Python在循环中继续不正确

Question

我和BeautifulSoup一起工作，我一直在循环中得到一个错误continue not properly。所以我删除了continue，然后得到了print语句的无效语法错误。我运行的是BS4和Python2.7.5，非常感谢。这是我的密码。在

from bs4 import BeautifulSoup

soup = BeautifulSoup (open("43rd-congress.html"))

final_link = soup.p.a
final_link.decompose()

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. 
   names = str(tds[0].get_text()) 
   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 

print names, years, positions, parties, states, congress

Answer 1

打印/继续时缩进将关闭。如果它是关闭的，except:将看起来像是空的，我不确定Python是否对此满意。在

试着注释掉与Try/except无关的所有内容，看看它是否仍然给出错误。在

Answer 2

既然你似乎有错误，我相信你可能真的在你的文件中有错误的缩进。您的代码应该如下所示：

from bs4 import BeautifulSoup

soup = BeautifulSoup (open("43rd-congress.html"))

final_link = soup.p.a
final_link.decompose()

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. 
       names = str(tds[0].get_text()) 
       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()

       print names, years, positions, parties, states, congress

    except exc:
      print "bad tr string"

在python中，每个代码块都应该使用制表符/空格进行缩进嵌套。把它们混在一起不好。在

在代码中，第一个for循环将遍历所有tr，第二个循环打印所有url。在

但是你忘了缩进第一个应该在for循环中的块。在

编辑

你也不必在你的案例中使用continue。检查我对你代码的编辑。在