1.写了一段使用SQLAlchemy 编程的代码，程序本身没问题，就是访问数据库时产生一个错误提示，但是即使有错误代码页能正常运行，操作结果也正确。这个错误是关于代码编码方式的错误，但是调了很长时间这个错误就是不能消除，求解救2.这里是代码：（1）orm.py
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column,Integer,String
Base = declarative_base()
class Account(Base):
tablename = u'account'
id = Column(Integer,primary_key = True)
salary = Column(Integer)
username = Column(String(20),nullable = False)
password = Column(String(200),nullable = False)
title = Column(String(50))
def is_active(self):
return True
def get_id(self):
return self.id
def is_authenticated(self):
return True
def is_anonymous(self):
return False
from sqlalchemy import create_engine
from sqlalchemy.orm import scoped_session,sessionmaker
db_connect_string = 'mysql://root:admin@localhost:3306/test_database?charset=utf8'
ssl_args = {'ssl':{'cert':'/home//ssl/client-cert.pem',
'key':"/home/shouse/ssl/client-cert.pem",
'ca':'/home/shouse/ssl/ca-cert.pem'}}
engine = create_engine(db_connect_string,connect_args = ssl_args)
SessionType = scoped_session(sessionmaker(bind = engine,expire_on_commit = False))
def GetSession():
return SessionType()
from contextlib import contextmanager
@contextmanager
def session_scope():
session = GetSession()
try:
yield session
session.commit()
except:
session.rollback()
raise
finally:
session.close()
（2）databaseoperation.py代码：
-*- coding:utf-8 -*-
import orm
from sqlalchemy import or_
def InsertAccount(user,password,title,salary):
with orm.session_scope() as session:
account = orm.Account(username = user,password =password,title = title,salary = salary)
session.add(account)
def GetAccount(id=None,username = None):
with orm.session_scope() as session:
return session.query(orm.Account).filter(or_(orm.Account.id==id,orm.Account.username==username)).first()
def Delete(username):
with orm.session_scope() as session:
account = GetAccount(username = username)
if account:
session.delete(account)
def Update(id,username,password,title,salary):
with orm.session_scope() as session:
account = session.query(orm.Account).filter(orm.Account.id==id).first()
if not account:return
account.username=username
account.password=password
account.title = title
account.salary = salary
InsertAccount('Lliy','123','System Manager',3000)
InsertAccount('Rebeca Li','12221','Accountant',3000)
GetAccount(2)
Delete('David Li')
Update(1,'admin','1111','System Admin',2000)
3.错误提示：
4.数据库截图
