def __init__(self, field):
self.specials = '<STR_LIT>'<EOL>self.pos = <NUM_LIT:0><EOL>self.LWS = '<STR_LIT>'<EOL>self.CR = '<STR_LIT:\r\n>'<EOL>self.atomends = self.specials + self.LWS + self.CR<EOL>self.phraseends = self.atomends.replace('<STR_LIT:.>', '<STR_LIT>')<EOL>self.field = field<EOL>self.commentlist = []<EOL>
Initialize a new instance.

        `field' is an unparsed address header field, containing one or more
        addresses.