On Mon, Mar 21, 2016 at 05:21:21PM +0100, c.bu...@posteo.jp wrote: > > ReferenceAuthor is an instance of sqlalchemy.Table, so you can refer > > to its columns as ReferenceAuthor.c.Index. > > Ah nice. But something is still wrong. > Part of the query: > > .join(ReferenceAuthor, > ReferenceAuthor.c.Index=0) \ > > result in > ReferenceAuthor.c.Index=0) \ > ^ > > SyntaxError: keyword can't be an expression > > Not sure what is wrong here. But I think c.Index doesn't exist?
That's not it, try:
q.join(ReferenceAuthor, ReferenceAuthor.c.Index == 0)
If you use a single equals sign, Python understands that as an attempt
to use a keyword argument; keyword arguments need to be valid Python
identifiers, not arbitrary expressions. That's why it gave you a
SyntaxError.
In this case, you do not want to use a keyword argument, but an
ordinary expression that gets translated into SQL by SQLAlchemy.
Good luck,
Michal
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