如何将这个复杂的字符串转换为键值中带有"“的JSON？

import json

def convert_string_to_json(input_string):
    # 处理字符串，提取键值对信息
    # 这里假设字符串的格式为 key1:value1,key2:value2,...
    pairs = input_string.split(',')
    
    # 构建空的JSON对象
    json_obj = {}
    
    # 遍历键值对，添加到JSON对象中
    for pair in pairs:
        key, value = pair.split(':')
        json_obj[key.strip()] = value.strip().replace('"', '\\"')
    
    # 将JSON对象转换为字符串形式
    json_string = json.dumps(json_obj)
    
    return json_string

# 示例输入字符串
input_string = 'name:John,age:25,city:"New York",occupation:"Software Engineer"'

# 转换为带有"“的JSON字符串
json_string = convert_string_to_json(input_string)
print(json_string)

{"name": "John", "age": "25", "city": "\"New York\"", "occupation": "\"Software Engineer\""}