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fix: better tool call parsing error message (#1710)

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# What does this PR do?
context #1584

## Test Plan
<img width="1366" alt="image"
src="https://github.com/user-attachments/assets/b490b590-3270-43cb-838e-8446a8948f1d"
/>
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ehhuang 2025-03-19 20:39:10 -07:00 • committed by GitHub
parent 41bd350539
commit c4e1b8d094
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1 changed files with 12 additions and 1 deletions
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13
llama_stack/models/llama/llama3/tool_utils.py
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@ -15,8 +15,11 @@ import json
import re
from typing import Optional, Tuple
from llama_stack.log import get_logger
from llama_stack.models.llama.datatypes import BuiltinTool, RecursiveType, ToolCall, ToolPromptFormat
logger = get_logger(name=__name__, category="inference")
BUILTIN_TOOL_PATTERN = r'\b(?P<tool_name>\w+)\.call\(query="(?P<query>[^"]*)"\)'
CUSTOM_TOOL_CALL_PATTERN = re.compile(r"<function=(?P<function_name>[^}]+)>(?P<args>{.*?})")
@ -92,7 +95,15 @@ def parse_python_list_for_function_calls(input_string):
# Extract keyword arguments
for keyword in node.keywords:
function_args[keyword.arg] = ast.literal_eval(keyword.value)
try:
function_args[keyword.arg] = ast.literal_eval(keyword.value)
except ValueError as e:
logger.error(
f"Error parsing tool call argument '{keyword.arg}': {e}, full input string: '{input_string}'"
)
raise ValueError(
f"Error parsing tool call argument '{keyword.arg}', full input string: '{input_string}'"
) from e
result.append((function_name, function_args))