我试图使用psycopg2将列表传递到postgres表中。我一直遇到异常:
File "c:/Python27/Projects/Newsletter/newsletter.py", line 148, in <module>
insert_pg(listString)
File "c:\Python27\Projects\Newsletter\pg.py", line 23, in insert_pg
print('pggggg', error)
IOError: [Errno 0] Error
数据非常混乱(原谅我),但这里是代码的片段。我是从newsletter.py运行的:
if __name__ == '__main__':
dataList = [today, str(int(round(float(str(spxprice.replace(',', '')))))), str(int(round(float(spxchg)))), str(int(round(float(spxpchg)))), str(int(round(float(str(dowprice.replace(',', '')))))), dowpchg, str(int(round(float(dowchg)))), str(int(round(float(str(ndxprice.replace(',', '')))))), ndxpchg, str(int(round(float(ndxchg)))), ''.join(oilPrice[4]), ''.join(getOilChg), ''.join(getOilPct), dayName]
listString = ', '.join(dataList)
insert_pg(listString)
这是pg.py,我从
导入insert_pgimport psycopg2
from config import config
import sys
def insert_pg(thedata):
sql = ("""insert into prices values (%s);""" % thedata)
conn = None
try:
# read database configuration
params = config()
# connect to the PostgreSQL database
conn = psycopg2.connect(**params)
# create a new cursor
cur = conn.cursor()
# execute the INSERT statement
cur.execute(sql)
conn.commit()
cur.close()
print 'Success.'
except (Exception, psycopg2.DatabaseError) as error:
print('pggggg', error)
finally:
if conn is not None:
conn.close()
打印时sql的输出:
插入价格值(02/14 / 201,2675,12,0,24698,0.23,58,7074,0.86,60,59.09,-0.06,-0.10%,星期三);
不确定我在哪里出错了。数据库连接正常。有什么想法吗?
答案 0 :(得分:1)
首先,您不使用绑定变量,这是不好的做法,因为这会导致SQL注入。你应该做的是:
cur.execute('INSERT INTO PRICES(col1, col2, ...) VALUES(%(val1)s, %(val2)s, ...)', kwargs)
其中kwargs
是与列名和值对应的键/值对的字典。这是正确的方法。
答案 1 :(得分:0)
问题可能与您单独打印错误的尝试有关。
尝试替换:
print('pggggg', error)
与raise
。