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winvestor-crawling-vietstock.py
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winvestor-crawling-vietstock.py
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"""1. Crawling <http://vietstock.vn/doanh-nghiep/hoat-dong-kinh-doanh.htm> for the news.
In each news, pull out ArticleID, Title, Summary, URL, datetime && StockCode, note them down in 1 csv file with index.
In this case, return <???> when a news has no StockCode (UpCOM or common news).
2. Creating 2 folders: <html> && <content>,
parsing each line in csv file to get into each URL,
pulling data from that URL and save into <html> folder,
pulling content from that URL and save into <content> folder.
"""
import urllib3
import re
import codecs
import csv
import os
import random
from time import sleep
from multiprocessing import Process
http = urllib3.PoolManager()
my_data = []
min = 1
max = int(input("[?] Enter the last page of <http://vietstock.vn/doanh-nghiep/hoat-dong-kinh-doanh.htm>:\n>>> "))
IDs = []
newIDs = []
pattern0 = re.compile(r"'")
pattern1 = re.compile(r'"')
pattern2 = re.compile(r";")
pattern3 = re.compile(r"\\u003c")
pattern4 = re.compile(r"\\u003e")
pattern5 = re.compile(r"\\r\\n")
pattern6 = re.compile(r"\\")
try: os.mkdir("html")
except: pass
try: os.mkdir("content")
except: pass
path = os.getcwd()
def data():
###task1 function###
global ArticleID
ArticleID = re.findall('"ArticleID":([0-9]+)', read)
global Title
Title = re.findall('"Title":"(.+?)"', read)
Title = pattern0.sub("-", Title[0])
Title = pattern1.sub("-", Title)
Title = pattern2.sub("-", Title)
global Head
Head = re.findall('"Head":"(.+?)"', read)
Head = pattern0.sub("-", Head[0])
Head = pattern1.sub("-", Head)
Head = pattern2.sub("-", Head)
global URL
URL = re.findall('"URL":"(.+?)"', read)
global timestring
timestring = re.findall('"timestring":"(.+?)"', read)
global StockCode
StockCode = re.findall('"StockCode":"(.+?)"', read)
def html_content(index, ArticleID):
###task2 function###
print("> Checking URL at row %d..." %index)
req = http.request("POST", "http://vietstock.vn/_Partials/ContentGetArticle",
{"articleId":ArticleID})
try:
resp = codecs.decode(req.data)
except Exception as e:
print(e)
resp = pattern3.sub("<", resp)
resp = pattern4.sub(">", resp)
resp = pattern5.sub("\n", resp)
resp = pattern6.sub("", resp)
pTitle = re.findall('<p class="pTitle">(.+?)</p>', resp)
if pTitle == []:
pTitle = re.findall('<font class="pTitle">(.+?)</font>', resp)
pHead = re.findall('<p class="pHead">(.+?)</p>', resp)
if pHead == []:
pHead = re.findall('<font class="pHead">(.+?)</font>', resp)
pBodies = re.findall('<p class="pBody">(.+?)</p>', resp)
os.chdir("%s/html" %path)
f = open("%d.html" %index, "w")
f.write(resp)
f.close()
os.chdir("%s/content" %path)
f = open("%d.txt" %index, "a")
try:
f.write(pTitle[0] + "\n")
f.write(pHead[0] + "\n")
for pBody in pBodies:
f.write(pBody + "\n")
f.close()
except Exception as e:
print(e)
def list_slicer(list, piece = 5):
###slicing a list to piece-sized small ones###
for i in range(0, len(list), piece):
yield list[i:(i + piece)]
print("[*] Starting...")
try:
f = csv.reader(open("id-title-head-url-time-stock.csv", "r"), delimiter = ";")
for row in f: IDs.append(int(row[1]))
lenIDs = len(IDs)
for i in range(min, (max+1)):
print("> Updating...")
req = http.request("POST", "http://vietstock.vn/_Partials/ListPageArticle",
{"item":20,"page":i,"channelid":"737"})
resp = codecs.decode(req.data)
reads = resp.split('},{"row"')
for read in reads:
data()
if int(ArticleID[0]) not in IDs:
if StockCode != []:
my_data.append((lenIDs, ArticleID[0], Title, Head, URL[0], timestring[0], ",".join(StockCode).strip()))
newIDs.append((lenIDs, int(ArticleID[0])))
lenIDs += 1
else:
my_data.append((lenIDs, ArticleID[0], Title, Head, URL[0], timestring[0], "???"))
newIDs.append((lenIDs, int(ArticleID[0])))
lenIDs += 1
else: break
if int(ArticleID[0]) in IDs: break
with open("id-title-head-url-time-stock.csv", "a") as f:
for (i,a,t,h,u,ts,s) in my_data:
f.write("%d; %s; %s; %s; http://vietstock.vn%s; %s; %s\n" %(i,a,t,h,u,ts,s))
print("[*] Updated!!!")
except FileNotFoundError:
lenIDs = 0
for i in range(min, (max+1)):
print("> Inspecting page number %003d/%003d..." %(i,max))
req = http.request("POST", "http://vietstock.vn/_Partials/ListPageArticle",
{"item":20,"page":i,"channelid":"737"})
resp = codecs.decode(req.data)
reads = resp.split('},{"row"')
for read in reads:
data()
if StockCode != []:
my_data.append((lenIDs, ArticleID[0], Title, Head, URL[0], timestring[0], ",".join(StockCode).strip()))
newIDs.append((lenIDs, int(ArticleID[0])))
lenIDs +=1
else:
my_data.append((lenIDs, ArticleID[0], Title, Head, URL[0], timestring[0], "???"))
newIDs.append((lenIDs, int(ArticleID[0])))
lenIDs +=1
with open("id-title-head-url-time-stock.csv", "w") as f:
for (i,a,t,h,u,ts,s) in my_data:
f.write("%d; %s; %s; %s; http://vietstock.vn%s; %s; %s\n" %(i,a,t,h,u,ts,s))
print("[*] Done inspecting!!!")
for newID in list_slicer(newIDs):
for (index, ArticleID) in newID:
Process(target = html_content, args = (index, ArticleID,)).start()
sleep(random.randint(0, 1))
#for (index,ArticleID) in newIDs: html_content(index, ArticleID)
"""When I did it without multi processing, it ran out smoothly.
But with multi process, even if I sliced the list into very small parts, sometimes the data which came back could not decode in utf-8.
And I don't even know why :(
So I have to take a random sleep time after each request...
And it runs perfectly up to now!
But it is even slowlier than the old technique :(
PS:
All the <try> && <except> blocks (except the main one) are there for the defense :D
"""