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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_wire(self, file = None, compress = None, origin = None):
 """Convert name to wire format, possibly compressing it. @param file: the file where the name is emitted (typically a cStringIO file). If None, a string containing the wire name will be returned. @type file: file or None @param compress: The compression table. If None (the default) names will not be compressed. @type compress: dict @param origin: If the name is relative and origin is not None, then origin will be appended to it. @type origin: dns.name.Name object @raises NeedAbsoluteNameOrOrigin: All names in wire format are absolute. If self is a relative name, then an origin must be supplied; if it is missing, then this exception is raised """


        if file is None:
            file = cStringIO.StringIO()
            want_return = True
        else:
            want_return = False

        if not self.is_absolute():
            if origin is None or not origin.is_absolute():
                raise NeedAbsoluteNameOrOrigin
            labels = list(self.labels)
            labels.extend(list(origin.labels))
        else:
            labels = self.labels
        i = 0
        for label in labels:
            n = Name(labels[i:])
            i += 1
            if not compress is None:
                pos = compress.get(n)
            else:
                pos = None
            if not pos is None:
                value = 0xc000 + pos
                s = struct.pack('!H', value)
                file.write(s)
                break
            else:
                if not compress is None and len(n) > 1:
                    pos = file.tell()
                    if pos < 0xc000:
                        compress[n] = pos
                l = len(label)
                file.write(chr(l))
                if l > 0:
                    file.write(label)
        if want_return:
            return file.getvalue()