完成的目标：
输入搜索的商品 以及 淘宝的已评价数目、店铺的商品描述（包括如实描述、服务态度、快递的5.0打分）；
按要求，晒选出要求数量的结果，并按“物美价廉算法”排序后输出
思路：
1，利用淘宝搜索‘https://s.taobao.com/search?‘的价格filter 先进行价格筛选，得到结果的网站
2，用urllib打开结果网站，构造正则表达式匹配出各个商品结果的 价格、已评价数量、店铺的如实描述等信息；
并把结果保存至二维数组里。
3，利用商品及店铺信息，用“物美价廉算法”给各个商品打分
4，按打分排序， 各个信息总结果按排序输出到新建txt文件里；
并将各个商品图片下载到文件及建立相同排序开头的txt(其名字包好简要的商品信息)，这样图片和商品信息同时能在一个文件夹里用大图排列看到。
5.，可以把输入的参数（价格范围等要求）以函数输入，，用pyinstaller 把整个py程序打包为EXE 就可以发布了。
源代码如下
1 # -*- coding: utf-8 -*-
2 import urllib
3 import urllib2
4 import re
5 import time
6 import random
7 import os
8 from math import log
9 from math import log10
10 from math import sqrt
11 import sys
12
13 reload(sys)
14 sys.setdefaultencoding(‘utf8‘)
15
16
17 class counter(object):
18 #计数器
19 def __init__(self):
20 self.count = 0
21 self.try_time = 0
22 self.fail_time = 0
23 self.url_list = []
24 self.new_flag = True
25 self.results=[]
26 self.p=0
27 self.d=0
28 def print_counter(self):
29 print ‘try_time:‘, self.try_time, " get_count:" , self.count, " fail_time:",self.fail_time
30 counter1=counter()
31
32 def post_request(url):
33 #构造随机头部文件访问请求
34 User_Agents=["Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0",#
35 "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36",
36 "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50", #
37 "Opera/9.80 (Windows NT 6.1; U; en) Presto/2.8.131 Version/11.11",
38 "Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; en) Presto/2.8.131 Version/11.11O"
39 ]
40 random_User_Agent = random.choice(User_Agents)
41 #print random_User_Agent
42
43 req =urllib2.Request(url) #！！
44
45 req.add_header("User-Agent",random_User_Agent)
46 req.add_header("GET",url)
47 req.add_header("Referer",url)
48 return req
49
50 def recommend_rate(price,description,delivery,service,comments):
51 #描述为绝对值
52 av_p=counter1.p/counter1.count
53 av_d=counter1.d/counter1.count
54 rate=(description/av_d)**20*(description+delivery+service)*(av_p/(price))**0.1+log((comments+5),1000)
55 print ‘all count=‘,counter1.count
56 print "avrage price=",av_p,‘;‘,av_p/(price),‘;price‘,price,‘;comments=‘,comments,‘;descrip=‘,description
57 print ‘rate=‘,rate,‘(price)yinzi‘,(av_p/(price))**0.1,‘descrip_yinzi‘,(description/av_d)**20,‘comments_factor=‘,log((comments+50),100)
58 return rate
59
60 def product_rank(list):
61 for x in list:
62 #0开始为 x0商品名 、x1图片链接、x2商品链接、x3价格、x4评论数、 x5店铺名、 x6快递情况、x7描述相符情况3个、x8服务情况
63 rate=recommend_rate(x[3],x[7],x[6],x[8],x[4])
64 x.append(rate)
65
66 def get_user_rate(item_url):
67 ‘‘‘获取卖家信用情况；未登录情况不能访问。。。‘‘‘
68 html=urllib2.urlopen(item_url)
69 #"//rate.taobao.com/user-rate-282f910f3b70f2128abd0ee9170e6428.htm"
70 regrex_rate=‘"(//.*?user\-rate.*?)"‘
71 codes= re.findall(regrex_rate,html.read())
72 html.close()
73
74 user_rate_url= ‘http:‘+codes[0]
75 print ‘uu‘, user_rate_url
76
77 user_rate_html = urllib2.urlopen(user_rate_url)
78 print user_rate_html.read()
79 #title="4.78589分"
80 desc_regex=u‘title="(4.[0-9]{5}).*?‘
81 de_pat=re.compile(desc_regex)
82
83 descs = re.findall(de_pat,user_rate_html.read())
84 print len(descs)
85 item_url=‘https://item.taobao.com/item.htm?id=530635294653&ns=1&abbucket=0#detail‘
86 #get_user_rate(item_url)
87 ‘‘‘获取卖家信用情况；未登录情况不能访问。。。暂时 无用‘‘‘
88
89 def get_praised_good(url,file_open,keyword,counts):
90 #从给定的淘宝链接中 获取符合条件的商品list
91 html=urllib2.urlopen(post_request(url))
92 code=html.read()
93 html.close()
94
95 regrex2=ur‘raw_title":"(.*?)","pic_url":"(.*?)","detail_url":"(.*?)","view_price":"(.*?)".*?"comment_count":"(.*?)".*?"nick":"(.*?)".*?"delivery":\[(.*?),(.*?),(.*?)\],"description":\[(.*?),(.*?),(.*?)\],"service":\[(.*?),(.*?),(.*?)\]‘
96 #每一个匹配项 返回 15个 字符串
97 #x[0]开始为 x0商品名 、x1图片链接、x2商品链接、x3价格、x4评论数、 x5店铺名、 x6快递情况3个、x9描述相符情况3个、x12服务情况3个
98 #x3,x6,x9,x12,x4
99 pat=re.compile(regrex2)
100 meet_code=re.findall(regrex2,code)#
101
102 for x in meet_code:
103 if counter1.count>=counts :
104 print "have get enough pruducts"
105 break
106 description_higher=int(x[10])*float(x[11])/100
107 service_higher=int(x[13])*float(x[14])/100
108 try:
109 x4=int(x[4])#description_count
110 except:
111 x4=0
112 if (description_higher>=description_higher_require) and (service_higher>=service_higher_require) and x4>=description_count_require:
113 if re.findall(keyword,x[0]) :#():
114 #try:
115 detail_url=‘http:‘+x[2].decode(‘unicode-escape‘).encode(‘utf-8‘)
116 x1=‘http:‘+x[1].decode(‘unicode-escape‘).encode(‘utf-8‘)
117 #print type(x)
118 if detail_url in counter1.url_list:
119 counter1.new_flag=False
120 print ‘no more new met products‘
121 print counter1.url_list
122 print detail_url
123 break
124 counter1.url_list.append(detail_url)
125 counter1.try_time+=1
126 counter1.count+=1
127
130 x11=float(x[11])/100
131 x9=float(x[9])/100
132 x12=float(x[12])/100
133 x6=float(x[6])/100
134 x3=float(x[3])
135 counter1.p+=x3
136 counter1.d+=x9
137 x5=unicode(x[5],‘utf-8‘)
138
139
140 result_list=[]
141 result_list.append(x[0])
142 result_list.append(x1)
143 result_list.append(detail_url)
144 result_list.append(x3)
145 result_list.append(x4)
146 result_list.append(x5)
147 result_list.append(x6)
148 #result_list.append(x7)
149 result_list.append(x9)
150 result_list.append(x12)
151 #result_list.append(rate)
152 #0开始为 x0商品名 、x1图片链接、x2商品链接、x3价格、x4评论数、 x5店铺名、 x6快递情况、x7描述相符情况、x8服务情况
153 counter1.results.append(result_list)
154 ‘‘‘
155 txt_name=reserve_file_path+‘\\‘+ ‘%s__‘%counter1.count+ ‘custome_description_%s __‘%x9 +‘__comments_%s_‘%x[4]+ ‘___price_%srmb___‘%x[3] +x5 +‘.txt‘
156
157 file_o=open(txt_name,‘a‘)
158 file_o.write(detail_url)
159 file_o.close()
160
161 print ‘\nget_one_possible_fine_goods:\n‘,‘good_name:‘,x[0].decode(‘utf-8‘)
162 print ‘price:‘,x[3].decode(‘utf-8‘),x[5].decode(‘utf-8‘)
163 print ‘custome_description:‘,x9,‘--‘,x11,‘%higher than average;‘,‘described_nomber:‘,x[4],‘ service:‘,float(x[12])/100
164 print detail_url.decode(‘utf-8‘),‘\ngood_pic_url:‘,x1.decode(‘utf-8‘)
165
166 print txt_name
167
168 file_open.write(‘%s__‘%counter1.count +x[0]+‘\nprice:‘+x[3]+‘￥,‘+‘\n‘+detail_url+‘ \n‘+x[5]+‘\ncustomer_description:‘+str(x9)+‘; ‘+str(x11)+‘%higher than average described_number:‘+x[4]+‘\n\n\n‘)
169
170 print ‘get one -^-‘
171 ‘‘‘
172 #except:
173 #print ‘lose one picture‘
174 #counter1.fail_time+=1
175
176
177 def save_downpic(lis,file_open,reserve_file_path):
178 ‘‘‘从商品list下载图片到reserve_file_path，并写入信息至fileopen‘‘‘
179 #0开始为 x0商品名 、x1图片链接、x2商品链接、x3价格、x4评论数、 x5店铺名、 x6快递情况、x7描述相符情况、x8服务情况、x9:rate
180 len_list=len(lis)
181 print len_list
182 cc=0
183 for x in lis:
184
185 try:
186 urllib.urlretrieve(x[1],reserve_file_path+‘\\%s___‘%cc +unicode(x[0],‘utf-8‘)+‘.jpg‘)
187
188 txt_name=reserve_file_path+‘\\‘+ ‘%s__‘%cc+ ‘custome_description_%s __‘%x[7] +‘__comments_%s_‘%x[4]+ ‘___price_%srmb___‘%x[3] +x[5] +‘.txt‘
189
190 file_o=open(txt_name,‘a‘)
191 file_o.write(x[2])
192 file_o.close()
193
194 print ‘\nget_one_possible_fine_goods:\n‘,‘good_name:‘,x[0].decode(‘utf-8‘)
195 print ‘rate=‘,x[9]
196 print ‘price:‘,x[3],x[5]#.decode(‘utf-8‘)
197 print ‘custome_description:‘,x[7],‘--‘,‘described_number:‘,x[4],‘ service:‘,x[8]
198 print x[2].decode(‘utf-8‘),‘\ngood_pic_url:‘,x[1].decode(‘utf-8‘)
199
200 print txt_name
201 print cc+1,"th"
202
203 file_open.write(u‘%s__‘%cc +u‘%s‘%x[0]+‘\nprice:‘+str(x[3])+‘￥,‘+‘\n‘+str(x[2])+‘ \n‘+str(x[5])+‘\ncustomer_description:‘+str(x[7])+‘described_number:‘+str(x[4])+‘\n\n\n‘)
204
205 print ‘get one -^-‘
206 except :
207 pass
208 cc+=1
209 time.sleep(0.5)
210
211 def get_all_praised_goods(reserch_goods,counts,reserve_file_path,price_min,price_max):
212 #边里搜索结果每一页
213 #initial url and page number
214 initial_url=‘https://s.taobao.com/search?q=‘+reserch_goods+‘&filter=reserve_price%5B‘+‘%s‘%price_min+‘%2C‘+‘%s‘%price_max+‘%5D&s=‘
215 print "initial_url",initial_url
216 page_n=0
217 reserve_file=reserve_file_path+r‘\found_goods.txt‘
218 file_open=open(reserve_file,‘a‘)
219
220 file_open.write(‘****************************\n‘)
221 file_open.write(time.ctime())
222 file_open.write(‘\n****************************\n‘)
223
224 while counter1.new_flag and counter1.count<counts :
225
226 url_1=initial_url+‘%s‘%(44*page_n)
227 #print initial_url
228 print ‘url_1:‘, url_1
229 #print ‘ss‘,initial_url+‘%s‘%(44*page_n)
230 page_n+=1
231
232 get_praised_good(url_1,file_open,keyword,counts)
233 time.sleep(2)
234 # except:
235 print "%s"%page_n,"pages have been searched"
236 if page_n>=11 :
237 print "check keyword,maybe too restrict"
238 break
239 print url_1
240 product_rank(counter1.results)
241
242 counter1.results.sort(key=lambda x :x[9],reverse=True)
243
244 save_downpic(counter1.results,file_open,reserve_file_path)
245
246 file_open.close()
247 counter1.print_counter()
248
249 if __name__=="__main__":
250
251 reserch_goods=‘英伦男外套‘ #淘宝搜索词
252 keyword=‘‘#raw_input().decode("gbk").encode("utf-8") #个人限定词，商品名字必须包含，防止淘宝推荐了其他相关词 (正则表达式). 为任意表示不作限制
253 price_min=22 #价格区间
254 price_max=300
255 description_higher_require=0 # % 默认高于average, 输出结果大于此值
256 service_higher_require=0 # % 默认高于average, 输出结果大于此值
257 description_count_require=6
258
259 counts=50
260
261
262 reserve_file_path=r"C:\Users\Administrator\Desktop\Python scrapy\find_worthy_goods\results"#结果保存路径
263 while os.path.exists(reserve_file_path):
264 reserve_file_path =reserve_file_path+‘%s‘%random.randrange(0,100)
265 if not os.path.exists(reserve_file_path):
266 os.makedirs(reserve_file_path)
267
268
269 get_all_praised_goods(reserch_goods,counts,reserve_file_path,price_min,price_max)
270
271 #print counter1.results
272 #
273 #print counter1.results
274
275 ‘‘‘ 以下用输入函数输入要求的刷选条件
276 print ‘说明：\n本程序用于在淘宝上搜索商品时主动通过 价格范围、商品描述、服务态度、评论数来筛选商品;\n筛选出来的商品图片下载保存到磁盘（默认桌面新建find_worty_goods文件夹）并建立同序号开头的txt文件，图片显示商品，其旁的txt文件名显示价格等关键信息，txt里保存商品的淘宝链接‘.decode(‘utf-8‘)
277 print "please input reserch _goods_name"
278 print "请输入搜索商品名称；注意不能有空格，下同".decode(‘utf-8‘)
279 reserch_goods=raw_input() #淘宝搜索词
280 if reserch_goods:
281 # #
282 # print "please input _keyword that goods name must include:\n(more than one keyword must use Regular Expression); default by no kewords"
283 # try:
284 # keyword=raw_input().decode("gbk").encode("utf-8") #个人限定词，商品名字必须包含，防止淘宝推荐了其他相关词 (正则表达式). 为任意表示不作限制
285 # except:
286 # keyword=‘青‘
287 # #
288 keyword=‘.‘
289 print "\nplease input _minimal price and _maximal price; \ndefault by 0,10000\nnext by ‘enter‘key input nothing means by default,the same below "
290 print ‘请输入价格范围 ；默认0-10000 ；两项用半角逗号","分隔 按回车键确认；什么也不输入代表使用默认值 ‘.decode(‘utf-8‘)
291 try:
292 price_min, price_max=input()
293 except:
294 print ‘not input or wrong number,use default range‘
295 price_min, price_max = 0 ,10000
296 #
297 print "\nplease input _description_higher_percent_require and _service_higher__percent_require\n range:(-100,100) ; \ndefault by 0,0 I.e better than average"
298 print ‘请输入商品描述、服务高于平均值的百分比-100 ~100‘.decode(‘utf-8‘)
299 # % 默认高于average, 输出结果大于此值
300 try:
301 description_higher_require,service_higher_require=input()
302 except:
303 print ‘not input or wrong number,use default range‘
304 description_higher_require = 0 # % 默认高于average, 输出结果大于此值
305 service_higher_require = 0
306 #
307 print "\nplease input description count limit, default more than 1"
308 print ‘输入最低商品评价数，默认大于1‘.decode(‘utf-8‘)
309 try:
310 description_count_require=input()
311 except :
312 print ‘not input or wrong number,use default range‘
313 description_count_require=1
314 #
315
316 print "\nIF customise file reserve path, Y or N \ndefault/sample as: C:\\Users\\Administrator\\Desktop\\find_worthy_goods\\results "
317 print ‘是否自定义保存文件目录 Y or N‘.decode(‘utf-8‘)
318 if raw_input()==‘Y‘:
319 print "please input path that you want to reserve; \n "
320 reserve_file_path = raw_input()
321 else:
322 reserve_file_path=r"C:\Users\Administrator\Desktop\find_worthy_goods\results"#结果保存路径
323
324 while os.path.exists(reserve_file_path):
325 reserve_file_path = reserve_file_path+‘%s‘%random.randrange(1,10)
326 #print "the path exist,we‘ll make a new one"
327 try:
328 os.makedirs(reserve_file_path)
329 print ‘ok,file_path we reserve results: %s‘%reserve_file_path
330 print ‘保存的路径为：‘.decode(‘utf-8‘)
331 except:
332 print "failed to make file path\nplease restart program"
333 print ‘创建文件夹失败，请重新启动程序‘.decode(‘utf-8‘)
334
335 #
336 print "\nplease input how many results you want, default by 50"
337 print ‘您要获取的商品数目，默认50‘.decode(‘utf-8‘)
338 try:
339 counts=input()
340 except :
341 counts=50
342 #
343
344 get_all_praised_goods(reserch_goods,counts,reserve_file_path,price_min,price_max)
345 print ‘\n‘
346 counter1.print_counter()
347 print "finished,please look up in %s"%reserve_file_path
348 print ‘下载完成‘.decode(‘utf-8‘)
349
350 print counter1.results
351 input()
352 else:
353 print "no search goods"
354 print ‘没有输入商品名称‘.decode(‘utf-8‘)
355 ‘‘‘
356 #下一步保存图片，以文件名为商品图片名字，并以序号开头
357 #同时，输出 价格、商家名，商品描述、服务等 到 txt文本
358 #在商品图片看中后，便可按序号查找
359 #按描述、服务评价高于平均，购物体验应该可以的
时间： 2024-10-20 18:07:33