cpython/Misc/NEWS.d/next/Core and Builtins/2018-05-15-10-48-47.bpo-334...

Add :envvar:`PYTHONPYCACHEPREFIX` environment variable and :option:`-X`
``pycache_prefix`` command-line option to set an alternate root directory for
writing module bytecode cache files.
bpo-33499: Add PYTHONPYCACHEPREFIX env var for alt bytecode cache location. (GH-6834) In some development setups it is inconvenient or impossible to write bytecode caches to the code tree, but the bytecode caches are still useful. The PYTHONPYCACHEPREFIX environment variable allows specifying an alternate location for cached bytecode files, within which a directory tree mirroring the code tree will be created. This cache tree is then used (for both reading and writing) instead of the local `__pycache__` subdirectory within each source directory. Exposed at runtime as sys.pycache_prefix (defaulting to None), and can be set from the CLI as "-X pycache_prefix=path". Patch by Carl Meyer. 2018-06-16 01:40:56 -03:00			Add :envvar:`PYTHONPYCACHEPREFIX` environment variable and :option:`-X`
			``pycache_prefix`` command-line option to set an alternate root directory for
			`writing module bytecode cache files.`