使用sqlalchemy的增刪改查

from connect import base,session

from sqlalchemy import column,integer,string,datetime,boolean
from datetime import datetime
class
user
(base):
__tablename__='user'
#__tablename__定義表名字
id = column(integer,primary_key=true,autoincrement=true)
username = column(string(20),nullable=false)
password = column(string(50))
createtime = column(datetime,default=datetime.now())
_locked = column(boolean,default=false,nullable=false)
@classmethod   #查詢所有的靜態類方法
defall
(cls):
return session.query(cls).all()
@classmethod   #filter_by所有的靜態類方法id
defby_id
(cls,id):
return session.query(cls).filter_by(id=id).all()
@classmethod    #縮寫查詢的username的方式
defby_name
(cls,name):
return session.query(cls).filter_by(username=name).all()
@property
deflocked
(self):
return self._locked
def__repr__
(self):
return
"" % (
self.id ,
self.username,
self.password,
self.createtime,
self._locked
)#定義原生型別，不定義會返回乙個物件
if __name__=='__main__':
base.metadata.create_all()

@classmethod   #查詢所有的靜態類方法

defall
(cls):
return session.query(cls).all()
@classmethod   #filter_by所有的靜態類方法id
defby_id
(cls,id):
return session.query(cls).filter_by(id=id).all()
@classmethod    #縮寫查詢的username的方式
defby_name
(cls,name):
return session.query(cls).filter_by(username=name).all()
@property
deflocked
(self):
return self._locked

from user_modules import user,session

defadd_user
():# person =user(username='dandan',password='abc123')
# session.add(person)
session.add_all(
[user(username='tobee',password='234qwe'),
user(username='no1',password='zzz123')
]) #新增多個元素
session.commit()
defsearch_user
():    row = session.query(user).all()
# print(row)
row = session.query(user).filter_by(id=1).all()   #filter_by與filter的區別
# print(row)
row = session.query(user).filter(user.username=='no1')
print(row[0].locked)
defupdate_user
():    row = session.query(user).filter_by(username='dandan').update()
session.commit()
defdelete_user
():    row = session.query(user).filter_by(username='no1')[0]
print(row)
session.delete(row)
session.commit()
if __name__=="__main__":
# add_user()
# search_user()
# update_user()
delete_user()
# print(user.all())
# print(user.by_id(1))
print(user.by_name('no1'))
# print(dir(row[0]))

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