python2.7 runtime
We started having all kinds of crazy import errors starting on June 13 in one of our projects. This is code that hasn't changed in at least a couple of years, suddenly we are getting the old "ImportError: cannot import name foo"
If I roll back to a recent version from a few days ago, all is fine. It is the weirdest thing. It sort of seems like an environment thing of some sort but I can't imagine what it would be.