Auto research json by AbhiPrasad · Pull Request #143 · braintrustdata/braintrust-sdk-python

Established the first successful bt_json benchmark baseline using the existing benchmark suite aggregate across all 11 cases.

Abhijeet Prasad (AbhiPrasad)

committed

Move primitive scalar and float fast paths to the top of _to_bt_safe so deep-copy traversal avoids logger imports and pydantic/dataclass probing for the overwhelmingly common leaf values.

Abhijeet Prasad (AbhiPrasad)

committed

Inline primitive scalar handling inside bt_safe_deep_copy and iterate mappings with .items() so recursive traversal avoids calling _to_bt_safe for common leaf values and avoids extra dict lookups.

Abhijeet Prasad (AbhiPrasad)

committed

Use collections.abc.Mapping instead of typing.Mapping in bt_json hot paths; typing.Mapping incurs expensive runtime instancecheck logic during every recursive container visit.

Abhijeet Prasad (AbhiPrasad)

committed

Split bt_safe_deep_copy container handling into dict/list/tuple/set fast paths and add a string-key fast path, avoiding expensive ABC checks and unnecessary str() calls on the common recursive cases.

Abhijeet Prasad (AbhiPrasad)

committed

Add exact-type fast paths for the common built-in scalar and container cases in _to_bt_safe and bt_safe_deep_copy, falling back to isinstance only for subclasses and uncommon container implementati…

Abhijeet Prasad (AbhiPrasad)

committed

Replace dataclasses.is_dataclass/dataclasses.fields and exception-driven pydantic probing with direct attribute checks (__dataclass_fields__, model_dump, dict), cutting overhead for dataclass objec…

Abhijeet Prasad (AbhiPrasad)

committed

Reordered bt_safe_deep_copy to check exact built-in container types before subclass scalar fallbacks, so common dict/list/tuple/set recursion avoids extra isinstance probes on every container node.

Abhijeet Prasad (AbhiPrasad)

committed

Cache the lazily imported braintrust.logger special-case types so _to_bt_safe avoids repeating the in-function import path for non-primitive values while preserving the circular-import-safe initial…

Abhijeet Prasad (AbhiPrasad)

committed

Hoist depth+1 out of the inner dict/list/tuple/set recursion loops in bt_safe_deep_copy so the hot container traversal avoids repeated integer addition on every element/key visit.

Abhijeet Prasad (AbhiPrasad)

committed

Look up dataclass and pydantic methods on the class instead of the instance in _to_bt_safe, avoiding bound-method creation and redundant instance attribute lookups on dataclass/model inputs.

Abhijeet Prasad (AbhiPrasad)

committed

Use exact-type checks for dict keys in bt_safe_deep_copy so the common all-built-in-string-key path avoids isinstance overhead while still coercing string subclasses and non-string keys safely.

Abhijeet Prasad (AbhiPrasad)

committed

Only enter the warning-suppression context for model_dump on actual Pydantic v2 models (detected via __pydantic_serializer__), so model_dump-compatible non-Pydantic objects avoid the catch_warnings…

Abhijeet Prasad (AbhiPrasad)

committed

Add an exact-dict scalar-prefix fast path in bt_safe_deep_copy: scalar-only dicts now finish without recursive calls, and mixed dicts recurse only once they hit the first non-scalar value while pre…

Abhijeet Prasad (AbhiPrasad)

committed

Reorder the hottest exact-type scalar checks around the observed bt_json payload mix so str/int hits happen before the rarely-taken None case in _to_bt_safe, bt_safe_deep_copy, and the new dict sca…

Abhijeet Prasad (AbhiPrasad)

committed

Make the exact-dict scalar-prefix fast path optimistic for exact-string keys: the common all-string-key case now writes keys directly and only falls back to stringification once a non-string key is…

Abhijeet Prasad (AbhiPrasad)

committed

Delay exact-dict visited-set insertion until the first child that actually needs recursion, so scalar-only dicts skip add/discard churn entirely while mixed dicts still detect cycles before descend…

Abhijeet Prasad (AbhiPrasad)

committed

Route common non-slotted dataclass instances through bt_safe_deep_copy on their dict when it exactly matches the dataclass field set, letting the heavily optimized dict fast path sanitize field…

Abhijeet Prasad (AbhiPrasad)

committed

Use math.isfinite as the hot finite-float fast path in _to_bt_safe, bt_safe_deep_copy, and the exact-dict scalar-prefix loop, only falling back to NaN/+/-Infinity handling for the uncommon non-fini…

Abhijeet Prasad (AbhiPrasad)

committed

Move dataclass/model-dump/dict probing ahead of the Braintrust special-object isinstance chain while keeping model_json_schema safely type-gated, so dataclasses and model-like objects avoid the cac…

Abhijeet Prasad (AbhiPrasad)

committed

Special-case exact dict elements inside the exact list fast path so the common list-of-dicts workload avoids an extra _deep_copy_object dispatch per element while preserving circular detection, key…

Abhijeet Prasad (AbhiPrasad)

committed

Delay exact-dict visited-set membership/insertion until the first child that actually needs recursive descent, including the new list-of-dicts fast path, so scalar-prefix dicts skip upfront id/in-s…

Abhijeet Prasad (AbhiPrasad)

committed

Flip the exact-list branch to make exact dict elements the direct hot path and send the rare non-dict elements to the fallback branch, matching the benchmark's overwhelmingly list-of-dicts containe…

Abhijeet Prasad (AbhiPrasad)

committed

Move the exact built-in container branches ahead of the exact scalar/float branches in bt_safe_deep_copy so the recursively dominant dict/list/tuple/set nodes hit their hot path sooner, while still…

Abhijeet Prasad (AbhiPrasad)

committed

Move dataclass/model-dump/dict probing ahead of the subclass scalar fallback checks in _to_bt_safe, so dataclass and model-like objects avoid failed isinstance(str/bool/int/float) probes while exac…

Abhijeet Prasad (AbhiPrasad)

committed

Switch visited-set cleanup from discard() to remove() in bt_safe_deep_copy branches where membership is guaranteed, trimming a bit of defensive overhead from the hot exact-container and fallback co…

Abhijeet Prasad (AbhiPrasad)

committed

Add an early isinstance(v, str) fast path in _to_bt_safe ahead of dataclass/model probing so common string subclasses (like enum-style span attributes) bypass the richer object-detection work witho…

Abhijeet Prasad (AbhiPrasad)

committed

Inline exact scalar and finite-float handling for non-dict elements inside the exact-list fast path so scalar/string list items avoid a full _deep_copy_object redispatch while the dominant list-of-…

Abhijeet Prasad (AbhiPrasad)

committed

Compute type(value) once per exact-list element and reuse it for the dict/scalar/float branches, avoiding a redundant type() call on every non-dict list item while preserving the optimized list-of-…

Abhijeet Prasad (AbhiPrasad)

committed

Split the exact-dict and list-of-dicts teardown into a true two-phase path: scalar-only prefixes now return without paying a try/finally cleanup frame, and visited removal is only wrapped around th…

Abhijeet Prasad (AbhiPrasad)

committed

Apply the same two-phase visited-set teardown to exact lists: delay adding the list itself to the visited set until the first child that actually needs recursive descent, so scalar-only and scalar-…

Abhijeet Prasad (AbhiPrasad)

committed

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Auto research json#143

Auto research json#143
Abhijeet Prasad (AbhiPrasad) wants to merge 32 commits intomainfrom
auto-research-json

Commits on Mar 25, 2026

Established the first successful bt_json benchmark baseline using the existing benchmark suite aggregate across all 11 cases.

Move primitive scalar and float fast paths to the top of _to_bt_safe so deep-copy traversal avoids logger imports and pydantic/dataclass probing for the overwhelmingly common leaf values.

Inline primitive scalar handling inside bt_safe_deep_copy and iterate mappings with .items() so recursive traversal avoids calling _to_bt_safe for common leaf values and avoids extra dict lookups.

Use collections.abc.Mapping instead of typing.Mapping in bt_json hot paths; typing.Mapping incurs expensive runtime instancecheck logic during every recursive container visit.

Split bt_safe_deep_copy container handling into dict/list/tuple/set fast paths and add a string-key fast path, avoiding expensive ABC checks and unnecessary str() calls on the common recursive cases.

Add exact-type fast paths for the common built-in scalar and container cases in _to_bt_safe and bt_safe_deep_copy, falling back to isinstance only for subclasses and uncommon container implementati…

Replace dataclasses.is_dataclass/dataclasses.fields and exception-driven pydantic probing with direct attribute checks (__dataclass_fields__, model_dump, dict), cutting overhead for dataclass objec…

Reordered bt_safe_deep_copy to check exact built-in container types before subclass scalar fallbacks, so common dict/list/tuple/set recursion avoids extra isinstance probes on every container node.

Cache the lazily imported braintrust.logger special-case types so _to_bt_safe avoids repeating the in-function import path for non-primitive values while preserving the circular-import-safe initial…

Hoist depth+1 out of the inner dict/list/tuple/set recursion loops in bt_safe_deep_copy so the hot container traversal avoids repeated integer addition on every element/key visit.

Look up dataclass and pydantic methods on the class instead of the instance in _to_bt_safe, avoiding bound-method creation and redundant instance attribute lookups on dataclass/model inputs.

Use exact-type checks for dict keys in bt_safe_deep_copy so the common all-built-in-string-key path avoids isinstance overhead while still coercing string subclasses and non-string keys safely.

Only enter the warning-suppression context for model_dump on actual Pydantic v2 models (detected via __pydantic_serializer__), so model_dump-compatible non-Pydantic objects avoid the catch_warnings…

Add an exact-dict scalar-prefix fast path in bt_safe_deep_copy: scalar-only dicts now finish without recursive calls, and mixed dicts recurse only once they hit the first non-scalar value while pre…

Reorder the hottest exact-type scalar checks around the observed bt_json payload mix so str/int hits happen before the rarely-taken None case in _to_bt_safe, bt_safe_deep_copy, and the new dict sca…

Make the exact-dict scalar-prefix fast path optimistic for exact-string keys: the common all-string-key case now writes keys directly and only falls back to stringification once a non-string key is…

Delay exact-dict visited-set insertion until the first child that actually needs recursion, so scalar-only dicts skip add/discard churn entirely while mixed dicts still detect cycles before descend…

Route common non-slotted dataclass instances through bt_safe_deep_copy on their dict when it exactly matches the dataclass field set, letting the heavily optimized dict fast path sanitize field…

Use math.isfinite as the hot finite-float fast path in _to_bt_safe, bt_safe_deep_copy, and the exact-dict scalar-prefix loop, only falling back to NaN/+/-Infinity handling for the uncommon non-fini…

Move dataclass/model-dump/dict probing ahead of the Braintrust special-object isinstance chain while keeping model_json_schema safely type-gated, so dataclasses and model-like objects avoid the cac…

Special-case exact dict elements inside the exact list fast path so the common list-of-dicts workload avoids an extra _deep_copy_object dispatch per element while preserving circular detection, key…

Delay exact-dict visited-set membership/insertion until the first child that actually needs recursive descent, including the new list-of-dicts fast path, so scalar-prefix dicts skip upfront id/in-s…

Flip the exact-list branch to make exact dict elements the direct hot path and send the rare non-dict elements to the fallback branch, matching the benchmark's overwhelmingly list-of-dicts containe…

Move the exact built-in container branches ahead of the exact scalar/float branches in bt_safe_deep_copy so the recursively dominant dict/list/tuple/set nodes hit their hot path sooner, while still…

Move dataclass/model-dump/dict probing ahead of the subclass scalar fallback checks in _to_bt_safe, so dataclass and model-like objects avoid failed isinstance(str/bool/int/float) probes while exac…

Switch visited-set cleanup from discard() to remove() in bt_safe_deep_copy branches where membership is guaranteed, trimming a bit of defensive overhead from the hot exact-container and fallback co…

Add an early isinstance(v, str) fast path in _to_bt_safe ahead of dataclass/model probing so common string subclasses (like enum-style span attributes) bypass the richer object-detection work witho…

Inline exact scalar and finite-float handling for non-dict elements inside the exact-list fast path so scalar/string list items avoid a full _deep_copy_object redispatch while the dominant list-of-…

Compute type(value) once per exact-list element and reuse it for the dict/scalar/float branches, avoiding a redundant type() call on every non-dict list item while preserving the optimized list-of-…

Split the exact-dict and list-of-dicts teardown into a true two-phase path: scalar-only prefixes now return without paying a try/finally cleanup frame, and visited removal is only wrapped around th…

Apply the same two-phase visited-set teardown to exact lists: delay adding the list itself to the visited set until the first child that actually needs recursive descent, so scalar-only and scalar-…

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