use a separate sync_comp_for (suggested by Yury)

regenerate symbol.py
simplify lib2to3 changes
python · 1st1 · Oct 6, 2017 · 1st1 · Oct 6, 2017 · JelleZijlstra
diff --git a/Lib/lib2to3/tests/test_parser.py b/Lib/lib2to3/tests/test_parser.py
-        self.invalid_syntax("""def foo():
-                                   async for a in b: pass""")
+        self.validate("""def foo():
+                             async for a in b: pass""")
diff --git a/Lib/lib2to3/tests/test_parser.py b/Lib/lib2to3/tests/test_parser.py
-        self.invalid_syntax("""def foo():
-                                   async with a: pass""")
+        self.validate("""def foo():
+                             async with a: pass""")
diff --git a/Grammar/Grammar b/Grammar/Grammar
+comp_for_or_async: comp_async_for | comp_for
+comp_iter: comp_async_for | comp_for | comp_if
+comp_async_for: 'async' 'for' exprlist 'in' or_test [comp_iter]
+comp_for: 'for' exprlist 'in' or_test [comp_iter]
 comp_if: 'if' test_nocond [comp_iter]
diff --git a/Lib/lib2to3/Grammar.txt b/Lib/lib2to3/Grammar.txt
+comp_for_or_async: comp_async_for | comp_for
+comp_iter: comp_async_for | comp_for | comp_if
+comp_async_for: 'async' 'for' exprlist 'in' testlist_safe [comp_iter]
+comp_for: 'for' exprlist 'in' testlist_safe [comp_iter]
 comp_if: 'if' old_test [comp_iter]
diff --git a/Lib/test/test_coroutines.py b/Lib/test/test_coroutines.py

-    def test_goodsyntax_1(self):
+    def test_badsyntax_4(self):
        # Tests for issue 24619
diff --git a/Misc/NEWS.d/next/Core and Builtins/2017-07-20-22-03-44.bpo-30406._kr47t.rst b/Misc/NEWS.d/next/Core and Builtins/2017-07-20-22-03-44.bpo-30406._kr47t.rst
@@ -0,0 +1 @@
+``async`` and ``await`` are now proper keywords, as specified in PEP 492.