From 37226517d2a380433a182c1f811bf415c280ea1c Mon Sep 17 00:00:00 2001
From: "codeflash-ai[bot]"
 <148906541+codeflash-ai[bot]@users.noreply.github.com>
Date: Wed, 12 Nov 2025 09:50:57 +0000
Subject: [PATCH] Optimize InvokeAIArgs.parse_args
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The optimization stores the result of `_parser.parse_args()` in a local variable `args` instead of accessing `InvokeAIArgs.args` twice. This eliminates one attribute lookup on the class, reducing the overhead of resolving `InvokeAIArgs.args` in the return statement.

**Key Change:**
- Original: `InvokeAIArgs.args = _parser.parse_args()` followed by `return InvokeAIArgs.args`
- Optimized: `args = _parser.parse_args()` followed by `return args`

**Why it's faster:**
In Python, attribute access on class objects involves name resolution overhead. By using a local variable, the return statement avoids the second class attribute lookup, making the code slightly more efficient. Local variable access is faster than attribute access in Python's execution model.

**Performance Impact:**
The line profiler shows the optimization saves time primarily on the return statement (516ns vs 1294ns per hit), with the total runtime improving from 35.2μs to 33.1μs (6% speedup). The annotated tests confirm consistent improvements, with some cases showing up to 12.1% faster execution.

**Practical Benefits:**
While this is a micro-optimization, CLI argument parsing often happens at application startup where every microsecond counts for perceived responsiveness. The optimization maintains identical functionality while reducing unnecessary attribute lookups, making it a clean performance win with no downsides.
---
 invokeai/frontend/cli/arg_parser.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/invokeai/frontend/cli/arg_parser.py b/invokeai/frontend/cli/arg_parser.py
index 72da8f76560..58083c3eb62 100644
--- a/invokeai/frontend/cli/arg_parser.py
+++ b/invokeai/frontend/cli/arg_parser.py
@@ -41,6 +41,8 @@ class InvokeAIArgs:
     @staticmethod
     def parse_args() -> Optional[Namespace]:
         """Parse CLI args and store the result."""
-        InvokeAIArgs.args = _parser.parse_args()
+        # Avoid repeated attribute access for slight performance gain
+        args = _parser.parse_args()
+        InvokeAIArgs.args = args
         InvokeAIArgs.did_parse = True
-        return InvokeAIArgs.args
+        return args