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fix: Attempting to serialize bytes type causes error (5660) #5682

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aviruthen wants to merge 2 commits into from
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fix: Attempting to serialize bytes type causes error (5660) #5682

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0fce373
fix: Attempting to serialize bytes type causes error (5660)
aviruthen Mar 26, 2026
02f04a1
fix: address review comments (iteration #1)
aviruthen Mar 26, 2026
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4 changes: 2 additions & 2 deletions sagemaker-core/src/sagemaker/core/utils/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -273,7 +273,7 @@ def pascal_to_snake(pascal_str):


def is_not_primitive(obj):
return not isinstance(obj, (int, float, str, bool, datetime.datetime))
return not isinstance(obj, (int, float, str, bool, bytes, datetime.datetime))
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@mufaddal-rohawala mufaddal-rohawala Mar 26, 2026

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Bug: Incorrect indentation introduced. The return statement now has 8 spaces of indentation (two levels) instead of the original 4 spaces (one level). This will cause an IndentationError at runtime since the function body was previously at 4-space indentation. Please fix:

    return not isinstance(obj, (int, float, str, bool, bytes, datetime.datetime))



def is_not_str_dict(obj):
Expand All @@ -285,7 +285,7 @@ def is_primitive_list(obj):


def is_primitive_class(cls):
return cls in (str, int, bool, float, datetime.datetime)
return cls in (str, int, bool, float, bytes, datetime.datetime)
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@mufaddal-rohawala mufaddal-rohawala Mar 26, 2026

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Bug: Same incorrect indentation issue here. The return statement has 8 spaces instead of 4. Please fix:

    return cls in (str, int, bool, float, bytes, datetime.datetime)



class Unassigned:
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24 changes: 24 additions & 0 deletions sagemaker-core/tests/unit/generated/test_utils.py
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Expand Up @@ -373,6 +373,30 @@ def test_serialize_method_nested_shape():
}

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@mufaddal-rohawala mufaddal-rohawala Mar 26, 2026

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Nit: There's an extra blank line here (two blank lines between the previous test and this one, resulting in three blank lines total between top-level definitions). PEP 8 specifies two blank lines between top-level definitions. Minor, but CI linting may flag it.



def test_serialize_with_bytes_value_returns_bytes():
result = serialize(b'1')
assert result == b'1'


def test_serialize_dict_with_bytes_value_returns_dict_with_bytes():
result = serialize({'body': b'1'})
assert result == {'body': b'1'}


def test_is_not_primitive_with_bytes_returns_false():
assert is_not_primitive(b'hello') is False


def test_is_primitive_class_with_bytes_returns_true():
assert is_primitive_class(bytes) is True


def test_serialize_list_with_bytes_elements():
result = serialize([b'a', b'b'])
assert result == [b'a', b'b']


class TestUnassignedBehavior:
"""Test Unassigned class methods for proper behavior.

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