[issue39610] memoryview.__len__ should raise an exception for 0d buffers

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

But iterating it raises different type of exception, wish obscure message.

>>> import ctypes
>>> mem_0d = memoryview(ctypes.c_uint8(42))
>>> list(mem_0d)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NotImplementedError: memoryview: unsupported format <B

Should not '<B' and be equivalent to '>B' and just 'B'? Would not adding support of formats with specified endianess make 0-dimensional memoryview objects iterable?

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nosy: +serhiy.storchaka

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<https://bugs.python.org/issue39610>
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