jrmccluskey commented on code in PR #24986:
URL: https://github.com/apache/beam/pull/24986#discussion_r1072797044
##########
sdks/python/apache_beam/typehints/typehints.py:
##########
@@ -1190,6 +1190,12 @@ def normalize(x, none_as_type=False):
return type(None)
elif x in _KNOWN_PRIMITIVE_TYPES:
return _KNOWN_PRIMITIVE_TYPES[x]
+ elif sys.version_info >= (3, 9) and isinstance(x, types.GenericAlias):
+ # TODO(https://github.com/apache/beam/issues/23366): handle PEP 585
+ # generic type hints properly
+ raise TypeError(
+ 'PEP 585 generic type hints like %s are not yet supported, '
+ 'use typing module containers instead.' % x)
Review Comment:
Done
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