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import sqlsoup | |
from sqlalchemy import create_engine | |
from sqlalchemy.orm import scoped_session, sessionmaker | |
def singleton(cls, *args, **kwargs): | |
instances = {} | |
def get_instance(): | |
if cls not in instances: | |
instances[cls] = cls(*args, **kwargs) | |
return instances[cls] | |
return get_instance | |
@singleton | |
class Engine(object): | |
def __new__(cls, *args, **kwargs): | |
config = { | |
'host': 'localhost', | |
'database': 'demo', | |
'username': 'root', | |
'password': '123456', | |
} | |
_tpl = 'mysql://{username}:{password}@{host}/{database}?charset=utf8' | |
connect_url = _tpl.format(**config) | |
engine = create_engine(connect_url, | |
strategy='threadlocal', | |
pool_size=5, | |
pool_recycle=1800, | |
encoding='utf-8', | |
max_overflow=2) | |
return engine | |
db = sqlsoup.SQLSoup(Engine(), session=scoped_session(sessionmaker(autoflush=False, | |
expire_on_commit=False, | |
autocommit=True))) |
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