⚡️ Speed up function _check_value by 13%
#32
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📄 13% (0.13x) speedup for
_check_valueinoptuna/pruners/_threshold.py⏱️ Runtime :
3.56 milliseconds→3.14 milliseconds(best of82runs)📝 Explanation and details
The optimized code achieves a 13% speedup through two key changes:
Eliminates unnecessary variable assignment: The original code assigns
value = float(value)then returns it later. The optimized version returnsfloat(value)directly, removing the assignment overhead and reducing memory operations.Switches from
.format()to f-string: The error message construction changes from"...{}...".format(type(value).__name__)tof"...{type(value).__name__}...". F-strings are faster because they're evaluated at compile-time rather than runtime, avoiding the method call overhead of.format().The performance gains are most pronounced in error cases - test results show 15-31% improvements for invalid inputs (strings like "abc", None, complex numbers) where the TypeError path is taken. Valid numeric inputs show smaller but consistent gains of 5-25% due to the eliminated assignment.
These optimizations are particularly effective for:
The changes maintain identical functionality while reducing both CPU cycles and memory operations per function call.
✅ Correctness verification report:
🌀 Generated Regression Tests and Runtime
🔎 Concolic Coverage Tests and Runtime
codeflash_concolic_wou29s7s/tmpb8biv61w/test_concolic_coverage.py::test__check_valuecodeflash_concolic_wou29s7s/tmpb8biv61w/test_concolic_coverage.py::test__check_value_2To edit these changes
git checkout codeflash/optimize-_check_value-mhaz7y6mand push.