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Update 2-4-practice-baidu-baike.py #8

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Update 2-4-practice-baidu-baike.py #8

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14 changes: 10 additions & 4 deletions source_code/2-4-practice-baidu-baike.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,24 +2,30 @@
from urllib.request import urlopen
import re
import random

from urllib.parse import quote

base_url = "https://baike.baidu.com"

his = ["/item/%E7%BD%91%E7%BB%9C%E7%88%AC%E8%99%AB/5162711"]

for i in range(20):
# dealing with Chinese symbols
url = base_url + his[-1]

html = urlopen(url).read().decode('utf-8')
soup = BeautifulSoup(html, features='lxml')
print(i, soup.find('h1').get_text(), ' url: ', his[-1])

# find valid urls
sub_urls = soup.find_all("a", {"target": "_blank", "href": re.compile("/item/(%.{2})+$")})
sub_urls = soup.find_all("a", {"target": "_blank", "href": re.compile("^(/item/)((%.{2})+|[\u4e00-\u9fa5]+)$")})

if len(sub_urls) != 0:
his.append(random.sample(sub_urls, 1)[0]['href'])
temp=random.sample(sub_urls, 1)[0]['href']
if len(re.findall("([\u4e00-\u9fa5]+)",temp))==0:
his.append(temp)
else:
a,=re.findall("([\u4e00-\u9fa5]+)", temp)
b="/item/"+quote(a)
his.append(b)
else:
# no valid sub link found
his.pop()