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asin_to_reviews.py
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import requests
from bs4 import BeautifulSoup
import re
import random
import os
import csv
import time
from datetime import datetime
class Asin_to_reviews():
def __init__(self):
# 这里填你要爬取得ASIN，注意英文引号，英文逗号，每行必须左对齐！
self.asin_list = [
"B06XP6YVN4",
"B00196P2O8",
]
# 这里填每个ASIN里review最大爬取页数
self.max_page = 20
# recent表示爬取最近时间的review，top表示爬取默认排名高的review
self.top_or_recent = "recent"
# all代表所有星级，positive代表好评，critical代表差评
self.all_or_positive_or_critical = "all"
# 防止爬取太频繁导致亚马逊买家页面不能访问，每爬取一个页面，休息的时间秒数
self.sleep_time = 1
# 下面的不用更改
self.reviews_dict_list = []
self.csv_file_name = ""
def download_soup_by_url(self, url):
# headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36'}
# headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0'}
headers_list = [
{'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36'},
{'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:55.0) Gecko/20100101 Firefox/55.0'},
{'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36'},
{'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Ubuntu/11.10 Chromium/27.0.1453.93 Chrome/27.0.1453.93 Safari/537.36'},
{'User-Agent': 'Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.94 Safari/537.36'},
{'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729; InfoPath.3; rv:11.0)'},
{'User-Agent': 'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)'},
{'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1'},
{'User-Agent': 'Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; en) Presto/2.8.131 Version/11.11'},
{'User-Agent': 'Opera/9.80 (Windows NT 6.1; U; en) Presto/2.8.131 Version/11.11'},
{'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Maxthon 2.0)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; TencentTraveler 4.0)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; The World)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; SE 2.X MetaSr 1.0; SE 2.X MetaSr 1.0; .NET CLR 2.0.50727; SE 2.X MetaSr 1.0)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; 360SE)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Avant Browser)'},
{'User-Agent': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)'}
]
headers = random.choice(headers_list)
# print("headers: ", headers)
china_proxies_list = [
{'http:': 'http://123.56.169.22:3128'},
{'http:': 'http://121.196.226.246:84'},
{'http:': 'http://122.49.35.168:33128'},
{'http:': 'http://124.238.235.135:81'},
{'http:': 'http://121.40.199.105:80'},
{'http:': 'http://202.99.99.123:80'},
{'http:': 'http://61.153.67.110:9999'},
{'http:': 'http://121.40.213.161:80'},
{'http:': 'http://121.42.163.161:80'},
{'http:': 'http://111.13.7.42:81'},
{'http:': 'http://114.215.103.121:8081'},
{'http:': 'http://175.11.157.195:80'}
]
usa_proxies_list = [
{'http:': 'http://40.140.245.109:8080'},
{'http:': 'http://50.116.12.78:8118'},
{'http:': 'http://69.85.70.37:53281'},
{'http:': 'http://35.195.160.37:1244'},
{'http:': 'http://104.131.122.164:8118'},
{'http:': 'http://32.115.161.78:53281'},
{'http:': 'http://165.227.7.51:80'},
{'http:': 'http://72.169.78.49:87'},
{'http:': 'http://52.24.67.217:80'},
{'http:': 'http://209.159.156.199:80'},
{'http:': 'http://198.35.55.147:443'},
{'http:': 'http://97.72.129.36:87'},
{'http:': 'http://152.160.35.171:80'},
{'http:': 'http://191.96.51.224:8080'},
{'http:': 'http://45.55.157.204:80'}
]
# proxies = random.choice(usa_proxies_list)
proxies = random.choice(china_proxies_list)
# print("proxies: ", proxies)
# r = requests.get(url, headers=headers)
r = requests.get(url, headers=headers, proxies=proxies)
# print("Downloading: r.status_code=", r.status_code)
# print("url: ", url)
if r.status_code != 200:
headers = random.choice(headers_list)
proxies = random.choice(china_proxies_list)
r = requests.get(url, headers=headers, proxies=proxies)
# print("Downloading: r.status_code=", r.status_code)
soup = BeautifulSoup(r.content, 'html.parser')
# soup = BeautifulSoup(r.read(), 'html.parser')
# soup = BeautifulSoup(r.content.decode('utf-8'), 'html.parser')
# soup = BeautifulSoup(r.content, 'html5lib')
time.sleep(self.sleep_time)
return soup
def dict_list_to_csv_file(self):
print("***********************************")
print("start to write csv file...")
headers = []
for i in self.reviews_dict_list[0]:
headers.append(i)
csv_folder = "reviews"
csv_file_path = csv_folder + "/" + str(self.csv_file_name) + ".csv"
if not os.path.exists(csv_folder):
print("***********************************")
print("reviews folder not exist, create the folder now...")
os.mkdir(csv_folder)
print("success to create reviews folder")
try:
with open(csv_file_path, 'w', encoding='utf8', newline='') as f:
f_csv = csv.DictWriter(f, headers)
f_csv.writeheader()
f_csv.writerows(self.reviews_dict_list)
print("success to write csv file...")
except:
print("fail to write csv!")
def first_review_url_to_review_info(self, url, asin):
location = re.search("ref=", url)
span = location.span()[0]
first_review_url_part1 = url[:span]
review_base_url = first_review_url_part1 + "ref=cm_cr_arp_d_viewopt_sr?ie=UTF8&filterByStar=" + self.all_or_positive_or_critical + "&reviewerType=avp_only_reviews&sortBy=" + self.top_or_recent + "&pageNumber="
first_review_url = review_base_url + str(1)
first_review_url_soup = self.download_soup_by_url(first_review_url)
last_page = 1
try:
last_page = first_review_url_soup.find(id="cm_cr-pagination_bar").find_all("li", class_="page-button")[-1].get_text()
except:
pass
last_page = int(last_page)
min_page = min(last_page, self.max_page)
for page in range(1, min_page+1):
review_url = review_base_url + str(page)
try:
soup = self.download_soup_by_url(review_url)
review_list = soup.find(id="cm_cr-review_list").find_all("div", {"data-hook":"review"})
for review_index, review in enumerate(review_list):
review_title = review.find("a", {"data-hook":"review-title"}).get_text()
review_star_rating = review.find("i", {"data-hook": "review-star-rating"}).get_text()
review_author = review.find("a", {"data-hook": "review-author"}).get_text()
review_date = review.find("span", {"data-hook": "review-date"}).get_text()
review_body = review.find("span", {"data-hook": "review-body"}).get_text()
page_rank = "page" + str(page) + "-" + str(review_index + 1)
profile_url_part = review.find("a", {"data-hook": "review-author"})['href']
profile_url = "https://www.amazon.com" + profile_url_part
review_dict = { "page_rank": page_rank,
"asin": asin,
"review_title": review_title,
"review_star_rating": review_star_rating,
"review_author": review_author,
"review_date": review_date,
"review_body": review_body,
"profile_url": profile_url,
}
print(review_dict)
self.reviews_dict_list.append(review_dict)
except:
pass
def asin_to_first_review_url(self, asin):
listing_url = "https://www.amazon.com/dp/" + asin
soup = self.download_soup_by_url(listing_url)
first_review_url_part2 = soup.find(id="dp-summary-see-all-reviews")["href"]
first_review_url = "https://www.amazon.com" + first_review_url_part2
return first_review_url
def get_reviews_by_asin(self, asin):
try:
first_review_url = self.asin_to_first_review_url(asin)
self.first_review_url_to_review_info(first_review_url, asin)
except:
pass
def get_reviews(self):
self.csv_file_name = str(datetime.now()).replace(":", ";").strip().split(".")[0]
start_time = datetime.now()
for asin in self.asin_list:
self.get_reviews_by_asin(asin)
self.dict_list_to_csv_file()
end_time = datetime.now()
how_many_seconds = end_time - start_time
print(start_time)
print(end_time)
how_many_seconds = str(how_many_seconds.total_seconds()).split(".")[0]
print(how_many_seconds + " seconds")
#main function
asin_to_reviews = Asin_to_reviews()
asin_to_reviews.get_reviews()