文本处理实例

三个脚本文件

①、创建表

#创建表

from sqlalchemy import Column, MetaData, Table
from sqlalchemy import Integer
from sqlalchemy import String
from sqlalchemy import create_engine


engine = create_engine('mysql+pymysql://jiang:[email protected]/data')

metadata = MetaData(engine)

dictionary = Table('dictionary', metadata,
 Column('id', Integer, primary_key=True),
 Column('key', String(50)),
 Column('value', String(50))
 )
student = Table('student', metadata,
 Column('id', Integer, primary_key=True),
 Column('name', String(20)),
 Column('gender', String(2)),
 Column('age', String(5))
 )
metadata.create_all(engine)

②、将处理完的数据插入表中

#在表中插入数据

import codecs
from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

engine = create_engine('mysql+pymysql://jiang:[email protected]:3306/data?charset=utf8')
DBSession = sessionmaker(bind=engine)
session = DBSession()
Base = declarative_base()


class InsertDatas(Base):
 __tablename__= 'dictionary'
 id = Column(Integer, primary_key=True)
 key = Column(String(50))
 value = Column(String(50))

#处理数据并插入表中
class OptDate(object):
 def __init__(self, datafile):
 self.datafile = datafile

 def makedatatostr(self):
 with codecs.open("dictionary.txt", encoding='utf-8') as file:
 for (num, value) in enumerate(file):
 line = value.strip().split()
 diction = InsertDatas(id=num+1, key=line[0], value=line[1])
 session.add(diction)
 session.commit()


if __name__ == '__main__':
 optdate = OptDate("dictionary.txt")
 optdate.makedatatostr()
 session.close()

③、查询表中的数据

#查询数据

from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

engine = create_engine('mysql+pymysql://jiang:[email protected]:3306/data?charset=utf8')
DBSession = sessionmaker(bind=engine)
session = DBSession()
Base = declarative_base()


class InsertDatas(Base):
 __tablename__= 'dictionary'
 id = Column(Integer, primary_key=True)
 key = Column(String(50))
 value = Column(String(50))

a = session.query(InsertDatas).filter(InsertDatas.id<10).all()
for i in a:
 print(i.id)
 print(i.key)
 print(i.value)

word = input("please input your a word:")
result =session.query(InsertDatas).filter(InsertDatas.key.like("%{0}%".format(word))).all() #查询和输入有关的词
for each in result:
 print(each.id, each.key, each.value)

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