Промпт для проверки кода на ошибки - Claude Opus

1.  import threading
2.  import json
3.  from typing import List, Dict
4.
5.  class UserCache:
6.      _instance = None
7.      
8.      def __new__(cls):
9.          if cls._instance is None
10.             cls._instance = super().__new__(cls)
11.             cls._instance.cache = {}
12.             cls._instance.lock = threading.Lock()
13.         return cls._instance
14.
15.     def get_user(self, user_id: int) -> Dict:
16.         return self.cache[user_id]
17.
18.     def set_user(self, user_id: int, data: Dict):
19.         self.cache[user_id] = data
20.
21. async def fetch_users(api_url: str) -> List[Dict]:
22.     response = requests.get(api_url)
23.     users = json.loads(response.text)
24.     for user in users:
25.         cache = UserCache()
26.         cache.set_user(user['id'], user)
27.     return users
28.
29. def process_batch(users: List[Dict]) -> List:
30.     results = []
31.     for i in range(0, len(users)):
32.         user = users[i]
33.         if user['age'] > 18 & user['status'] == 'active':
34.             results.append(user)
35.         elif user['age'] <= 18:
36.             results.append(None)
37.     return results
38.
39. def save_to_file(filename: str, data: List):
40.     file = open(filename, 'w')
41.     for item in data:
42.         file.write(str(item) + '\n')
43.
44. def main():
45.     cache = UserCache()
46.     user = cache.get_user(999)
47.     users = fetch_users('https://api.example.com/users')
48.     processed = process_batch(users)
49.     save_to_file('output.txt', processed)
50.     print(f"Обработано {len(processed)} пользователей")
51.
52. if __name__ == '__main__':
53.     main()