjamin.peterson | 2009-10-07 16:25:56 -0500 (Wed, 07 Oct 2009) | 4 lines

    fix whitespace problems with fix_idioms #3563

    Patch by Joe Amenta.
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    r75303 | benjamin.peterson | 2009-10-09 16:59:11 -0500 (Fri, 09 Oct 2009) | 1 line

    port latin-1 and utf-8 cookie improvements
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    r75427 | benjamin.peterson | 2009-10-14 20:35:57 -0500 (Wed, 14 Oct 2009) | 1 line

    force floor division
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    r75428 | benjamin.peterson | 2009-10-14 20:39:21 -0500 (Wed, 14 Oct 2009) | 1 line

    silence -3 warnings about __hash__
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    r75734 | benjamin.peterson | 2009-10-26 16:25:53 -0500 (Mon, 26 Oct 2009) | 2 lines

    warn on map(None, ...) with more than 2 arguments #7203
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    r75735 | benjamin.peterson | 2009-10-26 16:28:25 -0500 (Mon, 26 Oct 2009) | 1 line

    remove unused result
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    r75736 | benjamin.peterson | 2009-10-26 16:29:02 -0500 (Mon, 26 Oct 2009) | 1 line

    using get() here is a bit pointless
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    r75865 | benjamin.peterson | 2009-10-27 15:49:00 -0500 (Tue, 27 Oct 2009) | 1 line

    explain reason for warning
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    r76059 | benjamin.peterson | 2009-11-02 11:43:47 -0600 (Mon, 02 Nov 2009) | 1 line

    tuples are no longer used for children
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    r76060 | benjamin.peterson | 2009-11-02 11:55:40 -0600 (Mon, 02 Nov 2009) | 1 line

    revert r76059; apparently some fixers rely on Leaf no () for children
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    r76061 | benjamin.peterson | 2009-11-02 12:06:17 -0600 (Mon, 02 Nov 2009) | 1 line

    make fix_tuple_params keep the tree valid #7253
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1 files changed, 13 insertions, 5 deletions

diff --git a/Lib/lib2to3/fixes/fix_map.py b/Lib/lib2to3/fixes/fix_map.py
index cf8f351706..77d66c445e 100644
--- a/Lib/lib2to3/fixes/fix_map.py
+++ b/Lib/lib2to3/fixes/fix_map.py
@@ -49,8 +49,7 @@ class FixMap(fixer_base.ConditionalFix):
     >
     |
     power<
-        'map'
-        args=trailer< '(' [any] ')' >
+        'map' trailer< '(' [arglist=any] ')' >
     >
     """
 
@@ -66,13 +65,22 @@ class FixMap(fixer_base.ConditionalFix):
             new.prefix = ""
             new = Call(Name("list"), [new])
         elif "map_lambda" in results:
-            new = ListComp(results.get("xp").clone(),
-                           results.get("fp").clone(),
-                           results.get("it").clone())
+            new = ListComp(results["xp"].clone(),
+                           results["fp"].clone(),
+                           results["it"].clone())
         else:
             if "map_none" in results:
                 new = results["arg"].clone()
             else:
+                if "arglist" in results:
+                    args = results["arglist"]
+                    if args.type == syms.arglist and \
+                       args.children[0].type == token.NAME and \
+                       args.children[0].value == "None":
+                        self.warning(node, "cannot convert map(None, ...) "
+                                     "with multiple arguments because map() "
+                                     "now truncates to the shortest sequence")
+                        return
                 if in_special_context(node):
                     return None
                 new = node.clone()