python - Beautifulsoup的语法错误

Question

我已经阅读了很多文档，但是他们没有提供这样的示例。我已经尝试调试了3个多小时，但仍然无法正常工作。

import urllib.request, string, csv
from bs4 import BeautifulSoup

csvfile = open('people.csv', 'w')
csvwriter = csv.writer(csvfile, dialect='excel')

peoplefile = open('people.txt', 'r')
soup = BeautifulSoup(timfile.read())
tag = soup.marker

for tag in soup.find_all('marker'):
    print tag['firstname']
    data=[[tag['firstname'], tag['lastname']]]
    csvwriter.writerows(data)

csvfile.close()
peoplefile.close()

我从命令提示符处收到此消息:

(everything before is fine)...
>>> tag = soup.marker
>>> for tag in soup.find_all('marker'):
...     print tag['firstname']
  File "<stdin>", line 2
    print tag['firstname']
            ^
SyntaxError: invalid syntax
>>>     data=[[tag['firstname'], tag['lastname']]]
  File "<stdin>", line 1
    data=[[tag['firstname'], tag['lastname']]]
    ^
IndentationError: unexpected indent
>>>     csvwriter.writerows(data)
  File "<stdin>", line 1
    csvwriter.writerows(data)
    ^
IndentationError: unexpected indent
>>>
... csvfile.close()
>>> peoplefile.close()
>>>

Answer 1

在python3中，您需要将print视为一个函数:

print(tag['firstname'])

代替

print tag['firstname']

看到这个 Python3 release notes:

The print statement has been replaced with a print() function, with keyword arguments to replace most of the special syntax of the old print statement