tree 78b38c45fc8cf8104c912e2415eefb6b63103c01
parent 45a9827f0f455d377ae87d9a35349c10181d6893
author Elvis Pranskevichus <elvispranskevichus@pinterest.com> 1551974434 -0500
committer D. Can Celasun <can@dcc.im> 1576010664 +0000
gpgsig -----BEGIN PGP SIGNATURE-----
 
 iQEzBAABCAAdFiEECEWJMJTRpqzgHknn+gOGDXtMOYYFAl3wA6gACgkQ+gOGDXtM
 OYYhQQf+KF9k9NbqLEaTDFbI18imtQIDoe64m7l/NOQW2eJE5DJp3xFjdFHXSFj8
 4w1SPKRNdHXQ/5uMrOPYXx3B4fV8k5zH7q4dLk5IzNuzibrFxTXGaSylQ2AJ9+iS
 /i9Af/b4c+q/jAOVZsoc7L+N9/K6JpKYOchZubc1oZV/pVSRJfruZ6ZDUNRyZAYC
 zT9tvfirPBhwRBx2QioJNgQwAkcTRAbtE+4+OlHPxJNdKmZJktC1KN50InP/NP3e
 zqL46FR97sWIqrgtDE0x5R//PHowuJxRKNKvq9o3WmM4qJ4Lt+vOARJOIlNuTcmJ
 xVcrKNFPRPettz8YvmvGZFNsS3PFzg==
 =EKe5
 -----END PGP SIGNATURE-----

THRIFT-4002: Make generated exception classes immutable by default

Currently, the generated exception classes are not hashable under
Python 3 because of the generated `__eq__` method.  Exception objects
are generally expected to be hashable by the Python standard library.
Post-construction mutation of an exception object seems like a very
unlikely case, so enable hashing for all exceptions by making them
immutable by default.  This also adds a way to opt-out of immutability
by setting the `python.immutable` annotation to `"false"`.