singleton_meta.py
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async_pool.py
retry_decorator.py
singleton_meta.py
context_manager.py
dataclass_config.py
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singleton_meta.py
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class SingletonMeta(type):↵
_instances = {}↵
↵
def __call__(cls, *args, **kwargs):↵
if cls not in cls._instances:↵
cls._instances[cls] = super().__call__(*args, **kwargs)↵
return cls._instances[cls]↵
↵
class Database(metaclass=SingletonMeta):↵
def __init__(self):↵
self.conn = connect()
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