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amazon.py
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amazon.py
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from splinter import Browser
import time
import requests
import csv
import re
from datetime import datetime
import os
import random
import shutil
def captcha():
try:
element = browser.find_by_css('.a-last')
if "Sorry" in element.text:
return True
else:
return False
except:
return False
def nextpagebutton():
next_page_button = browser.find_by_css('li.a-last a')
# Click the button if found
if next_page_button:
return next_page_button
else:
return False
def searchsingle(start,end,content):
try:
if end != "" and start != "":
pattern = re.compile(f'{re.escape(start)}(.*?){re.escape(end)}', re.DOTALL)
elif end == "":
pattern = re.compile(f'{re.escape(start) + r'\s*(.*)'}')
elif start == "":
pattern = re.compile(f'{r'^(.*?)' + re.escape(end)}')
result=re.search(pattern, content).group(1)
return result
except:
raise Exception("line not found")
def searchmultiple(start,end,content):
if end != "" and start != "":
pattern = re.compile(f'{re.escape(start)}(.*?){re.escape(end)}', re.DOTALL)
elif end == "":
pattern = re.compile(f'{re.escape(start) + r'\s*(.*)'}')
elif start=="":
pattern = re.compile(f'{r'^(.*?)' + re.escape(end)}')
matches = pattern.findall(content)
result = {}
reslist=[]
for i, match in enumerate(matches, 0):
result[i] = match
for i in result.values():
reslist.append(i)
return reslist
def writehtml(html,title):
# Write HTML content to file
with open(os.path.join('cache',title+".txt"), "w", errors="ignore",encoding="utf-8") as fp:
fp.write(html)
print("Great!")
#Input: string
#ourput: string
#Use: read and return the content of a file named input
def readhtml(title):
with open(os.path.join('cache',title+'.txt'),"r",encoding="utf-8") as fp:
content=fp.read()
return content
#Input: string of title, dictionary of information, list of keys
#Output: None
#Use: append the information to a csv named of string of title
def append_csv(title, information,keys):
with open(title, "a", encoding="utf_8", newline="") as fp:
writer = csv.DictWriter(fp, fieldnames=keys)
writer.writerows(information)
def products(url, browser):
browser.visit(url)
while captcha():
time.sleep(10)
html=browser.html
productlist=searchmultiple('<a class="a-link-normal s-no-outline" tabindex="-1" href="','">',html)
for i in range(0,len(productlist)):
productlist[i]="https://www.amazon.com"+productlist[i]
return productlist
def comment(url,browser,index):
#browser = Browser('chrome')
#url = "https://www.amazon.com/Discourse-Method-Meditations-First-Philosophy/product-reviews/0872204200/ref=cm_cr_dp_d_show_all_btm?ie=UTF8&reviewerType=all_reviews"
browser.visit(url)
while captcha():
time.sleep(10)
i=0
html=browser.html
writehtml(html,str(index)+'comment'+str(i))
i+=1
while True:
try:
new_url=searchsingle('<link rel="next" href="','">',html)
browser.visit(new_url)
time.sleep(random.uniform(0.5,1))
while captcha():
time.sleep(10)
html=browser.html
writehtml(html,str(index)+'comment'+str(i))
i+=1
except:
break
return i
def commentmining(index, pagenumber):
allcomment=[]
for i in range(0,pagenumber):
try:
commenthtml=readhtml(str(index)+'comment'+str(i))
comments=searchmultiple('-review-card" class="a-row a-spacing-none">','<div class="a-row review-comments comments-for',commenthtml)
except:
print("Comment not got")
continue
for i in range(0,len(comments)):
productcomment={}
try:
commentstitle=searchsingle('<span class="a-letter-space"></span>','</a>',comments[i])
titlewash=["\n",'<span class="cr-original-review-content">','</span><span class="cr-translated-review-content aok-hidden"></span>','']
for a in titlewash:
commentstitle=commentstitle.replace(a,"")
except:
commentstitle=''
print('Title not get')
try:
commentsrating=searchsingle('review-rating"><span class="a-icon-alt">','</span>',comments[i])
except:
commentsrating=''
print('Rating not get')
try:
commentsbody=searchsingle('<span data-hook="review-body" class="a-size-base review-text review-text-content">','</span>',comments[i])
bodywash = ["\n", '<span class="cr-original-review-content">','<br>',"</br>"]
for b in bodywash:
commentsbody=commentsbody.replace(b,"")
except:
commentsbody=''
print('Body not get')
try:
commentsdate=searchsingle('<span data-hook="review-date" class="a-size-base a-color-secondary review-date">','</span>',comments[i])
except:
commentsdate=''
print('Date not get')
productcomment['id']=index
productcomment['Comments-Title']=commentstitle.lstrip()
productcomment['Comments-Rating']=commentsrating
productcomment['Comments-Body']=commentsbody.lstrip()
productcomment['Comments-Date']=commentsdate
allcomment.append(productcomment)
return allcomment
def information(index,url,browser):
browser.visit(url)
while captcha():
time.sleep(10)
html=browser.html
writehtml(html,str(index)+'information')
return html
def informationmining(index):
information={}
html=readhtml(str(index)+'information')
try:
name = searchsingle('<meta name="title" content="', '"/>', html)
except:
print("Name not got")
name=''
try:
rating = searchsingle('class="reviewCountTextLinkedHistogram noUnderline" title="', '">', html)
except:
print("Rating not get")
rating=''
try:
price = searchsingle('<span class="a-offscreen">US$', '</span>', html)
except:
print("Price not get")
price=''
information['id']=index
information['Name'] = name
information['Rating'] = rating
information['price'] = price
return information
if os.path.exists('cache'):
shutil.rmtree('cache')
os.makedirs('cache',exist_ok=True)
productlist=[]
browser = Browser('chrome')
browser.visit('https://www.amazon.com')
while True:
url=str(browser.url)
if 's?k=' in url:
productlist=products(url,browser)
listlength=len(productlist)
if listlength>48:
continue
else:
break
print(listlength)
pagenumbers=[]
for i in range(0, listlength):
try:
html=information(i,productlist[i],browser)
commenturl=searchsingle('<a data-hook="see-all-reviews-link-foot" class="a-link-emphasis a-text-bold" href="','">',html)
index=comment('https://www.amazon.com'+commenturl, browser,i)
pagenumbers.append(index)
except:
pagenumbers.append(0)
continue
print(pagenumbers)
listlength=48
commentkey=['id','Comments-Title','Comments-Rating','Comments-Body','Comments-Date']
allcomment=[]
allinformation=[]
keys=[]
for i in range(0,listlength):
try:
allinformation.append(informationmining(i))
allcomment+=commentmining(i,int(pagenumbers[i]))
except:
continue
for i in allinformation:
for a in i.keys():
if a not in keys:
keys.append(a)
keyword=input("What is your keyword?: ")
with open(keyword+"Product.csv", "w", encoding="utf-8", newline="") as fp:
writer = csv.DictWriter(fp, fieldnames=keys)
writer.writeheader()
append_csv(keyword+"Product.csv",allinformation,keys)
with open(keyword+"Comment.csv", "w", encoding="utf-8", newline="") as fp:
writer = csv.DictWriter(fp, fieldnames=commentkey)
writer.writeheader()
append_csv(keyword+"Comment.csv",allcomment,commentkey)
browser.quit()