From 8092a89688f92dee83d1d0111acaa1e1d2dfdb85 Mon Sep 17 00:00:00 2001
From: satyajandhyala <satya.k.jandhyala@gmail.com>
Date: Tue, 20 Feb 2024 21:18:54 -0800
Subject: [PATCH] Changed command line argpasrse to process '--symmetric
 [True|False]'. (#19577)

### Description
<!-- Describe your changes. -->
Accept the command line option --symmetric and its optional value
correctly. If the optional value matches uncased to 'True' then set
symmetric to True else set symmetric to False. Asymmetric quantization
will generate zero_point input.
```
usage: matmul_4bits_quantizer.py [-h] --input_model INPUT_MODEL --output_model OUTPUT_MODEL [--block_size BLOCK_SIZE] [--symmetric [{True,False}]] [--accuracy_level ACCURACY_LEVEL] [-v]
                                 [--nodes_to_exclude NODES_TO_EXCLUDE [NODES_TO_EXCLUDE ...]]
```
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
---
 .../python/tools/quantization/matmul_4bits_quantizer.py  | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/onnxruntime/python/tools/quantization/matmul_4bits_quantizer.py b/onnxruntime/python/tools/quantization/matmul_4bits_quantizer.py
index 3e9f9a6544..eb7bbec997 100644
--- a/onnxruntime/python/tools/quantization/matmul_4bits_quantizer.py
+++ b/onnxruntime/python/tools/quantization/matmul_4bits_quantizer.py
@@ -349,6 +349,10 @@ class MatMul4BitsQuantizer:
             self.int4_quant_algo()
 
 
+def ort_convert_str_to_bool(value):
+    return value.lower() in ("true", "1")
+
+
 def parse_args():
     parser = argparse.ArgumentParser(
         description="""Blockwise int4 quantization for MatMul 2D weight matrices.
@@ -366,7 +370,10 @@ set of 4b integers with a scaling factor and an optional offset.
         "--symmetric",
         required=False,
         default=True,
-        type=bool,
+        const=True,
+        nargs="?",
+        type=ort_convert_str_to_bool,
+        choices=[True, False],
         help="Indicate whether to quantize the model symmetrically",
     )
     parser.add_argument(