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Question

我在postgres数据库中创建了一个表：

CREATE TABLE "DataSource"(
  src_id character varying(20) NOT NULL,
  src_name character varying(20),
  password character varying(25),
  host character varying(30),
  created_date date,
  user_name character varying(30),
  src_type character varying(15),
  db_name character varying(20) NOT NULL,
  port numeric(32,0),
  CONSTRAINT "DataSource_pkey" PRIMARY KEY (src_id, db_name)
)

还在python中创建了一个方法，用于插入上表：

def insertDataSource(srcName, srcType ,owner, src_password, location, creationDate,db_name,port_no='DEFAULT'):
    srcId=idGeneratorforData(srcName)# idGeneratorforData() method generate a id string value 
    conn = get_connect()
    if conn:
         cur = conn.cursor()#cursor_factory=psycopg2.extras.RealDictCursor)
    else:
         print "Failed to connect..."
    cur.execute('''insert into "DataSource"("src_id","user_name","src_name","created_date","src_type","password","host", "db_name", "port") values ('%s','%s','%s','%s','%s','%s','%s','%s')''' %(srcId,owner,srcName,creationDate,srcType, src_password, location, db_name, port_no))
    conn.commit()
    cur.close()
    conn.close()

现在，当我尝试将此方法称为

时

insertDataSource("postgres", "Structured", "postgres", "root", "localhost", "12-10-2015", "postgres", "5432")

然后抛出TypeError ::

cur.execute('''insert into "DataSource"("src_id","user_name","src_name","created_date","src_type","password","host", "db_name", "port") values ('%s','%s','%s','%s','%s','%s','%s','%s')''' %(srcId,owner,srcName,creationDate,srcType, src_password, location, db_name, port_no))

TypeError：并非在字符串格式化期间转换所有参数

我还尝试传递端口号的DEFAULT值，代码仍然抛出相同的错误，但是当我通过SQL提示触发了相同的查询时..它可以工作。

我无法理解为什么会出现这个问题......，相同的代码在今天之前工作正常......