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[Python-porting] six.buffer_types?

Shai Berger shai at platonix.com
Sat Jun 14 00:44:18 CEST 2014 
On Friday 13 June 2014 08:33:46 Benjamin Peterson wrote:
> In addition to David said, 

David suggested that memoryview be considered a buffer type on Python2 as well, 
and he is correct, of course. I missed it because the Django code that this 
is, originally, an amendment to, conflates buffer and memoryview on purpose.

So, I correct the suggestion:

if six.PY2:
	buffer_types = buffer, bytearray, memoryview

if six.PY3:
	buffer_types = bytes, bytearray, memoryview


> usually the correct way to use a buffer type
> is to call a buffer type (either memoryview or buffer) on some object
> that supports the buffer interface. I'm curious what you're using the
> list for.
> 
As I said, for an isinstance check. The context is that I am receiving a value 
of unknown type, and need to format it for use as the default value of a 
database table column. If it is binary (buffer) data, it needs to be 
transformed to a string of hexadecimals. Other data types get different 
treatments (the data must be formatted, rather than passed as a parameter, 
because Oracle does not take parameters in schema-changing statements).

Thanks,
	Shai,
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