test_parse4.py

import re
import json

def extract_json(text: str) -> dict:
    try:
        if isinstance(text, dict) or isinstance(text, list):
            return text

        filtered_text = ""
        filtered_text = re.sub(r'^.*?({|\[)', r'\1', text, flags=re.DOTALL)
        filtered_text  =  re.sub(r'(}|\])(?!.*(\]|\})).*$', r'\1', filtered_text, flags=re.DOTALL)
        
        # This was in the codebase:
        filtered_text = re.sub("\\'", "'", filtered_text) # replace \' with just '
        filtered_text = re.sub("\\,", ",", filtered_text)
        
        print("Filtered text:", repr(filtered_text))
        try:
            parsed = json.loads(filtered_text, strict=False)
        except json.JSONDecodeError as e:
            print("JSON error:", e)
            import ast
            try:
                parsed = ast.literal_eval(filtered_text)
            except Exception as ast_e:
                print("AST error:", ast_e)
                return {}
        return parsed
    except Exception as e:
        print("Outer error:", e)
        return {}

test_str1 = """
{
  "test, key": "value, comma"
}
"""

print("Test 1:", extract_json(test_str1))