⚡️ Speed up function get_windows_executable_command by 158%#4
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⚡️ Speed up function get_windows_executable_command by 158%#4codeflash-ai[bot] wants to merge 1 commit intomainSaga4/python-sdk:mainfrom codeflash/optimize-get_windows_executable_command-ma2xrxkuSaga4/python-sdk:codeflash/optimize-get_windows_executable_command-ma2xrxkuCopy head branch name to clipboard
get_windows_executable_command by 158%#4codeflash-ai[bot] wants to merge 1 commit intomainSaga4/python-sdk:mainfrom
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Certainly! Let’s analyze the profiling results and rewrite the function for speed.
### Profiling Analysis
- The **`shutil.which` calls dominate runtime**—especially the ones inside the extension loop (almost 79% of the time).
- Creating formatted strings for each extension and calling `shutil.which` serially is inefficient.
### Optimization Approach
- **Cut redundant lookups**: Use the `shutil.which` “PATHEXT” search feature, which *already* tries `.COM;.EXE;.BAT;.CMD` (and others based on system configuration). On Windows, `shutil.which('foo')` automatically checks extensions given by the `PATHEXT` environment variable.
- Only need to call `shutil.which(command)`—no need for a manual extension loop in most cases.
- As an extra safety, can manually try Case 2 (explicit extensions—e.g., `.ps1` is not always in PATHEXT), but only if the first call fails.
### Optimized Code
### Summary of Changes
- **Removed the slow extension loop**; rely on `shutil.which` (leverages `PATHEXT`).
- Only falls back to `.ps1` search if normal search fails (optional, if really needed).
- Fewer calls, less string formatting, much less repeated work; this will **run a lot faster, especially under heavy load or many queries**.
Let me know if you want further Windows-specific fine-tuning!
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📄 158% (1.58x) speedup for
get_windows_executable_commandinsrc/mcp/client/stdio/win32.py⏱️ Runtime :
182 milliseconds→70.5 milliseconds(best of106runs)📝 Explanation and details
Certainly! Let’s analyze the profiling results and rewrite the function for speed.
Profiling Analysis
shutil.whichcalls dominate runtime—especially the ones inside the extension loop (almost 79% of the time).shutil.whichserially is inefficient.Optimization Approach
shutil.which“PATHEXT” search feature, which already tries.COM;.EXE;.BAT;.CMD(and others based on system configuration). On Windows,shutil.which('foo')automatically checks extensions given by thePATHEXTenvironment variable.shutil.which(command)—no need for a manual extension loop in most cases..ps1is not always in PATHEXT), but only if the first call fails.Optimized Code
Summary of Changes
shutil.which(leveragesPATHEXT)..ps1search if normal search fails (optional, if really needed).Let me know if you want further Windows-specific fine-tuning!
✅ Correctness verification report:
🌀 Generated Regression Tests Details
To edit these changes
git checkout codeflash/optimize-get_windows_executable_command-ma2xrxkuand push.