path: root/Misc/NEWS.d/next/Library/2018-03-18-17-38-48.bpo-32953.t8WAWN.rst

If a non-dataclass inherits from a frozen dataclass, allow attributes to be
added to the derived class.  Only attributes from the frozen dataclass
cannot be assigned to.  Require all dataclasses in a hierarchy to be either
all frozen or all non-frozen.