Re: TypeError: dict is not a sequence

From: Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
To: thiemo(at)gelassene-pferde(dot)biz, psycopg <psycopg(at)lists(dot)postgresql(dot)org>
Subject: Re: TypeError: dict is not a sequence
Date: 2024-11-01 16:12:13
Message-ID: 99a9cec1-09a0-41fb-91b2-d153c4ccf5a4@aklaver.com
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On 11/1/24 08:11, thiemo(at)gelassene-pferde(dot)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(dot)klaver(at)aklaver(dot)com

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