def __init__(self):
<EOL>chksum = hashlib.md5()<EOL>chksum.update('<STR_LIT>')<EOL>self.limit_data = []<EOL>self.limit_sum = chksum.hexdigest()<EOL>self.limit_lock = eventlet.semaphore.Semaphore()<EOL>
Initialize the LimitData.  The limit data is initialized to
the empty list.