Pyton buffer type vs psycopg2.Binary

Hello,

I just starting to work with bytea fields. I see the binary.py example that uses psycopg2.Binary to 
covert the file data to bytea fields.

But making tests i discover that:

1. When I read the bytea field psycopg2 returns the data as <type 'buffer'> instead psycopg2.Binary.

2. psycopg2.Binary don't support __cmp__, then, if I try to compare two psycopg2.Binary objects is 
always False bacause the comparison is made with the objects id() instead the objects data.

3. In the tests i try to save de data using 'buffer(open(file, "rb").read())' instead of 
'psycopg2.Binary(open(file, "rb").read())' and, at this moment, it works fine.

The question is:

Is there any disadvantage or any other problem if i use the buffer type instead psycopg2.Binary?

Thanks.

-- 
*****************************************
Oswaldo Hernández
oswaldo (@) soft-com (.) es
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