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>SQLAlchemy supports multiple-column primary keys, Django ORM does not. What's more to think about?

Exactly. If it wasn't for that restriction we would have begun a test adoption. As soon as I saw that multiple-column keys were a mystery to it, not only did it send me packing but made me question the fitness of django in general, I feel like we may have dodged a serious bullet there (if they can't even get that right, what other surprises lie in wait?)

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It is possible to specify that some column values must be unique together, which makes this point pretty moot for any new project.

That said, if you are planning to work on existing schemas, this can really be a headache.

About other nasty surprises, I have been using Django a lot extensively over the last 4 years, and I can honestly say I haven't find any and I dare you to find a web framework that will allow you to bootstrap a project much faster than Django .

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