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baike_baidu.py
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baike_baidu.py
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#!/usr/bin/env python3
#coding: utf-8
from grab_stack import get_matched_link, get_page_content
from db import DB
import os
import os.path as osp
# 从 data/key_words.txt 中加载
keywords_fname = "data/key_words.txt"
_key_words = [
]
for name in os.listdir("data"):
fname = osp.join("data", name)
if osp.isfile(fname):
with open(fname) as f:
data = f.read()
_key_words.extend(data.split())
print("ennn, there are {} key_words".format(len(_key_words)))
_sites = [
"http://baike.baidu.com/wenhua",
"http://baike.baidu.com/ziran",
"http://baike.baidu.com/dili",
"http://baike.baidu.com/lishi",
"http://baike.baidu.com/shenghuo",
"http://baike.baidu.com/shehui",
"http://baike.baidu.com/yishu",
"http://baike.baidu.com/renwu",
"http://baike.baidu.com/jingji",
"http://baike.baidu.com/keji",
"http://baike.baidu.com/tiyu",
]
_renwu = [
("html", None),
("body", None),
("div", {
"class": ["grid"]
}),
("div", {
"class": ["g-row", "container"]
}),
("div", {
"class": ["g69"],
}),
("div", {
"class": ["g-row", "field-common"]
}),
("div", None),
("div", {
"class": ["news-list"]
}),
("ul", {
"class": ["nslog:6522"]
}),
("li", None)
]
def my_get_urls(tag):
links = tag.find_all("a")
urls = []
for link in links:
if link["href"] not in urls:
urls.append(link["href"])
return urls
_content_pattern = [
("html", None),
("body", None),
("div", {
"class": ["body-wrapper"]
}),
("div", {
"class": ["content-wrapper"]
}),
("div", {
"class": ["content"]
}),
("div", {
"class": ["main-content"]
}),
("div", {
"class": ["para"]
})
]
def my_get_content(tag):
return tag.text
def grab_site(logger, baseurl):
logger.info("to grab {}".format(baseurl))
urls = get_matched_link(logger, _renwu, baseurl, my_get_urls)
db = DB()
for url in urls:
if db.has(url):
continue
txt = ""
cs = get_page_content(logger, _content_pattern, url, my_get_content)
for c in cs:
txt += c
if txt:
db.save(url, txt)
logger.info("{} saved {} bytes".format(url, len(txt)))
def grab(logger):
for baseurl in _sites:
grab_site(logger, baseurl)
def grab_search(logger, word):
db = DB()
if db.has_keyword(word):
return
import requests
url = "http://baike.baidu.com/search/word?word={}".format(word)
sess = requests.session()
sess.headers["User-Agent"] = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.131 Safari/537.36"
while 1:
res = sess.get(url)
if res.status_code == 200:
break
elif res.status_code == 302:
url = res.headers["Location"]
if url[:2] == "//":
url = "http:" + url
elif url[0] == '/':
url = "http://baike.baidu.com" + url
logger.info("GET redir url: {}".format(url))
else:
logger.error("GET {} err, status ={}".format(url, res.status_code))
return
if db.has(url):
logger.info("word: {} exists".format(word))
return
logger.info("using item url: {}".format(url))
txt = ""
cs = get_page_content(logger, _content_pattern, url, my_get_content)
for c in cs:
txt += c
db.save(url, txt)
logger.info("{} saved {} bytes".format(url, len(txt)))
def grab_key_words(logger):
for word in _key_words:
grab_search(logger, word)
if __name__ == "__main__":
import logging
import argparse
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger()
ap = argparse.ArgumentParser()
ap.add_argument("word")
args = ap.parse_args()
if args.word == "all":
grab_key_words(logger)
else:
grab_search(logger, args.word)