def to_header(self):
        """Converts the object back into an HTTP header."""
        ranges = []
        for begin, end in self.ranges:
            if end is None:
                ranges.append("%s-" % begin if begin >= 0 else str(begin))
            else:
                ranges.append("%s-%s" % (begin, end - 1))
        return "%s=%s" % (self.units, ",".join(ranges))
def to_header ( self ) : ranges = [ ] for begin , end in self . ranges : if end is None : ranges . append ( "%s-" % begin if begin >= 0 else str ( begin ) ) else : ranges . append ( "%s-%s" % ( begin , end - 1 ) ) return "%s=%s" % ( self . units , "," . join ( ranges ) )
Converts the object back into an HTTP header.