Python change is http://bugs.python.org/issue22032

Partial forward port of b1bf8d64 from 1.7.x. Refs #24193.

Refs #14030.

Thanks to Keryn Knight for the report.

Thanks Tim Graham for review

The failure was introduced in Django by
c7fd9b24 and the change in
Python 3.5 is https://hg.python.org/cpython/rev/a3c345ba3563.

varchar()[] cannot compare itself to text[]

Thanks to joelburton for the patch.

Thanks Tomas Dobrovolny for the report and Tim Graham for the review.

Thanks Łukasz Harasimowicz for the report.

Regression introduced in 0f169098