[Python-Dev] Wishlist: dowhile

[Bob Ippolito]

On Jun 14, 2005, at 2:25 AM, Raymond Hettinger wrote:

>> def readby(inp, blocksize=1024):
>>      while True:
>>          data = inp.read(blocksize)
>>          if not data:
>>              break
>>          yield data
>>
>> for data in readby(inp, blocksize):
>>      . . .
>>
>
> readby() relies on the existence of a read() method for inp.
> itertools work with generic iterators, not ones with a specific API.
> Law of Demeter.

islice depends on __getitem__.

-bob