tree 3c6d826edacdae83277bf1010059825ca697d877
parent 3abf7ecbda08629673828895a99cfa07920a0a5b
author Katie Atkinson <katie.atkinson@reddit.com> 1686597836 -0700
committer Yuxuan 'fishy' Wang <fishywang@gmail.com> 1688772360 -0700

THRIFT-5715 Python Exceptions mutable with slots

In Python 3.11 exceptions generated by the compiler can't be used with a
context manager because they are immutable. As of Python 3.11
`contextlib.contextmanager` sets `exc.__traceback__` in the event that
the code in the context manager errors.

As of Thrift v0.18.1 exceptions are generated as immutable by default.
See [PR#1835](https://github.com/apache/thrift/pull/1835) for more
information about why exceptions were made immutable by default.

This change makes all non-Thrift fields mutable when slots is used
without dynamic. This will allow exceptions to be re-raised properly by
the contextmanager in Python 3.11.