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There should be one—--and preferably only one –--obvious way to do it.
                                                                                ----Õª×ÔThe Zen of Python, by Time Peters
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def build(user, build_name):
if not is_user_valid(user):
redirect("/auth/login/")
return False
#do something here
return create_building(build_name) 
   ÔÚbuildÕâ¸ö·½·¨ÖУ¬Ç°3ÐÐÊÇÓÃÀ´¼ì²âÍæ¼ÒÊÇ·ñÒѾ­ÑéÖ¤¹ýµÄ£¬Èç¹ûÊÇ·ÇÑéÖ¤µÄÍæ¼Ò£¬¾ÍÖØ¶¨Ïòµ½µÇÂ½Ò³Ãæ£»Èç¹ûÊÇÑéÖ¤¹ýµÄÍæ¼Ò£¬¾Í¸øËû½¨ÔìËûÏëÒªµÄ½¨Öþ¡£
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if not is_user_valid(user):
redirect("/auth/login/")
log_warning(" %s is trying to enter without permission!" %(user["name"]))
return False  
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Q:I am searching for is a way to execute AHK commands from a Python script. Is this possible?
A:Yes. Here is an example. 
tested with python2.6, requires AutoHotkey.dll in the working directory or path... 
ahkpython.py:
#Persistent
dllc ......

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Python´úÂë 
 try:    
  raise Exception("a", "b")    
    except Exception,e:    
  print e    
    finally:    
  print "final"    
('a', ......

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