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

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

Output

To solve this problem, we need to write a Python function called `fix_json` that corrects common issues in broken JSON strings. The function should handle three specific problems: incorrect use of parentheses for arrays, single quotes instead of double quotes, and incorrect casing for boolean values. ### Approach The approach involves three main steps to address each of the issues mentioned: 1. **Replace Single Quotes with Double Quotes**: Convert single-quoted strings to double-quoted strings, ensuring any internal single quotes are properly unescaped and internal double quotes are escaped. 2. **Correct Boolean Values**: Replace Python-style boolean values `True` and `False` with their JSON counterparts `true` and `false`, ensuring these replacements only occur outside of string literals. 3. **Convert Parentheses to Brackets**: Replace parentheses `()` with square brackets `[]` to denote arrays, ensuring these replacements only occur outside of string literals. ### Solution Code 

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
import re
import json

def fix_json(json_str):
    # Step 1: Replace single-quoted strings with double-quoted ones
    def replace_single_quotes(match):
        content = match.group(1)
        content = content.replace("\\'", "'")  # Unescape escaped single quotes
        content = content.replace('"', '\\"')   # Escape double quotes within the string
        return f'"{content}"'
    
    json_str = re.sub(r"'((?:[^'\\]|\\.)*)'", replace_single_quotes, json_str)
    
    # Step 2: Replace True/False with true/false in non-string parts
    parts = re.split(r'("[^"\\]*(?:\\.[^"\\]*)*")', json_str)
    for i in range(len(parts)):
        if i % 2 == 0:  # Non-string parts
            parts[i] = re.sub(r'\bTrue\b', 'true', parts[i])
            parts[i] = re.sub(r'\bFalse\b', 'false', parts[i])
    json_str = ''.join(parts)
    
    # Step 3: Replace parentheses with brackets in non-string parts
    parts = re.split(r'("[^"\\]*(?:\\.[^"\\]*)*")', json_str)
    for i in range(len(parts)):
        if i % 2 == 0:  # Non-string parts
            parts[i] = parts[i].replace('(', '[').replace(')', ']')
    json_str = ''.join(parts)
    
    # Parse the corrected JSON
    return json.loads(json_str)
### Explanation 1. **Single Quotes to Double Quotes**: The regular expression `r"'((?:[^'\\]|\\.)*)'"` matches single-quoted strings. The replacement function handles escaping internal double quotes and unescaping internal single quotes, then wraps the result in double quotes. 2. **Boolean Values Correction**: The JSON string is split into parts that are either inside or outside of double-quoted strings. Boolean values are replaced only in non-string parts using regular expressions to ensure whole-word matches. 3. **Parentheses to Brackets**: The JSON string is again split into parts, and parentheses in non-string parts are replaced with square brackets to correctly denote arrays. This approach ensures that each transformation is applied correctly without affecting the content within string literals, thereby fixing the JSON string while preserving its structure and content.

Extract Code

I extracted the following code from that output: 

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
import re
import json

def fix_json(json_str):
    # Step 1: Replace single-quoted strings with double-quoted ones
    def replace_single_quotes(match):
        content = match.group(1)
        content = content.replace("\\'", "'")  # Unescape escaped single quotes
        content = content.replace('"', '\\"')   # Escape double quotes within the string
        return f'"{content}"'
    
    json_str = re.sub(r"'((?:[^'\\]|\\.)*)'", replace_single_quotes, json_str)
    
    # Step 2: Replace True/False with true/false in non-string parts
    parts = re.split(r'("[^"\\]*(?:\\.[^"\\]*)*")', json_str)
    for i in range(len(parts)):
        if i % 2 == 0:  # Non-string parts
            parts[i] = re.sub(r'\bTrue\b', 'true', parts[i])
            parts[i] = re.sub(r'\bFalse\b', 'false', parts[i])
    json_str = ''.join(parts)
    
    # Step 3: Replace parentheses with brackets in non-string parts
    parts = re.split(r'("[^"\\]*(?:\\.[^"\\]*)*")', json_str)
    for i in range(len(parts)):
        if i % 2 == 0:  # Non-string parts
            parts[i] = parts[i].replace('(', '[').replace(')', ']')
    json_str = ''.join(parts)
    
    # Parse the corrected JSON
    return json.loads(json_str)

Run Code Interpreter

Running the following program: 

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
import re
import json

def fix_json(json_str):
    # Step 1: Replace single-quoted strings with double-quoted ones
    def replace_single_quotes(match):
        content = match.group(1)
        content = content.replace("\\'", "'")  # Unescape escaped single quotes
        content = content.replace('"', '\\"')   # Escape double quotes within the string
        return f'"{content}"'
    
    json_str = re.sub(r"'((?:[^'\\]|\\.)*)'", replace_single_quotes, json_str)
    
    # Step 2: Replace True/False with true/false in non-string parts
    parts = re.split(r'("[^"\\]*(?:\\.[^"\\]*)*")', json_str)
    for i in range(len(parts)):
        if i % 2 == 0:  # Non-string parts
            parts[i] = re.sub(r'\bTrue\b', 'true', parts[i])
            parts[i] = re.sub(r'\bFalse\b', 'false', parts[i])
    json_str = ''.join(parts)
    
    # Step 3: Replace parentheses with brackets in non-string parts
    parts = re.split(r'("[^"\\]*(?:\\.[^"\\]*)*")', json_str)
    for i in range(len(parts)):
        if i % 2 == 0:  # Non-string parts
            parts[i] = parts[i].replace('(', '[').replace(')', ']')
    json_str = ''.join(parts)
    
    # Parse the corrected JSON
    return json.loads(json_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