–刚接触python2天，，想快速上手，就写了个爬虫，写完之后，成就感暴增，用起来顺手多了。1.源码#coding=utf-8import urllibimport reclass Page():__slots__ = ('url', 'regex', 'arg' )def __init__(this ,url ,regex ,arg ):if not arg :arg['download'] = Falsearg['write'] = Falsearg['outpath'] = ''this.filter = Filter(url,{'regex' : regex,'custom' : arg['custom'] if arg.has_key('custom') else ''})this.url = url;this.outpath = arg['outpath'] if arg.has_key('outpath') else ''this.download =arg['download'] if arg.has_key('download') else Falsethis.write = arg['write'] if arg.has_key('write') else Falsethis.pagin = arg['pagin'] if arg.has_key('pagin') else Falsedef start(this ,*prefix):_pagin = this.pagin; _getHtml = this.getHtml;_prefix = '1';if len(prefix) >= 1 : _prefix = prefix[0];_getHtml(this.url ,_prefix);if _pagin != False :_start = _pagin['start']; _end = _pagin['end']; _rule = _pagin['rule'];while _start <= _end :_getHtml(_rule.replace('{page}',str(_start)) ,str(_start));_start += 1def down(this ,url ,prefix):try:filename = str(prefix) + '_' + url[url.rfind("/")+1:]urllib.urlretrieve(url, this.outpath + filename);print 'download-succeed\t->',filenameexcept:print 'download->failed'def downs(this ,arr ,prefix):for x in arr: this.down(x ,prefix);def writeFile(this ,arr):_file = open(this.outpath + 'list.txt', 'a+')try:_file.writelines('\n\n'+'\n'.join(arr))finally:_file.close()def getHtml(this ,url ,prefix):try:_p = urllib.urlopen(url); html = _p.read(); _p.close()html = unicode(html, "gb2312").encode("utf8")arr = this.filter.execute(html ,prefix)if this.download == True : this.downs(arr ,prefix);if this.write == True : this.writeFile(arr);except:print "catch finally exception." class Filter():def __init__(this ,url ,arg):this.arg = argthis.url = urldef _getDomain(this):url = this.url.split('/')return url[0]+'//'+url[2]def _getRealUrl(this ,domain, url):if url[0] == '/' : return domain + url;if '' in url : return url #==============需要处理的字符串链接… return domain + '/' +url;def execute(this ,html ,prefix):_arg = this.arg; arr=[]; getRealUrl = this._getRealUrl;its = re.finditer( _arg['regex'] ,html)for match in its: arr.append(getRealUrl(this._getDomain() ,match.groups()[0]))if _arg.has_key('custom') == True and _arg['custom'] != '' : _arg['custom'](arr ,prefix);return arrdef paginList(arr ,prefix):num = 1;for x in arr:Page(x ,'<p><img\ssrc="(.*?)"\salt.*?</p>' ,{'download' : True,'outpath' : 'f:/temp/'}).start(prefix+'_'+str(num));num+=1Page("" ,'<li><a\shref="(.*?)"\s.*?\salt="(.*?)"\s.*?</li>' ,{'custom' : paginList,'pagin' : {'start' : 2,'end' : 10,'rule' : '{page}.htm'}}).start()2.运行如下
$ python getjpg.pydownload-succeed -> 1_1_1bdbc1d1628a1f0ebd5fc60055ee506e.jpgdownload-succeed -> 1_2_01b5b45171979aace617ab79299d7515.jpgdownload-succeed -> 1_3_5698c42371add40501a328ef2c753b4d.jpgdownload-succeed -> 1_4_f7219087ce29c474a777867b8e4755ed.jpgdownload-succeed -> 1_5_58bf8172ea8bbc4cee0a0f8240f2b289.jpgdownload-succeed -> 1_6_b4700f4bd96f90039ed662ebbf6c1f7c.jpgdownload-succeed -> 1_7_8a637b3362acddac4671d9ad02e4a93f.jpgdownload-succeed -> 1_8_f28e22908b68d6fbe42a15c4fcd62613.jpgdownload-succeed -> 1_9_03806c0b3d33cfc3a3eb4ea3bbe8ca9e.jpgdownload-succeed -> 1_10_cf26fb246e9b57c06e328af94e60450b.jpgdownload-succeed -> 1_11_7563610f39bd29b8381201b95eed2624.jpgdownload-succeed -> 1_12_8ccaccede13d0f377d0d8822243f3b6a.jpgdownload-succeed -> 1_13_c95a0207db67a334be4812cec25d7023.jpgdownload-succeed -> 1_14_71ce070aef91660e8dad60a5919ec505.jpgdownload-succeed -> 1_15_9a647a8f449cdb3208a561b4c9fe2ce6.jpgdownload-succeed -> 1_16_45d9992e3d5080cf14ef73da14066283.jpgdownload-succeed -> 1_17_7bd84ee7d6f5cb911a3b1dbc6e0775c4.jpgdownload-succeed -> 1_18_8397b9d434a187444c389ebff48bcfb5.jpgdownload-succeed -> 2_1_f14e658f2464769756039e1ff18d5693.jpgdownload-succeed -> 2_2_ad051a669008969800ccd324de056465.jpgdownload-succeed -> 2_3_6190ffe369199b95274100996b02359a.jpgdownload-succeed -> 2_4_f14dce28d960941781a12a57123076df.jpgdownload-succeed -> 2_5_c7fb3b6f700339e9f3c9ee02474211eb.jpgdownload-succeed -> 2_6_327f1a33b8c5989a2d014ea41565caef.jpg
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3.结果如下一个人身边的位置只有这么多，
