Merged revisions 61602-61723 via svnmerge from

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

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  r61626 | david.wolever | 2008-03-19 17:19:16 +0100 (Mi, 19 Mär 2008) | 1 line

  Added fixer for implicit local imports.  See #2414.
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  r61628 | david.wolever | 2008-03-19 17:57:43 +0100 (Mi, 19 Mär 2008) | 1 line

  Added a class for tests which should not run if a particular import is found.
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  r61629 | collin.winter | 2008-03-19 17:58:19 +0100 (Mi, 19 Mär 2008) | 1 line

  Two more relative import fixes in pgen2.
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  r61635 | david.wolever | 2008-03-19 20:16:03 +0100 (Mi, 19 Mär 2008) | 1 line

  Fixed print fixer so it will do the Right Thing when it encounters __future__.print_function.  2to3 gets upset, though, so the tests have been commented out.
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  r61637 | david.wolever | 2008-03-19 21:37:17 +0100 (Mi, 19 Mär 2008) | 3 lines

  Added a fixer for itertools imports (from itertools import imap, ifilterfalse --> from itertools import filterfalse)
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  r61645 | david.wolever | 2008-03-19 23:22:35 +0100 (Mi, 19 Mär 2008) | 1 line

  SVN is happier when you add the files you create... -_-'
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  r61654 | david.wolever | 2008-03-20 01:09:56 +0100 (Do, 20 Mär 2008) | 1 line

  Added an explicit sort order to fixers -- fixes problems like #2427
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  r61664 | david.wolever | 2008-03-20 04:32:40 +0100 (Do, 20 Mär 2008) | 3 lines

  Fixes #2428 -- comments are no longer eatten by __future__ fixer.
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  r61673 | david.wolever | 2008-03-20 17:22:40 +0100 (Do, 20 Mär 2008) | 1 line

  Added 2to3 node pretty-printer
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  r61679 | david.wolever | 2008-03-20 20:50:42 +0100 (Do, 20 Mär 2008) | 1 line

  Made node printing a little bit prettier
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  r61723 | martin.v.loewis | 2008-03-22 00:59:27 +0100 (Sa, 22 Mär 2008) | 2 lines

  Fix whitespace.
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1 files changed, 5 insertions, 14 deletions

diff --git a/Lib/lib2to3/fixes/fix_zip.py b/Lib/lib2to3/fixes/fix_zip.py
index e072713..e319b54 100644
--- a/Lib/lib2to3/fixes/fix_zip.py
+++ b/Lib/lib2to3/fixes/fix_zip.py
@@ -9,33 +9,24 @@ iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or for V in <>:.
 
 # Local imports
 from . import basefix
-from .util import Name, Call, does_tree_import, in_special_context
+from .util import Name, Call, in_special_context
 
-class FixZip(basefix.BaseFix):
+class FixZip(basefix.ConditionalFix):
 
     PATTERN = """
     power< 'zip' args=trailer< '(' [any] ')' >
     >
     """
 
-    def start_tree(self, *args):
-        super(FixZip, self).start_tree(*args)
-        self._future_zip_found = None
-
-    def has_future_zip(self, node):
-        if self._future_zip_found is not None:
-            return self._future_zip_found
-        self._future_zip_found = does_tree_import('future_builtins', 'zip', node)
-        return self._future_zip_found
+    skip_on = "future_builtins.zip"
 
     def transform(self, node, results):
-        if self.has_future_zip(node):
-            # If a future zip has been imported for this file, we won't
-            # be making any modifications
+        if self.should_skip(node):
             return
 
         if in_special_context(node):
             return None
+
         new = node.clone()
         new.set_prefix("")
         new = Call(Name("list"), [new])