13     def __init__(self, start, end):  argument
15         self.start = start
21             the given length, then return a (start, end) non-inclusive range
26         start, end = self.start, self.end
29             if start < 0:
30                 start += length
31         if _is_content_range_valid(start, end, length):
33             return (start, stop)
53         s,e = self.start, self.end
64             self.start, self.end)
67         return iter((self.start, self.end))
77         start, end = m.groups()
78         if not start:
80         start = int(start)
82             return cls(start, None)
84         if start >= end:
86         return cls(start, end)
94     This header is ``start-stop/length``, where start-stop and length
98     def __init__(self, start, stop, length):  argument
99         if not _is_content_range_valid(start, stop, length):
101                 "Bad start:stop/length: %r-%r/%r" % (start, stop, length))
102         self.start = start
114         if self.start is None:
118         return 'bytes %s-%s/%s' % (self.start, stop, length)
124                 start, stop, length = res.content_range
126         return iter([self.start, self.stop, self.length])
146 def _is_content_range_valid(start, stop, length, response=False):  argument
147     if (start is None) != (stop is None):
149     elif start is None:
152         return 0 <= start < stop
153     elif start >= stop:
160         return 0 <= start < length