I am still having this problem, but I have a messy workaround.
If I install PyIndi via pip *before* installing the PPA (and, thus using the libraries provided by Ubuntu, v1.8.5) the import works. I am then able to install the PPA, update the libraries and install the drivers of my CCD and everything seems to continue to work OK.
However, I think this is a bug that needs to be solved. Anyone knows where to report it?

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