perf: reduce root import overhead#1513
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Summary:
Fixes #1211 by reducing
import anthropicoverhead with lazy root exports while preserving the public import surface. The root import now avoids loading the heavy client/type stack until those symbols are used.Changes:
anthropic.typesfrom_exceptions.pyat runtime.Testing instructions:
uv run pytest tests\test_imports.py tests\lib\test_vertex.py tests\lib\tools\test_functions.py -q.uv run ruff check src\anthropic\__init__.py src\anthropic\_exceptions.py tests\test_imports.py.uv run pyright src\anthropic\__init__.py src\anthropic\_exceptions.py tests\test_imports.py.python -X importtime -c "import anthropic".