# PyPy v7.3.16: release of python 2.7, 3.9, and 3.10, released 2024-04-23

The PyPy team is proud to release version 7.3.16 of PyPy.

This release includes security fixes from upstream CPython, and bugfixes to the garbage collector, described in a gc bug-hunt blog post.

The release includes three different interpreters:

> - PyPy2.7, which is an interpreter supporting the syntax and the features of Python 2.7 including the stdlib for CPython 2.7.18+ (the `+` is for backported security updates)

> - PyPy3.9, which is an interpreter supporting the syntax and the features of Python 3.9, including the stdlib for CPython 3.9.19.

> - PyPy3.10, which is an interpreter supporting the syntax and the features of Python 3.10, including the stdlib for CPython 3.10.14.

The interpreters are based on much the same codebase, thus the multiple release. This is a micro release, all APIs are compatible with the other 7.3 releases. It follows after 7.3.15 release on Jan 15, 2024

We recommend updating. You can find links to download the v7.3.16 releases here:

> https://pypy.org/download.html

We would like to thank our donors for the continued support of the PyPy project. If PyPy is not quite good enough for your needs, we are available for direct consulting work. If PyPy is helping you out, we would love to hear about it and encourage submissions to our blog via a pull request to https://github.com/pypy/pypy.org

We would also like to thank our contributors and encourage new people to join the project. PyPy has many layers and we need help with all of them: bug fixes, PyPy and RPython documentation improvements, or general help with making RPython's JIT even better.

If you are a python library maintainer and use C-extensions, please consider making a HPy / CFFI / cppyy version of your library that would be performant on PyPy. In any case, both cibuildwheel and the multibuild system support building wheels for PyPy.

## What is PyPy?

PyPy is a Python interpreter, a drop-in replacement for CPython It's fast (PyPy and CPython 3.7.4 performance comparison) due to its integrated tracing JIT compiler.

We also welcome developers of other dynamic languages to see what RPython can do for them.

We provide binary builds for:

> - x86 machines on most common operating systems (Linux 32/64 bits, Mac OS 64 bits, Windows 64 bits)

> - 64-bit ARM machines running Linux (`aarch64`).

> - Apple M1 arm64 machines (`macos_arm64`).

> - s390x running Linux

PyPy support Windows 32-bit, Linux PPC64 big- and little-endian, and Linux ARM 32 bit, but does not release binaries. Please reach out to us if you wish to sponsor binary releases for those platforms. Downstream packagers provide binary builds for debian, Fedora, conda, OpenBSD, FreeBSD, Gentoo, and more.

## Changelog

### For all versions

- Make some RPython code Python3 compatible, including supporting print()

- Make `test_transformed_gc` tests more stable

- Document the `%d` feature in `PYPYLOG` env var file name

- Update vendored `pycparser` for its 2.22 release

- Raise default gc nursery size to 4MB (#4939)

#### Bugfixes

- Fix the action dispatcher in garbage collector hooks (#4899)

- Fix `'const'` in signature of `gdbm_open` (#4926)

- Fix garbage collector incminimark `arraycopy` incrementality bug (#4925, #3959)

- Fix pinning/shadow interaction bugs in the incminimark GC (#4900)

#### Speedups and enhancements

- Move `uint_mul_high` to `rarithmetic` and add support for it in the metainterp

- Add a `setattr` shortcut to `StdObjspace` like the existing `getattr`, and implement a `STOR_ATTR` optimization, and extend it to work for adding attributes as well.

- Update CFFI to 1.17.0dev0

- Constant-fold typeptr getfields

- Update to stdlib 3.9.19 including changes to _ssl and vendoring `expat` into the repo

- Implement `dict.__ror__` (#4934)

### Python 3.9+

#### Bugfixes

- `_putwch` on windows accepts a chr not an int (#4881)

- Properly create ppc64 import suffixes for c-extensions (#4878)

- Backport cpython fix to prevent subclassing datetime.timezone (python/cpython#112453)

- Remove top level `__init__.py` from stdlib (#4885)

- Replace `handshake_done` with `SSL_is_init_finished` (bpo-29334 from CPython3.5)

- Fix some subtle `_ssl` incompatibilities in error handling (#4883)

- Port cffi change to better parse repetitive pragmas (python-cffi/cffi#46)

- Port cffi change to better parse complex number semantics on windows (python-cffi/cffi#57)

- Set `tp_doc` when defined in `PyGetSetDef` (#4898)

- Use `Py_UCS4` not `PY_UNICODE` in various `PyUnicode` function input (#4901)

- Make `str.expandtabs()` do the right thing with unicode characters and speed it up (#4920)

- Fix `'const'` in signature of `Tcl_Merge` (#4926)

- Close connection to avoid resource leak in `multiprocessing.managers`

- Fix `str.__mul__(str)` to raise rather than return `NotImplemented`

- Sync pure-python `stat.py` with upstream CPython3.13 to match C `_stat` implementation of filemode

#### Speedups and enhancements

- Add `PyModule_GetFilenameObject` and `PyModule_GetNameObject`

- Speed up `normalize_exception` by reduced copying

- Update xz-utils to 5.4.6 when building _lzma

- Add `sys._git`

### Python 3.10

#### Enhancements

- Make stack depth computation more precise. Stack depths of various instructions were off by one for historical reasons. The errors carefully balanced each other out. Now code that does exception handling has smaller maximum stack sizes.