Question

def retCursor():
    host = "localhost"
    user = "disappearedng"

    db = "gupan_crawling3"
    conn = MySQLdb.connect( host=host, user=user, passwd=passwd, db=db)
    cursor = conn.cursor()
    return cursor
singleCur = retCursor()


def checkTemplateBuilt(netlocH):
    """Used by crawler specifically, this check directly whether template has been built"""
    singleCur.execute( """SELECT templateBuilt FROM templateEnough WHERE netloc=%s""", [ netlocH])
    r = singleCur.fetchone()
    if r:
        if bool( r[0]):
            return True
    return False

大家好，我目前正在使用MySQLdb。出于某种原因，在运行了大约30分钟后我的应用程序完全停止了。看来这个功能阻止了我。（不知道是什么原因）

Traceback (most recent call last):
  File "/usr/lib/python2.6/multiprocessing/process.py", line 231, in _bootstrap
    self.run()
  File "/mount/950gb/gupan5/disappearedng_temp/code_temp_NEWBRANCH/gupan5-yahoo/crawling/templateCrawling/TemplateCrawler/crawler/crawler.py", line 117, in run
    self.get_check_put()
  File "/mount/950gb/gupan5/disappearedng_temp/code_temp_NEWBRANCH/gupan5-yahoo/crawling/templateCrawling/TemplateCrawler/crawler/crawler.py", line 66, in get_check_put
    if not self.checkLinkCrawlability(linkS, priority):
  File "/mount/950gb/gupan5/disappearedng_temp/code_temp_NEWBRANCH/gupan5-yahoo/crawling/templateCrawling/TemplateCrawler/crawler/crawler.py", line 53, in checkLinkCrawlability
    if checkTemplateBuilt( getNetLoc( link)):
  File "/mount/950gb/gupan5/disappearedng_temp/code_temp_NEWBRANCH/gupan5-yahoo/crawling/templateCrawling/TemplateCrawler/publicapi/publicfunc.py", line 71, in checkTemplateBuilt
    singleCur.execute( """SELECT templateBuilt FROM templateEnough WHERE netloc=%s""", [ netlocH])
  File "/var/lib/python-support/python2.6/MySQLdb/cursors.py", line 153, in execute
    r = self._query(query)
KeyboardInterrupt

顺便说一下，这是表：

CREATE TABLE templateEnough( 
    `netloc` INT(32) unsigned NOT NULL,   
    `count` SMALLINT(32) unsigned NOT NULL,
    `templateBuilt` TINYINT(1) unsigned DEFAULT 0 NOT NULL,
    PRIMARY KEY ( netloc )
) ENGINE=MEMORY DEFAULT CHARSET=utf8
;

有什么想法吗？

Answer 1

表上可能存在锁定，导致查询无法完成。

Answer 2

尝试在执行文件之前将查询字符串记录到文件中。然后，当您认为它已挂起时，您可以查看查询并查看它是否可以手动运行

Answer 3

根据您的追溯，您在执行checkTemplateBuilt期间中断了脚本，而不是enoughPassedForTemplate。

我认为问题在于代码的不同部分;也许某处有无限循环？也许在run函数中？

为什么我的功能“挂起”

3 个答案: