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Date: Fri, 1 Nov 2024 09:12:13 -0700
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Subject: Re: TypeError: dict is not a sequence
To: thiemo@gelassene-pferde.biz, psycopg <psycopg@lists.postgresql.org>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
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On 11/1/24 08:11, thiemo@gelassene-pferde.biz wrote:
> Hi Jim
> 
>> I suspect the source of the problem is the commented-out line
>>
>>  -- ST_FromGDALRaster(pg_read_binary_file(%s)),
>>
>> in the statement.
> 
> You are right. I was not expecting the comment to be relevant for the 
> parameter replacement. Many thanks for the hint.

That is an SQL(---) comment and I am guessing the parser sees the 
parameter before it gets to the comment.
> 
> I now have an error, not related to psycopg, as far as I can tell.
> 
> psycopg2.errors.InternalError_: RASTER_fromGDALRaster: Could not open 
> bytea with GDAL. Check that the bytea is of a GDAL supported format

This looks to be on the PostGIS end related to the ST_FromGDALRaster() 
function. Does:

select ST_FromGDALRaster(the_field);

work in psql?

> 
>> Maybe the difference in the errors is due to a different version of
>> psycopg? This is what I am using:
>>
>>>>> sys.version
>>> '3.12.3 (main, Sep 11 2024, 14:17:37) [GCC 13.2.0]'
>>> >>> psycopg.__version__
>>> '3.2.3'
> 
> Probably.
>>>> sys.version
> '3.11.2 (main, Aug 26 2024, 07:20:54) [GCC 12.2.0]'
>>>> psycopg.__version__
> '3.1.7'
> 
> 
> Many thanks for your support.
> 
> 
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com