抱歉,如果这个问题很愚蠢,我已经学了2天了python
我一直想弄明白为什么我的python
脚本可以运行SELECT
语句,但不能运行UPDATE
或DELETE
语句。你知道吗
我相信这将是一个MySQL
问题,而不是一个Python
问题,但我不再能够排除故障
检查.py
import re
import time
import json
import MySQLdb
import requests
from array import *
conn = MySQLdb.connect([redacted])
cur = conn.cursor()
sql1 = "SELECT pkey,pmeta FROM table1 WHERE proced = 0 LIMIT 1"
cur.execute(sql1)
row = cur.fetchone()
while row is not None:
print "row is: ",row[0]
rchk = [
r"(SHA256|MD5)",
r"(abc|def)"
]
for trigger in rchk:
regexp = re.compile(trigger)
pval = row[1]
if regexp.search(pval) is not None:
print "matched on: ",row[0]
sql2 = """INSERT INTO table2 (drule,dval,dmeta) VALUES('%s', '%s', '%s')"""
try:
args2 = (trigger, pval, row[1])
cur.execute(sql2, args2)
print(cur._last_executed)
except UnicodeError:
print "pass-uni"
break
else:
pass
sql3 = """UPDATE table1 SET proced=1 WHERE pkey=%s"""
args3 = row[0]
cur.execute(sql3, args3)
print(cur._last_executed)
row = cur.fetchone()
sql3 = """DELETE FROM table1 WHERE proced=1 AND last_update < (NOW() - INTERVAL 6 MINUTE)"""
cur.execute(sql3)
print(cur._last_executed)
cur.close()
conn.close()
print "Finished"
以及实际(和令人惊讶的预期)输出:
输出
scrape@:~/python$ python pcheck.py
row is: 0GqQ0d6B
UPDATE table1 SET proced=1 WHERE pkey='0GqQ0d6B'
DELETE FROM table1 WHERE proced=1 AND last_update < (NOW() - INTERVAL 6 MINUTE)
Finished
但是,数据库没有更新。我检查了查询是否进入MySQL:
MySQL日志
"2015-12-14 22:53:56","localhost []","110","0","Query","SELECT `pkey`,`pmeta` FROM `table1` WHERE `proced`=0 LIMIT 200"
"2015-12-14 22:53:57","localhost []","110","0","Query","UPDATE `table1` SET `proced`=1 WHERE `pkey`='0GqQ0d6B'"
"2015-12-14 22:53:57","localhost []","110","0","Query","DELETE FROM table1 WHERE proced=1 AND last_update < (NOW() - INTERVAL 6 MINUTE)"
但是,第0gq0d6b行的proced
值仍然不是1
如果我通过Sqlyog(以用户身份登录)进行相同的查询,查询将按预期工作。你知道吗
这类问题可能非常令人沮丧。你确定这里没有多余的空间?你知道吗
也许你可以把这句话说出来
部分,并在周围撒上一些打印语句?你知道吗
作为评论员,Bob Dylan能够推断出更改后需要提交的游标。你知道吗
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