如何在带有 dev_appserver.py 的 Google App Engine
我做了必要的步骤，我可以从 shell 成功运行：
pip install lxml -t lib
cd lib
python
>>> from bs4 import BeautifulSoup
>>> import lxml
>>> res = BeautifulSoup("<p>hello</p>","lxml")
>>> print res
<html><body><p>hello</p></body></html>
但是在 Google App Enginedev_appserver.py上没有成功：
from bs4 import BeautifulSoup
import lxml
import lxml
p1 = BeautifulSoup("<p>toto</p>","lxml")
错误是：
Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?
可能是什么问题？
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