当我使用以下代码时。
from bs4 import BeautifulSoup
import csv
soup = BeautifulSoup (open("43rd-congress.htm"))
final_link = soup.p.a
final_link.decompose()
f = csv.writer(open("43rd_congress_all.csv", "w"))
f.writerow(["Name","Years","Position","Party", "State", "Congress", "Link"])
trs = soup.find_all('tr')
for tr in trs:
for link in tr.find_all('a'):
fulllink = link.get ('href')
print fulllink #print in terminal to verify results
tds = tr.find_all("td")
try: #we are using "try" because the table is not well formatted. This allows the program to continue after encountering an error.
names = str(tds[0].get_text()) # This structure isolate the item by its column in the table and converts it into a string.
years = str(tds[1].get_text())
positions = str(tds[2].get_text())
parties = str(tds[3].get_text())
states = str(tds[4].get_text())
congress = tds[5].get_text()
except:
print "bad tr string"
continue #This tells the computer to move on to the next item after it encounters an error
print names, years, positions, parties, states, congress
f.writerow([names, years, posiitons, parties, states, congress, fullLink])
我得到一个名称错误。但是,当我尝试纠正错误时,我在最后一行代码中收到一个错误,指出变量未定义。我已经进行了更正,以使其与社区保持一致。我如何解决它?
我感谢您的帮助。
我在记事本++和powershell中运行它。我在本教程的最后一部分... http://jeriwieringa.com/blog/2012/11/04/beautiful-soup-tutorial-part-1/