我在我的覆盆子pi上运行python / mysqldb时遇到了一些麻烦。这是一个非常简单的脚本,所以我不确定我缺少什么。 “SELECT * FROM ...”运行没有问题,但我似乎无法使用新值更新表。脚本运行时没有抛出错误,但是当我按ctrl-C时,它给了我这个:
异常_mysql_exceptions.ProgrammingError:(2014,“命令不同步;你现在无法运行此命令”)绑定方法DictCursor .__ del of MySQLdb.cursors.DictCursor object at 0x19dfd90
这是我的剧本:
dhost = "localhost"
duser = "root"
dname = "rpi"
dpass = "datPassword"
import MySQLdb
try:
con = MySQLdb.connect(dhost,duser,dpass,dname);
cur = con.cursor(MySQLdb.cursors.DictCursor)
except MySQLdb.Error, e:
print "Error %d: %s" % (e.args[0],e.args[1])
sys.exit(1)
def websiteToSensor():
cur.execute("SELECT * FROM homeauto WHERE changedby = 'website'")
rows = cur.fetchall()
for row in rows:
cur.execute("UPDATE homeauto SET changedby = 'script' WHERE id = '%s'",(row["id"]))
return
while True:
websiteToSensor()
有没有人知道我的桌子没有更新的原因?谢谢!
*** 编辑:解决方案 * **
感谢Martijn Pieters,这是我的新网站Tosensor()代码:
def websiteToSensor():
cur = con.cursor(MySQLdb.cursors.DictCursor)
cur.execute("SELECT * FROM homeauto WHERE changedby = 'website'")
rows = cur.fetchall()
num = int(cur.rowcount)
if num > 0:
for row in rows:
cur.execute("UPDATE homeauto SET changedby = 'script' WHERE id = '%s'",(row["id"]))
con.commit()
cur.close()
con.commit()
else:
cur.close()
con.commit()
return
答案 0 :(得分:1)
尝试提交更改:
def websiteToSensor():
cur.execute("SELECT * FROM homeauto WHERE changedby = 'website'")
rows = cur.fetchall()
for row in rows:
cur.execute("UPDATE homeauto SET changedby = 'script' WHERE id = '%s'",(row["id"]))
con.commit()
return