为什么我得到一个python ImportError：没有名为html_parser的模块？

Question

我上周把我的机器升级到了约塞米蒂。现在，当我试图运行pelican devserver时，我得到了一个重要提示：

$ ./develop_server.sh start
Starting up Pelican and HTTP server
Traceback (most recent call last):
  File "/usr/local/bin/pelican", line 7, in <module>
    from pelican import main
  File "/Library/Python/2.7/site-packages/pelican/__init__.py", line 20, in <module>
    from pelican.generators import (ArticlesGenerator, PagesGenerator,
  File "/Library/Python/2.7/site-packages/pelican/generators.py", line 23, in <module>
    from pelican.readers import Readers
  File "/Library/Python/2.7/site-packages/pelican/readers.py", line 24, in <module>
    from six.moves.html_parser import HTMLParser
ImportError: No module named html_parser
/usr/bin/python: No module named html_parser
Pelican didn't start. Is the Pelican package installed?
Stale PID, deleting
Stale PID, deleting

我在尝试直接导入时从REPL中得到相同的错误，但模块已安装：

^{pr2}$

我错过了什么明显的东西吗？这是怎么回事？在

Answer 1

为我工作：

from six.moves import html_parser
html = html_parser.HTMLParser()

html.unescape(myString)

这保证了Python2向下兼容。在

Answer 2

六库使用了一些高级的导入魔法。必须以特殊方式导入html_parser。from six.moves import html_parser通常有效。如果您有第三方代码试图以其他方式从six导入，您可以先尝试导入six和/或{}，然后再导入其他任何内容。在