Sync typeshed (and fix typeshed build breakage) (#6403)

msullivan · web-flow · commit b8c78e6042d6 · 2019-02-14T14:40:02.000-08:00
This requires another (wrong, of course) addition to the errors in
testNewAnalyzerBasicTypeshed_newsemanal, since there has been a typeshed
change that causes another newsemanal error.

(This is actually the main motivation for this sync, to allow fixing the
typeshed build breakage.)
diff --git a/mypy/typeshed b/mypy/typeshed
@@ -1 +1 @@
-Subproject commit d8faf503ec2f34cf575786ab5ea9383a68179966
+Subproject commit d275e73e1fe67c0824733406d8ae5071d775f570
diff --git a/test-data/unit/pythoneval.test b/test-data/unit/pythoneval.test
@@ -1365,7 +1365,10 @@ from typing import Dict, List, Tuple
 x: Dict[str, List[int]]
 reveal_type(x['test'][0])
 [out]
+-- N.B: These errors are *wrong* and the new semantic analyzer can't yet
+-- fully analyze typeshed
 typing.pyi:251: error: Class typing.Sequence has abstract attributes "__len__"
 typing.pyi:251: note: If it is meant to be abstract, add 'abc.ABCMeta' as an explicit metaclass
+codecs.pyi:49: error: Cannot overwrite NamedTuple attribute "__init__"
 ast.pyi:31: error: Name 'PyCF_ONLY_AST' already defined (possibly by an import)
 _testNewAnalyzerBasicTypeshed_newsemanal.py:4: error: Revealed type is 'builtins.int*'
