python编程-24：实例1-中国大学排名爬虫_彭世瑜_新浪博客
【摘要】
源码：
输出优化前
#CrawUnivRankingA.py import requests from bs4 import BeautifulSoup import bs4 &nb...
源码：
输出优化前
- #CrawUnivRankingA.py
- import requests
- from bs4 import BeautifulSoup
- import bs4
- def getHTMLText(url):
- try:
- r = requests.get(url, timeout=30)
- r.raise_for_status()
- r.encoding = r.apparent_encoding
- return r.text
- except:
- return ""
- def fillUnivList(ulist, html):
- soup = BeautifulSoup(html, "html.parser")
- for tr in soup.find('tbody').children:
- if isinstance(tr, bs4.element.Tag):
- tds = tr('td')
- ulist.append([tds[0].string, tds[1].string, tds[3].string])
- def printUnivList(ulist, num):
- print("{:^10}\t{:^6}\t{:^10}".format("排名","学校名称","总分"))
- for i in range(num):
- u=ulist[i]
- print("{:^10}\t{:^6}\t{:^10}".format(u[0],u[1],u[2]))
- def main():
- uinfo = []
- url = 'http://www.zuihaodaxue.cn/zuihaodaxuepaiming2016.html'
- html = getHTMLText(url)
- fillUnivList(uinfo, html)
- printUnivList(uinfo, 20) # 20 univs
- main()
输出优化后：
- #CrawUnivRankingB.py
- import requests
- from bs4 import BeautifulSoup
- import bs4
- def getHTMLText(url):
- try:
- r = requests.get(url, timeout=30)
- r.raise_for_status()
- r.encoding = r.apparent_encoding
- return r.text
- except:
- return ""
- def fillUnivList(ulist, html):
- soup = BeautifulSoup(html, "html.parser")
- for tr in soup.find('tbody').children:
- if isinstance(tr, bs4.element.Tag):
- tds = tr('td')
- ulist.append([tds[0].string, tds[1].string, tds[3].string])
- def printUnivList(ulist, num):
- tplt = "{0:^10}\t{1:{3}^10}\t{2:^10}"
- print(tplt.format("排名","学校名称","总分",chr(12288)))
- for i in range(num):
- u=ulist[i]
- print(tplt.format(u[0],u[1],u[2],chr(12288)))
- def main():
- uinfo = []
- url = 'http://www.zuihaodaxue.cn/zuihaodaxuepaiming2016.html'
- html = getHTMLText(url)
- fillUnivList(uinfo, html)
- printUnivList(uinfo, 20) # 20 univs
- main()
文章来源: pengshiyu.blog.csdn.net，作者：彭世瑜，版权归原作者所有，如需转载，请联系作者。
原文链接：pengshiyu.blog.csdn.net/article/details/109661696
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