SQLAlchemy 0.6beta1: TypeError: Boolean value of this clause is not defined

Gerry Reno

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Mar 1, 2010, 5:11:59 PM3/1/10

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Today I tried out 0.6beta1 and I'm seeing exceptions like this:

TypeError: Boolean value of this clause is not defined

I don't see these in 5.5 so I'm wondering what I need to change.

-Gerry

Rami Chowdhury

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Mar 1, 2010, 5:22:20 PM3/1/10

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Can you provide an example of code which is failing with that error?

-------------
Rami Chowdhury
"Never assume malice when stupidity will suffice." -- Hanlon's Razor
408-597-7068 (US) / 07875-841-046 (UK) / 0189-245544 (BD)

> -Gerry
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Michael Bayer

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Mar 1, 2010, 5:32:21 PM3/1/10

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Rami Chowdhury wrote:
>
> On Mar 1, 2010, at 14:11 , Gerry Reno wrote:
>
>> Today I tried out 0.6beta1 and I'm seeing exceptions like this:
>>
>> TypeError: Boolean value of this clause is not defined
>>
>> I don't see these in 5.5 so I'm wondering what I need to change.
>>
>
> Can you provide an example of code which is failing with that error?

the source of the error is explained here:

http://www.sqlalchemy.org/trac/wiki/06Migration#AnImportantExpressionLanguageGotcha

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