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Description
@contextmanager
def get_conn(**kwargs):
conn = pymysql.connect(**kwargs)
try:
yield conn
finally:
conn.close()
示例里面使用contextmanager创建的上下文,为什么return的是conn,而不是conn.cursor(),下面调用的时候也没创建游标就直接建库了,可以这样吗
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