> However I cannot catch for this error, I can only catch for
"sqlalchemy.exc.ProgrammingError".
Why is that?
James
On Wed, Dec 4, 2019 at 6:03 PM Jonathan Vanasco <jonat...@findmeon.com>
wrote:
>
> Personally, I would handle the check like this:
>
> ERRORS_UNDEFINED_TABLE = (psycopg2.errors.UndefinedTable, )
>
> try:
> res = conn.execute(stmt)
> except sa.exc.ProgrammingError as err:
> if isinstance(err.orig, ERRORS_UNDEFINED_TABLE):
> print('Table does not exist')
> raise
>
>
> This would allow you to update the `ERRORS_UNDEFINED_TABLE` tuple in a
> central place, and allow you to more easily catch this situation in other
> databases if needed. I've used this technique in a few projects that are
> built for postgres, but support mysql and use sqlite for some tests.
>
>
> On Wednesday, December 4, 2019 at 5:52:15 PM UTC-5, Zsolt Ero wrote:
>>
>> Thanks. So is the following code correct for psycopg2 specific scenario?
>>
>> try:
>> res = conn.execute(stmt)
>> except sa.exc.ProgrammingError as err:
>> if isinstance(err.orig, psycopg2.errors.UndefinedTable):
>> print('Table does not exist')
>> else:
>> raise err
>>
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> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
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