python爬蟲學習之定向爬取淘寶商品價格，供大家參考，具體內容如下
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import requestsimport redef getHTMLText(url): try: r = requests.get(url, timeout=30) r.raise_for_status() #如果發送了一個失敗請求(非200響應),#我們可以通過 Response.raise_for_status() 來拋出異常: r.encoding= r.apparent_encoding return r.text except: return ""def parsePage(ilt,html): try: plt = re.findall(r'\"view_price\"\:\"[\d\.]*?\"',html) #正則表達式來匹配 "view_price":"\d\."類型的字符串 tlt = re.findall(r'\"raw_title\"\:\".*?\"',html)#正則表達式來匹配 "raw_title":".*?"類型的字符串,.*?是任意字符的最小匹配 for i in range(len(plt)): price = eval(plt[i].split(':')[1]) title = eval(tlt[i].split(':')[1]) ilt.append([price,title]) except: print ("")def PrintGoodsList(ilt): tplt = "{:4}\t{:8}\t{:16}" print (tplt.format("序號","價格","商品名稱")) count = 0 for g in ilt: count = count + 1 print (tplt.format(count,g[0],g[1]))def main(): goods = '書包' depth = 2 start_url = 'https://s.taobao.com/search?q=' + goods infoList=[] for i in range(depth): try: url = start_url + '&s=' + str(44*i) html= getHTMLText(url) parsePage(infoList,html) except: continue PrintGoodsList(infoList)main() |
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：http://blog.csdn.net/learn_is_happy/article/details/78773956
