pickle.dump遇到RuntimeError:超过最大递归深度(以cmp为单位) [英] pickle.dump meet RuntimeError: maximum recursion depth exceeded in cmp

问题描述

我注意到它可能是由beautifulsoup或递归数据结构引起的.但是，导致错误的数据结构似乎没问题:

I have noticed that it may be caused by beautifulsoup or recursive data structure. however, the data structure that cause error seems no problem:

class Movie:
def __init__(self, name="", dscore=0, mscore=0, durl="", murl=""): 
    self.name = name
    self.dscore = float(dscore)
    self.mscore = float(mscore)
    self.durl = durl
    self.murl = murl
def __str__(self):
    return unicode(self.name) + u' / ' + unicode(self.dscore) + u' / ' + unicode(self.mscore) \
        + u' / ' + unicode(self.durl) + u' / ' + unicode(self.murl)

引起问题的语句是:

DataDict['MovieInfo'] = MovieInfo

和

pickle.dump(DataDict, f, True)

以下是功能:

def SaveData():
global LinkUrlQueue
global MovieSet
global MovieInfo
global LinkUrlSet
global MovieUrlQueue
DataDict = {}
DataDict['LinkUrlSet'] = LinkUrlSet
DataDict['MovieSet'] = MovieSet
#DataDict['MovieInfo'] = MovieInfo
DataDict['LinkUrlQueue'] = LinkUrlQueue
DataDict['MovieUrlQueue'] = MovieUrlQueue
f = open('MovieInfo.txt', 'wb')

for item in MovieInfo:
    f.write(item.__str__().encode('utf8') + '\n'.encode('utf8'))
f.close()
try:
    print 'saving data...'
    f = open('spider.dat', 'wb')
    pickle.dump(DataDict, f, True)
    f.close()
except IOError as e:
    print 'IOError, error no: %d' % e.no
    print 'saved to spider2.dat'
    pickle.dump(DataDict, open('spider2.dat', 'wb'))
    time.sleep(10)

我完整的源代码:

spider.py: http://paste.ubuntu.com/7149731/

spider.py: http://paste.ubuntu.com/7149731/

fetch.py​​: http://paste.ubuntu.com/7149732/

fetch.py: http://paste.ubuntu.com/7149732/

您可以下载并运行.

此外，欢迎提出任何编码风格建议

Besides, welcome any coding style suggestions

推荐答案

嗯...我终于自己解决了这个问题...

Well... I finally solve the problem by myself...

此问题的原因是，泡菜无法处理BEAUTIFULSOUP ！！！通常，它无法处理html解析器.

The reason for this problem is that pickle cannot handle BEAUTIFULSOUP!!! Generally, it cannot handle html parser.

我意识到，当将参数传递给函数时，我应该将其转换为str()或unicode()然后进行赋值，而不是将其保留为beautifulsoup对象...

I realize that when passing arguments into my functions, I should convert them into str() or unicode() then do assignments, instead of remaining them as beautifulsoup objects...

谢谢大家〜

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