以下代码中
报错
Connection' object has no attribute 'raw_connection'
不知道，怎么修改好呢。。。。。。------------------------------------------
import dataset
from pandas.io.sql import read_sql
from pandas.io.sql import to_sql
import statsmodels.api as sm

# 创建数据库连接
db = dataset.connect('sqlite:///:memory:')
# 创建books表
table = db["books"]
# 添加数据,在调用insert时会自动添加表模式
table.insert(dict(title="Numpy Beginner's guide", author='Ivan Idris'))
table.insert(dict(title="Numpy Cookbook", author='Ivan Idris'))
table.insert(dict(title="Learning Numpy", author='Ivan Idris'))
# 使用pandas的read_sql查询数据
print(read_sql('SELECT * FROM books', db.executable.raw_connection()))

# 加载数据
data_loader = sm.datasets.sunspots.load_pandas()
df = data_loader.data
to_sql(df, "sunspots", db.executable.raw_connection())
table = db['sunspots']

# 查询前5条数据
for row in table.find(_limit=5):
    print(row)
print("Table", db.tables)