Sample use case in the documentation doesn't work

[jamesguo71]

This is the sample use of ghost.py, http://jeanphix.me/Ghost.py/#sample

I copy pasted it to pytest.py and tested it, but it doesn't work.

It returns:

Traceback (most recent call last):
File "C:\Users\JamesGuo\Desktop\pytest.py", line 4, in
ghost.open('http://www.openstreetmap.org/')
File "C:\Python27\lib\site-packages\ghost\ghost.py", line 431, in open
return self.wait_for_page_loaded()
File "C:\Python27\lib\site-packages\ghost\ghost.py", line 573, in wait_for_page_loaded
'Unable to load requested page')
File "C:\Python27\lib\site-packages\ghost\ghost.py", line 554, in wait_for
raise Exception(timeout_message)
Exception: Unable to load requested page
QWaitCondition: Destroyed while threads are still waiting

Environment:
Python 2.7 , Windows 7 , PyQt 4.8

Anyone came across this problem? Thanks.