Initial Query

Write me a python function called fix_json that fixes broken JSON objects, and returns the parsed object. I'll pass the JSON object as a string and it should fix: - Incorect parenthesis, e.g., {"a": (5, 4)} -> {"a": [5, 4]} - Incorrect single quotes, e.g., {'a': 5} -> {"a": 5} - False/True -> false/true Make sure not to break data inside strings! So if there's a True or a ( inside a string keep them the way they are. Also don't break quoted strings

LLM Generation

Query

Write me a python function called fix_json that fixes broken JSON objects, and returns the parsed object. I'll pass the JSON object as a string and it should fix: - Incorect parenthesis, e.g., {"a": (5, 4)} -> {"a": [5, 4]} - Incorrect single quotes, e.g., {'a': 5} -> {"a": 5} - False/True -> false/true Make sure not to break data inside strings! So if there's a True or a ( inside a string keep them the way they are. Also don't break quoted strings

Output

Below is one solution. The idea is to “scan” the original string character‐by‐character and only change things when we are not inside an already–quoted string. (This simple scanner does assume that your JSON isn’t too pathological.) In the code we convert any outside-of-string single quote to a double quote (and also the corresponding closing quote), and replace outside-of-string “(” with “[” and “)” with “]”. We also “tokenize” alphabetic sequences and replace exactly “True” with “true” and “False” with “false”. Finally we pass the fixed string to json.loads. Below is the complete code: ------------------------------------------------ #!/usr/bin/env python3 import json def fix_json(s): """ Fix a JSON object (given as a string) that might contain: - incorrect parenthesis: ( and ) should become [ and ] - keys or string values enclosed in single quotes rather than double quotes - Python booleans True/False which should be lower-case in JSON This function avoids applying changes inside already quoted string contents. Returns the parsed JSON object. """ out = [] i = 0 in_string = False # when inside string, store the original quote char so you know when it ends. current_quote = None escaped = False while i < len(s): ch = s[i] if in_string: # We are inside a quoted string so do not change its contents. if escaped: out.append(ch) escaped = False else: if ch == "\\": out.append(ch) escaped = True elif ch == current_quote: # End the string. We always output a double quote. out.append('"') in_string = False current_quote = None else: out.append(ch) i += 1 else: # not inside a string; check if we are about to start one: if ch == '"' or ch == "'": # start a quoted string. Always output a double quote. in_string = True current_quote = ch out.append('"') i += 1 elif ch == "(": # replace parenthesis with square bracket out.append("[") i += 1 elif ch == ")": out.append("]") i += 1 elif ch.isalpha(): # We might be at the start of a literal (e.g., True or False) start = i while i < len(s) and s[i].isalpha(): i += 1 token = s[start:i] if token == "True": out.append("true") elif token == "False": out.append("false") else: out.append(token) else: out.append(ch) i += 1 fixed = "".join(out) # Now try to parse the fixed JSON string. return json.loads(fixed) # Example usage: if __name__ == '__main__': examples = [ '{"a": (5, 4)}', # Fixing parenthesis -> square brackets. "{'a': 5}", # Fix single quotes. '{"flag": True, "list": (1,2,3)}', # Both issues. '{"message": "Don\'t change ( this True inside this string."}' ] for ex in examples: parsed = fix_json(ex) print("Original:", ex) print("Fixed :", parsed) print("----------") """ Explanation: • We iterate over each character in the provided string. • When we are NOT inside a string (i.e. not inside quotes), if we see: - A single quote: We start a string but output a double quote. - A double quote: We start a string (normal JSON string) - A '(' or ')': We output '[' or ']' respectively. - An alphabetic character: we read an entire word token so that if it’s exactly 'True' or 'False' we substitute the proper JSON boolean literal. • When inside a string, we output characters verbatim (handling escapes) so that any content like the characters ( or True that occur inside are not modified. • We then join everything to produce the fixed JSON string, and finally parse it with json.loads. """ ------------------------------------------------ You can run the code, and it will print the fixed JSON values for the given examples.

Extract Code

I extracted the following code from that output: 

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#!/usr/bin/env python3
import json

def fix_json(s):
    """
    Fix a JSON object (given as a string) that might contain:
      - incorrect parenthesis: ( and ) should become [ and ]
      - keys or string values enclosed in single quotes rather than double quotes
      - Python booleans True/False which should be lower-case in JSON
    This function avoids applying changes inside already quoted string contents.
    
    Returns the parsed JSON object.
    """
    out = []
    i = 0
    in_string = False
    # when inside string, store the original quote char so you know when it ends.
    current_quote = None
    escaped = False

    while i < len(s):
        ch = s[i]
        if in_string:
            # We are inside a quoted string so do not change its contents.
            if escaped:
                out.append(ch)
                escaped = False
            else:
                if ch == "\\":
                    out.append(ch)
                    escaped = True
                elif ch == current_quote:
                    # End the string. We always output a double quote.
                    out.append('"')
                    in_string = False
                    current_quote = None
                else:
                    out.append(ch)
            i += 1
        else:
            # not inside a string; check if we are about to start one:
            if ch == '"' or ch == "'":
                # start a quoted string. Always output a double quote.
                in_string = True
                current_quote = ch
                out.append('"')
                i += 1
            elif ch == "(":
                # replace parenthesis with square bracket
                out.append("[")
                i += 1
            elif ch == ")":
                out.append("]")
                i += 1
            elif ch.isalpha():
                # We might be at the start of a literal (e.g., True or False)
                start = i
                while i < len(s) and s[i].isalpha():
                    i += 1
                token = s[start:i]
                if token == "True":
                    out.append("true")
                elif token == "False":
                    out.append("false")
                else:
                    out.append(token)
            else:
                out.append(ch)
                i += 1

    fixed = "".join(out)
    # Now try to parse the fixed JSON string.
    return json.loads(fixed)

Run Code Interpreter

Running the following program: 

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#!/usr/bin/env python3
import json

def fix_json(s):
    """
    Fix a JSON object (given as a string) that might contain:
      - incorrect parenthesis: ( and ) should become [ and ]
      - keys or string values enclosed in single quotes rather than double quotes
      - Python booleans True/False which should be lower-case in JSON
    This function avoids applying changes inside already quoted string contents.
    
    Returns the parsed JSON object.
    """
    out = []
    i = 0
    in_string = False
    # when inside string, store the original quote char so you know when it ends.
    current_quote = None
    escaped = False

    while i < len(s):
        ch = s[i]
        if in_string:
            # We are inside a quoted string so do not change its contents.
            if escaped:
                out.append(ch)
                escaped = False
            else:
                if ch == "\\":
                    out.append(ch)
                    escaped = True
                elif ch == current_quote:
                    # End the string. We always output a double quote.
                    out.append('"')
                    in_string = False
                    current_quote = None
                else:
                    out.append(ch)
            i += 1
        else:
            # not inside a string; check if we are about to start one:
            if ch == '"' or ch == "'":
                # start a quoted string. Always output a double quote.
                in_string = True
                current_quote = ch
                out.append('"')
                i += 1
            elif ch == "(":
                # replace parenthesis with square bracket
                out.append("[")
                i += 1
            elif ch == ")":
                out.append("]")
                i += 1
            elif ch.isalpha():
                # We might be at the start of a literal (e.g., True or False)
                start = i
                while i < len(s) and s[i].isalpha():
                    i += 1
                token = s[start:i]
                if token == "True":
                    out.append("true")
                elif token == "False":
                    out.append("false")
                else:
                    out.append(token)
            else:
                out.append(ch)
                i += 1

    fixed = "".join(out)
    # Now try to parse the fixed JSON string.
    return json.loads(fixed)




answer = fix_json('''{"a": 5, "b": [3, 4]}''')
expected = {"a": 5, "b": [3, 4]}
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'

answer = fix_json('''{'a': 5.0, 'b': (True, 4)}''')
expected = {"a": 5.0, "b": [True, 4]}
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'

answer = fix_json('''{'True': False, 'b()': (3, 4), "c'": []}''')
expected = {"True": False, "b()": [3, 4], "c'": []}
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'
print('All tests passed')
And got the output: All tests passed

Substring Evaluation

Testing if the previous output contains the string All tests passed: True

Initial Query

Write me a python function called fix_json that fixes broken JSON objects, and returns the parsed object. I'll pass the JSON object as a string and it should fix: - Incorect parenthesis, e.g., {"a": (5, 4)} -> {"a": [5, 4]} - Incorrect single quotes, e.g., {'a': 5} -> {"a": 5} - False/True -> false/true Make sure not to break data inside strings! So if there's a True or a ( inside a string keep them the way they are. Also don't break quoted strings

LLM Generation

Query

Write me a python function called fix_json that fixes broken JSON objects, and returns the parsed object. I'll pass the JSON object as a string and it should fix: - Incorect parenthesis, e.g., {"a": (5, 4)} -> {"a": [5, 4]} - Incorrect single quotes, e.g., {'a': 5} -> {"a": 5} - False/True -> false/true Make sure not to break data inside strings! So if there's a True or a ( inside a string keep them the way they are. Also don't break quoted strings

Output

Below is one solution. The main idea is to “tokenize” the input so that we treat quoted strings as opaque (leaving their contents entirely alone), and then do simple text‐replacements on the parts of the JSON that are not inside any quotes. In our example we replace any ( or ) with [ or ] (assuming that any tuple-like syntax was meant to be a JSON list); we also use regular expressions to “fix” the Python-style booleans True/False by replacing them (only where they appear as whole words) with JSON’s lowercase true/false. Finally, if a quoted string is delimited with single quotes (often used in Python dictionaries) we convert it into a proper JSON double‑quoted string (making sure to escape any double quotes that might appear inside). A complete function is shown below: -------------------------------------------------- #!/usr/bin/env python3 import re import json def fix_json(json_str): """ Fixes a JSON string that may contain the following errors: - Tuple-like syntax using parentheses instead of brackets, e.g., {"a": (5, 4)} is converted to {"a": [5, 4]}. - Single-quoted strings for keys or string values, e.g. {'a': 5} becomes {"a": 5}. - Python boolean values True/False are replaced by JSON booleans true/false. IMPORTANT: The function does not modify anything inside a quoted string. That way, a string that says "This (should not) be modified, including 'quoted parts' or True" remains exactly unchanged! Returns the parsed JSON object. """ # This regex will match any quoted string (both "..." and '...') # It uses a non-greedy match and respects escaped quotes. pattern = re.compile(r'"(?:\\.|[^"\\])*"|\'(?:\\.|[^\'\\])*\'') def fix_non_string(text): # Outside of quoted strings, we want to replace: # 1) ( with [ and ) with ] # 2) Python booleans by JSON booleans. fixed = text.replace("(", "[").replace(")", "]") fixed = re.sub(r'\bTrue\b', "true", fixed) fixed = re.sub(r'\bFalse\b', "false", fixed) return fixed fixed_chunks = [] pos = 0 # Iterate over all quoted strings (whether they are double or single quoted). # Everything in between is subject to fixes. for m in pattern.finditer(json_str): # Get the non-string portion before this quoted token: non_string_chunk = json_str[pos:m.start()] fixed_chunks.append(fix_non_string(non_string_chunk)) # Get the quoted token token = m.group(0) # If token starts with a single quote, we want to convert it to a # double-quoted string. if token[0] == "'": # Remove the outer single quotes. inner = token[1:-1] # It is safe to replace " with \" here since the token’s content # is not to be modified otherwise. inner = inner.replace('"', r'\"') new_token = '"' + inner + '"' fixed_chunks.append(new_token) else: # token is already double quoted; leave it as-is. fixed_chunks.append(token) pos = m.end() # Process any remainder after the last quoted string. remainder = json_str[pos:] fixed_chunks.append(fix_non_string(remainder)) fixed_str = "".join(fixed_chunks) # Uncomment the following line to debug the fixed JSON string: # print("Fixed JSON string:", fixed_str) # Parse and return the fixed JSON. return json.loads(fixed_str) # Example usage: if __name__ == "__main__": # These examples show the intended corrections: examples = [ "{'a': (5, 4)}", "{'key': 'This is a (test) with True inside', 'flag': True}", ] for ex in examples: try: obj = fix_json(ex) print("Original:", ex) print("Fixed: ", json.dumps(obj, indent=2)) except Exception as e: print("Failed to fix:", ex, "->", e) -------------------------------------------------- How it works: 1. We compile a regex (pattern) to capture either a double‑quoted string or a single‑quoted string. (The pattern respects escaped quotes too.) 2. We iterate through each match. The text between the matches (the “non‐quoted” parts) is fixed by replacing ( with [ , ) with ], True with true, and False with false. 3. For each quoted token, if its delimiter is a single quote we strip and re‑quote it as a double‑quoted string (escaping any double quotes that appear inside). 4. Finally, we join all the pieces and let json.loads parse it as valid JSON. This solution ensures that no changes occur within any quoted text while still “fixing” the common mistakes.

Extract Code

I extracted the following code from that output: 

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#!/usr/bin/env python3
import re
import json

def fix_json(json_str):
    """
    Fixes a JSON string that may contain the following errors:
      - Tuple-like syntax using parentheses instead of brackets,
        e.g., {"a": (5, 4)} is converted to {"a": [5, 4]}.
      - Single-quoted strings for keys or string values, e.g. {'a': 5} 
        becomes {"a": 5}.
      - Python boolean values True/False are replaced by JSON 
        booleans true/false.
    
    IMPORTANT: The function does not modify anything inside a quoted 
    string. That way, a string that says "This (should not) be modified,
    including 'quoted parts' or True" remains exactly unchanged!
    
    Returns the parsed JSON object.
    """
    # This regex will match any quoted string (both "..." and '...')
    # It uses a non-greedy match and respects escaped quotes.
    pattern = re.compile(r'"(?:\\.|[^"\\])*"|\'(?:\\.|[^\'\\])*\'')
    
    def fix_non_string(text):
        # Outside of quoted strings, we want to replace:
        # 1) ( with [ and ) with ]
        # 2) Python booleans by JSON booleans.
        fixed = text.replace("(", "[").replace(")", "]")
        fixed = re.sub(r'\bTrue\b', "true", fixed)
        fixed = re.sub(r'\bFalse\b', "false", fixed)
        return fixed

    fixed_chunks = []
    pos = 0
    # Iterate over all quoted strings (whether they are double or single quoted).
    # Everything in between is subject to fixes.
    for m in pattern.finditer(json_str):
        # Get the non-string portion before this quoted token:
        non_string_chunk = json_str[pos:m.start()]
        fixed_chunks.append(fix_non_string(non_string_chunk))
        
        # Get the quoted token
        token = m.group(0)
        # If token starts with a single quote, we want to convert it to a 
        # double-quoted string.
        if token[0] == "'":
            # Remove the outer single quotes.
            inner = token[1:-1]
            # It is safe to replace " with \" here since the token’s content
            # is not to be modified otherwise.
            inner = inner.replace('"', r'\"')
            new_token = '"' + inner + '"'
            fixed_chunks.append(new_token)
        else:
            # token is already double quoted; leave it as-is.
            fixed_chunks.append(token)
        
        pos = m.end()

    # Process any remainder after the last quoted string.
    remainder = json_str[pos:]
    fixed_chunks.append(fix_non_string(remainder))
    
    fixed_str = "".join(fixed_chunks)
    
    # Uncomment the following line to debug the fixed JSON string:
    # print("Fixed JSON string:", fixed_str)
    
    # Parse and return the fixed JSON.
    return json.loads(fixed_str)

Run Code Interpreter

Running the following program: 

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#!/usr/bin/env python3
import re
import json

def fix_json(json_str):
    """
    Fixes a JSON string that may contain the following errors:
      - Tuple-like syntax using parentheses instead of brackets,
        e.g., {"a": (5, 4)} is converted to {"a": [5, 4]}.
      - Single-quoted strings for keys or string values, e.g. {'a': 5} 
        becomes {"a": 5}.
      - Python boolean values True/False are replaced by JSON 
        booleans true/false.
    
    IMPORTANT: The function does not modify anything inside a quoted 
    string. That way, a string that says "This (should not) be modified,
    including 'quoted parts' or True" remains exactly unchanged!
    
    Returns the parsed JSON object.
    """
    # This regex will match any quoted string (both "..." and '...')
    # It uses a non-greedy match and respects escaped quotes.
    pattern = re.compile(r'"(?:\\.|[^"\\])*"|\'(?:\\.|[^\'\\])*\'')
    
    def fix_non_string(text):
        # Outside of quoted strings, we want to replace:
        # 1) ( with [ and ) with ]
        # 2) Python booleans by JSON booleans.
        fixed = text.replace("(", "[").replace(")", "]")
        fixed = re.sub(r'\bTrue\b', "true", fixed)
        fixed = re.sub(r'\bFalse\b', "false", fixed)
        return fixed

    fixed_chunks = []
    pos = 0
    # Iterate over all quoted strings (whether they are double or single quoted).
    # Everything in between is subject to fixes.
    for m in pattern.finditer(json_str):
        # Get the non-string portion before this quoted token:
        non_string_chunk = json_str[pos:m.start()]
        fixed_chunks.append(fix_non_string(non_string_chunk))
        
        # Get the quoted token
        token = m.group(0)
        # If token starts with a single quote, we want to convert it to a 
        # double-quoted string.
        if token[0] == "'":
            # Remove the outer single quotes.
            inner = token[1:-1]
            # It is safe to replace " with \" here since the token’s content
            # is not to be modified otherwise.
            inner = inner.replace('"', r'\"')
            new_token = '"' + inner + '"'
            fixed_chunks.append(new_token)
        else:
            # token is already double quoted; leave it as-is.
            fixed_chunks.append(token)
        
        pos = m.end()

    # Process any remainder after the last quoted string.
    remainder = json_str[pos:]
    fixed_chunks.append(fix_non_string(remainder))
    
    fixed_str = "".join(fixed_chunks)
    
    # Uncomment the following line to debug the fixed JSON string:
    # print("Fixed JSON string:", fixed_str)
    
    # Parse and return the fixed JSON.
    return json.loads(fixed_str)




answer = fix_json('''{"a": 5, "b": [3, 4]}''')
expected = {"a": 5, "b": [3, 4]}
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'

answer = fix_json('''{'a': 5.0, 'b': (True, 4)}''')
expected = {"a": 5.0, "b": [True, 4]}
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'

answer = fix_json('''{'True': False, 'b()': (3, 4), "c'": []}''')
expected = {"True": False, "b()": [3, 4], "c'": []}
assert answer == expected, f'Wrong answer; got {answer} instead of {expected}'
print('All tests passed')
And got the output: All tests passed

Substring Evaluation

Testing if the previous output contains the string All tests passed: True