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    urllibÄ£¿éÌṩµÄÉϲã½Ó¿Ú£¬Ê¹ÎÒÃÇ¿ÉÒÔÏñ¶ÁÈ¡±¾µØÎļþÒ»Ñù¶ÁÈ¡wwwºÍftpÉϵÄÊý¾Ý¡£Ã¿µ±Ê¹ÓÃÕâ¸öÄ£¿éµÄʱºò£¬ÀÏÊÇ»áÏëÆð¹«Ë¾²úÆ·µÄ¿Í»§¶Ë£¬Í¬ÊÂÓÃC++ÏÂÔØWebÉϵÄͼƬ£¬ÄÇÖÖ“Í´¿à”µÄ±íÇé¡£ÎÒÒÔǰ·­Òë¹ýlibcurl½Ì³Ì£¬ÕâÊÇÔÚC/C++»·¾³Ï±ȽϷ½±ãʵÓõÄÍøÂç²Ù×÷¿â£¬Ïà±ÈÆðlibcurl£¬PythonµÄurllibÄ£¿éµÄʹÓÃÃż÷ÔòµÍ¶àÁË¡£¿ÉÄÜÓÐЩÈËÓÖ»áÓÃЧÂÊÀ´ÅúÆÀPython£¬ÆäʵÔÚ²Ù×÷ÍøÂ磬»òÕßÔÚ¼¯Èº½»»¥µÄʱºò£¬ ÓïÑÔµÄÖ´ÐÐЧÂʾø²»ÊÇÆ¿¾±¡£ÕâÖÖÇé¿öÏ£¬Ò»¸ö±È½ÏºÃµÄ·½·¨ÊÇ£¬½«pythonǶÈëµ½C/C++ÖУ¬ÈÃPythonÀ´Íê³ÉһЩ²»ÊǺËÐĵÄÂß¼­´¦Àí¡£ÓÖ³¶Ô¶ÁË£¬·Ï»°ÉÙ˵£¬¿ªÊ¼urllibÖ®ÂðÉ~~ £¨Ç°¼¸ÌìÎÒÓÃÕâ¸öÄ£¿éдÁ˸öÖ©Ö룬¸ÐÐËȤµÄͬѧ¿ÉÒÔÔÚÒÔǰµÄ²©¿ÍÖÐÕÒµ½´úÂ룩
    ÏÈ¿´Ò»¸öÀý×Ó£¬Õâ¸öÀý×Ó°ÑGoogleÊ×Ò³µÄhtmlץȡÏÂÀ´²¢ÏÔʾÔÚ¿ØÖÆÌ¨ÉÏ£º
# ±ð¾ªÑÈ£¬Õû¸ö³ÌÐòȷʵֻÓÃÁËÁ½ÐдúÂë
import urllib
print urllib.urlopen('http://www.google.com').read()
urllib.urlopen(url[, data[, proxies]]) :
    ´´½¨Ò»¸ö±íʾԶ³ÌurlµÄÀàÎļþ¶ÔÏó£¬È»ºóÏñ±¾µØÎļþÒ»Ñù²Ù×÷Õâ¸öÀàÎļþ¶ÔÏóÀ´»ñȡԶ³ÌÊý¾Ý¡£²ÎÊýurl±íʾԶ³ÌÊý¾ÝµÄ·¾¶£¬Ò»°ãÊÇÍøÖ·£»²ÎÊýdata±íʾÒÔpost·½Ê½Ìá½»µ½urlµÄÊý¾Ý(Íæ¹ýwebµÄÈËÓ¦¸ÃÖªµÀÌá½»Êý¾ÝµÄÁ½ÖÖ·½Ê½£ºpostÓëget¡£Èç¹ûÄã²»Çå³þ£¬Ò²²»±ØÌ«ÔÚÒ⣬һ°ãÇé¿öϺÜÉÙÓõ½Õâ¸ö²ÎÊý)£»²ÎÊýproxiesÓÃÓÚÉèÖôúÀí£¨ÕâÀï²»Ïêϸ½²ÔõôʹÓôúÀí£¬¸ÐÐËȤµÄ¿´¿Í¿ÉÒÔÈ¥·­ÔÄPythonÊÖ²áurllibÄ£¿é£©¡£urlopen·µ»Ø Ò»¸öÀàÎļþ¶ÔÏó£¬ËûÌṩÁËÈçÏ·½·¨£º
    read()
, readline()
, readlines()
, fileno()
, close()
£ºÕâЩ·½·¨µÄʹÓ÷½Ê½ÓëÎļþ¶ÔÏóÍêȫһÑù;
    info()£º·µ»ØÒ»¸öhttplib.HTTPMessage
¶ÔÏ󣬱íʾԶ³Ì·þÎñÆ÷·µ»ØµÄÍ·ÐÅÏ¢£»
    getcode()£º·µ»ØHttp״̬Âë¡£Èç¹ûÊÇhttpÇëÇó£¬200±íʾÇëÇó³É¹¦Íê³É;404±íÊ¾ÍøÖ·Î´ÕÒµ½£»
    geturl()£º·µ»ØÇëÇóµÄurl£»
    ÏÂÃæÀ´À©³äÒ»ÏÂÉÏÃæµÄÀý×Ó£¬¿´¹Ù¿ÉÒÔÔËÐÐÒ»ÏÂÕâ¸öÀý×Ó£¬¼ÓÉî¶ÔurllibµÄÓ¡Ïó£º
google = urllib.urlopen('http://www.google.com')
print 'http header:\n', google.info()
print 'http status:', google.getcode()
print 'url:', google.geturl()
for line in google: # ¾ÍÏñÔÚ²Ù×÷±¾µØÎļþ
print line,
google.close()


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