我昨天安装了一个条带包,现在我的应用程序没有运行。我试图了解问题所在。是否与PyShell
或HTLParser
或其他内容有关。我发布了GAE标签,希望日志中的跟踪可以提供有关问题的线索:
MLStripper instance has no attribute 'rawdata'
Traceback (most recent call last):
File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/_webapp25.py", line 703, in __call__
handler.post(*groups)
File "/base/data/home/apps/ting-1/1.354723388329082800/ting.py", line 2070, in post
pitch_no_tags = strip_tags(pitch_original)
File "/base/data/home/apps/ting-1/1.354723388329082800/ting.py", line 128, in strip_tags
s.feed(html)
File "/base/python_runtime/python_dist/lib/python2.5/HTMLParser.py", line 107, in feed
self.rawdata = self.rawdata + data
AttributeError: MLStripper instance has no attribute 'rawdata'
这是MLStripper:
from HTMLParser import HTMLParser
class MLStripper(HTMLParser):
def __init__(self):
set()
self.fed = []
def handle_data(self, d):
self.fed.append(d)
def get_data(self):
return ''.join(self.fed)
def strip_tags(html):
s = MLStripper()
s.feed(html)
return s.get_data()
MLStripper工作正常,直到昨天。
这些是我的其他问题:
https://stackoverflow.com/questions/8152141/how-to-fix-this-attributeerror-with-htmlparser-py
https://stackoverflow.com/questions/8153300/how-to-fix-a-corrupted-pyshell-py
答案 0 :(得分:25)
您发布的代码存在一两个问题(主要是为了正确初始化HTMLParser
)。
尝试运行此脚本的修订版本:
from HTMLParser import HTMLParser
class MLStripper(HTMLParser):
def __init__(self):
# initialize the base class
HTMLParser.__init__(self)
def read(self, data):
# clear the current output before re-use
self._lines = []
# re-set the parser's state before re-use
self.reset()
self.feed(data)
return ''.join(self._lines)
def handle_data(self, d):
self._lines.append(d)
def strip_tags(html):
s = MLStripper()
return s.read(html)
html = """Python's <code>easy_install</code>
makes installing new packages extremely convenient.
However, as far as I can tell, it doesn't implement
the other common features of a dependency manager -
listing and removing installed packages."""
print strip_tags(html)
答案 1 :(得分:1)
如果覆盖HTMLParser类中的reset方法,也会出现此错误。
在我的情况下,我添加了一个名为reset的方法用于其他一些功能,并发现虽然Python没有告诉你这样做有问题(也没有任何迹象表明我覆盖了任何东西),它打破了HTMLParser类
答案 2 :(得分:0)
您需要在超类HTMLParser中调用 init 。
您也可以使用
class MLStripper(HTMLParser):
def __init__(self):
super(MLStripper, self).__init__()
set()
self.fed = []