empty_volume_cache.py 文件源码

def Purge(self, amt_to_free, callback):
        print "Purging", amt_to_free, "bytes..."
        # we ignore amt_to_free - it is generally what we returned for
        # GetSpaceUsed
        try:
            for d in self._GetDirectories():
                os.path.walk(d, self._WalkCallback, (callback, None))
        except pythoncom.error, (hr, msg, exc, arg):
            # This will be raised by the callback when the user selects 'cancel'.
            if hr != winerror.E_ABORT:
                raise # that's the documented error code!
            print "User cancelled the operation"