2010/6/12 David Zaslavsky <diaz...@ellipsix.net>: > Hi, > > The problem is that when you make this call: >> proc.cmdline() > there are really two steps involved. First you are accessing proc.cmdline, > then you are calling it. You could think of it as this: > func = proc.cmdline > func() > __getattribute__ is able to modify how the first step works, but not the > second. And it is the second step where the OSError gets raised. > > You could get around this by returning a wrapper function from > __getattribute__, something like this I think: > > def __getattribute__(self, name): > f = object.__getattribute__(self, name) > # here you should really check whether it's a function > def wrapper(self, *args, **kwargs) > print "here 1!" > try: > f(*args, **kwargs) > except OSError, err: > print "here 2!" > if err.errno == errno.ESRCH: > raise NoSuchProcess > if err.errno == errno.EPERM: > raise AccessDenied > return wrapper > > That way "func" gets set to the wrapper function, which will handle your > exception as you want. > > :) David > -- > http://mail.python.org/mailman/listinfo/python-list >
Clear, thanks. Isn't there a prettier/common way to do this? A __methodcall__(self, method_obj) special method or something? Has something like that ever been proposed for inclusion? --- Giampaolo http://code.google.com/p/pyftpdlib http://code.google.com/p/psutil -- http://mail.python.org/mailman/listinfo/python-list
