'BlockingConnectionPool' object has no attribute '_lock'

[WenminZhao]

Version: redis-py 5.2.1

Platform: MacOS 15.1.1 (24B91)

Description: I have this issue when using django and redis-py.

CACHE settings are:

CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "OPTIONS": {
            "CONNECTION_POOL_CLASS": "redis.BlockingConnectionPool",
            "CONNECTION_POOL_KWARGS": {
                "max_connections": 50,
                "timeout": 20,
                "protocol": 3,
                "cache_config": CacheConfig(),
            },
            "PICKLE_VERSION": -1,
        },
       ...
     }
}

StackTrace is

 File "/.venv/lib/python3.11/site-packages/django_redis/client/default.py", line 258, in get
    value = client.get(key)
            ^^^^^^^^^^^^^^^
  File "/.venv/lib/python3.11/site-packages/redis/commands/core.py", line 1822, in get
    return self.execute_command("GET", name, keys=[name])
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.venv/lib/python3.11/site-packages/redis/client.py", line 559, in execute_command
    return self._execute_command(*args, **options)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.venv/lib/python3.11/site-packages/redis/client.py", line 565, in _execute_command
    conn = self.connection or pool.get_connection(command_name, **options)
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.venv/lib/python3.11/site-packages/redis/connection.py", line 1634, in get_connection
    connection = self.make_connection()
                 ^^^^^^^^^^^^^^^^^^^^^^
  File "/.venv/lib/python3.11/site-packages/redis/connection.py", line 1599, in make_connection
    self.connection_class(**self.connection_kwargs), self.cache, self._lock
                                                                 ^^^^^^^^^^

It seems that in BlockingConnectionPool, self._lock is not set in the init method. The base class ConnectionPool set it in the reset method: https://github.com/redis/redis-py/blob/v5.2.1/redis/connection.py#L1346, while BlockingConnectionPool doesn't: https://github.com/redis/redis-py/blob/v5.2.1/redis/connection.py#L1571