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±à³Ì£ºÇë´Ó×Ö·û´®“goOoOogle”ÖÐÕÒ³öÒÔ“O”¿ªÍ·£¬²¢ÒÔ“O”½áÊøµÄ²¿·Ö¡£
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>>> s="goOoOogle"
>>> s.find("O")
2
>>> s.find("O",3)
4
>>> s[2:5]
'OoO'
>>>

 
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Çë´Ó“goOoOogle”ÖÐÔÙÕÒ³öÁ¬ÐøµÄ“o”£¬²»·Ö´óСд¡£
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ÏÈ¿´¿´ÎÒÃǵē¼ÓÇ¿°æ”ÅÀ³æ£º
import chardet,urllib.request,urllib.parse,re
from sparrow.http.response import Response
class Crawler(object):
def __init__(self,reqQueue=None,resQueue=None): #Á½¸ö¶ÓÁУ¬Ò»¸öÓÃÓÚÌáÈ¡ÍøÒ³ÇëÇó£¬Ò»¸ö´æ·ÅץȡµÄ½á¹û
self.reqQueue=reqQueue
self.resQueue=resQueue
def getData(self,request): #»ñµÃÍøÒ³Êý¾ÝºÍ·þÎñÆ÷·µ»ØµÄ±àÂë
response=urllib.request.urlopen(request)
info=Response(response)
encoding=info.charset
data=response.read()
return (encoding,data)
def getLinks(self,url,content): #½âÎöÍøÒ³ÄÚÈÝ£¬»ñµÃËùÓÐÁ´½Ó
rule_link=re.compile(r"(?i)<a\s+href=(?P<link>.+?)[\s>]") #ÕýÔò±í´ïʽ
links=rule_link.findall(content)
norLinks=[]
for i,link in enumerate(links): #½«²»ÍêÈ«µÄÁ´½Ó£¨Í¨³£ÎªÕ¾ÄÚÁ´½Ó£©²¹³äÍêÈ«
link=link.strip("\"\'") #¹ýÂËÒýºÅ
us=urllib.parse.urlsplit(link)
if(us.scheme==''):
link=urllib.parse.urljoin(url,link)
norLinks.append(link)
return norLinks

def getEnco


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>>> ",".join(a)
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>>> "|".join(['a','b','c'])
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>>> ",".join(('a','b','c'))
'a,b,c'
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