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handle 3.13 GenericAlias hint #20020

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handle 3.13 GenericAlias hint #20020

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10 changes: 7 additions & 3 deletions chia/wallet/util/clvm_streamable.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,8 @@

import dataclasses
import functools
from types import MappingProxyType
from typing import Any, Callable, Generic, Optional, TypeVar, Union, get_args, get_type_hints
from types import GenericAlias, MappingProxyType
from typing import Any, Callable, Generic, Optional, TypeVar, Union, get_args, get_origin, get_type_hints

from hsms.clvm_serde import from_program_for_type, to_program_for_type
from typing_extensions import TypeGuard
Expand Down Expand Up @@ -101,7 +101,11 @@ def is_compound_type(typ: Any) -> bool:
# TODO: this is more than _just_ a Streamable, but it is also a Streamable and that's
# useful for now
def is_clvm_streamable_type(v: type[object]) -> TypeGuard[type[Streamable]]:
return issubclass(v, Streamable) and hasattr(v, "_clvm_streamable")
if isinstance(v, GenericAlias):
resolved = get_origin(v)
else:
resolved = v
return issubclass(resolved, Streamable) and hasattr(resolved, "_clvm_streamable")


# TODO: this is more than _just_ a Streamable, but it is also a Streamable and that's
Expand Down
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