# from typing import Text

# import sqlalchemy

# from sqlalchemy import create_engine

# from sqlalchemy.orm import sessionmaker

# from sqlalchemy import Column, Integer, String

# engine = create_engine('sqlite:///info.db')

# if not engine.dialect.has_table(engine, 'datas'):

# metadata = sqlalchemy.schema.MetaData(engine)

# sqlalchemy.schema.Table('datas', metadata,

# Column('post_id', Integer, primary_key=True, autoincrement=True),

# Column('url', String(256)),

# # Column('id_', Integer),

# Column('author_name', Integer),

# Column('post_time', String(256)),

# Column('content', Text),

# Column('like_num', Integer)

# )

# metadata.create_all()

# Session = sessionmaker(bind=engine)

# session = Session()