def __init__(self, debug=False):
self.debug = debug<EOL>try:<EOL><INDENT>self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)<EOL>addr = os.getenv('<STR_LIT>')<EOL>if addr[<NUM_LIT:0>] == '<STR_LIT:@>':<EOL><INDENT>addr = '<STR_LIT>' + addr[<NUM_LIT:1>:]<EOL><DEDENT>self.socket.connect(addr)<EOL><DEDENT>except:<EOL><INDENT>self.socket = None<EOL>if self.debug:<EOL><INDENT>raise<EOL><DEDENT><DEDENT>
Instantiate a new notifier object. This will initiate a connection
        to the systemd notification socket.

        Normally this method silently ignores exceptions (for example, if the
        systemd notification socket is not available) to allow applications to
        function on non-systemd based systems. However, setting debug=True will
        cause this method to raise any exceptions generated to the caller, to
        aid in debugging.