CASSPYTHON-14 Drop pypy support

patch by Bret McGuire; reviewed by Bret McGuire and Brad Schoening

Author: absurdfarce

README-dev.rst

@@ -96,7 +96,7 @@ it with the ``PROTOCOL_VERSION`` environment variable::
 
 Testing Multiple Python Versions
 --------------------------------
-Use tox to test all of Python 3.10 through 3.14 and pypy::
+Use tox to test all currently supported versions of the Python runtime::
 
     tox
 

cassandra/cmurmur3.c

@@ -14,13 +14,6 @@
 #include <Python.h>
 #include <stdio.h>
 
-#ifdef PYPY_VERSION
-#define COMPILING_IN_PYPY 1
-#define COMPILING_IN_CPYTHON 0
-#else
-#define COMPILING_IN_PYPY 0
-#define COMPILING_IN_CPYTHON 1
-#endif
 //-----------------------------------------------------------------------------
 // Platform-specific functions and macros
 
@@ -179,13 +172,7 @@ struct module_state {
     PyObject *error;
 };
 
-// pypy3 doesn't have GetState yet.
-#if COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3
 #define GETSTATE(m) ((struct module_state*)PyModule_GetState(m))
-#else
-#define GETSTATE(m) (&_state)
-static struct module_state _state;
-#endif
 
 static PyObject *
 murmur3(PyObject *self, PyObject *args)

cassandra/metadata.py

@@ -1875,9 +1875,6 @@ class BytesToken(Token):
     @classmethod
     def from_string(cls, token_string):
         """ `token_string` should be the string representation from the server. """
-        # unhexlify works fine with unicode input in everythin but pypy3, where it Raises "TypeError: 'str' does not support the buffer interface"
-        if isinstance(token_string, str):
-            token_string = token_string.encode('ascii')
         # The BOP stores a hex string
         return cls(unhexlify(token_string))
 

docs/installation.rst

@@ -3,10 +3,10 @@ Installation
 
 Supported Platforms
 -------------------
-Python 3.10 through 3.14 are supported.  Both CPython (the standard Python
-implementation) and `PyPy <http://pypy.org>`_ are supported and tested.
+Python 3.10 through 3.14 are supported.  Linux, OSX, and Windows are supported.
 
-Linux, OSX, and Windows are supported.
+As of Python driver 4.0.0 only CPython is supported.  Prior versions also explicitly supported PyPy but we no longer
+support this runtime.  See `CASSPYTHON-14 <https://issues.apache.org/jira/browse/CASSPYTHON-14>`_ for additional information.
 
 Installation through pip
 ------------------------
@@ -18,7 +18,8 @@ the same time as the driver itself.  To install the driver*::
 
 You can use ``pip install --pre cassandra-driver`` if you need to install a beta version.
 
-***Note**: if intending to use optional extensions, install the `dependencies <#optional-non-python-dependencies>`_ first. The driver may need to be reinstalled if dependencies are added after the initial installation.
+***Note**: if intending to use optional extensions, install the `dependencies <#optional-non-python-dependencies>`_ first.
+The driver may need to be reinstalled if dependencies are added after the initial installation.
 
 Verifying your Installation
 ---------------------------

docs/performance.rst

@@ -17,12 +17,6 @@ provide this pattern with a synchronous API and tunable concurrency.
 Due to the GIL and limited concurrency, the driver can become CPU-bound pretty quickly. The sections below
 discuss further runtime and design considerations for mitigating this limitation.
 
-PyPy
-----
-`PyPy <http://pypy.org>`_ is an alternative Python runtime which uses a JIT compiler to
-reduce CPU consumption. This leads to a huge improvement in the driver performance,
-more than doubling throughput for many workloads.
-
 Cython Extensions
 -----------------
 `Cython <http://cython.org/>`_ is an optimizing compiler and language that can be used to compile the core files and

pyproject.toml

@@ -6,7 +6,7 @@ requires = ["setuptools", "Cython>=3.0", "tomli"]
 name = "cassandra-driver"
 description = "Apache Cassandra Python Driver"
 version = "3.30.1"
-dependencies = ['geomet>=1.1', "Deprecated>=1.3.1"]
+dependencies = ['geomet>=1.1']
 readme = "README.rst"
 authors = [{name = "DataStax"}]
 license = "Apache-2.0"
@@ -25,7 +25,6 @@ classifiers = [
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: Implementation :: CPython",
-    "Programming Language :: Python :: Implementation :: PyPy",
     "Topic :: Software Development :: Libraries :: Python Modules"
 ]
 

setup.py

@@ -27,7 +27,6 @@
 # ========================== General purpose vals to describe our current platform ==========================
 is_windows = sys.platform.startswith('win32')
 is_macos = sys.platform.startswith('darwin')
-is_pypy = "PyPy" in sys.version
 is_supported_platform = sys.platform != "cli" and not sys.platform.startswith("java")
 is_supported_arch = sys.byteorder != "big"
 is_supported = is_supported_platform and is_supported_arch
@@ -47,15 +46,6 @@
 ===============================================================================
 """
 
-pypy_unsupported_msg = \
-"""
-=================================================================================
-Some optional C extensions are not supported in PyPy. Only murmur3 will be built.
-=================================================================================
-"""
-
-if is_pypy:
-    sys.stderr.write(pypy_unsupported_msg)
 if not is_supported_platform:
     sys.stderr.write(platform_unsupported_msg)
 elif not is_supported_arch:
@@ -72,7 +62,7 @@ def key_or_false(k):
 
 try_murmur3 = key_or_false("build-murmur3-extension") and is_supported
 try_libev = key_or_false("build-libev-extension") and is_supported
-try_cython = key_or_false("build-cython-extensions") and is_supported and not is_pypy
+try_cython = key_or_false("build-cython-extensions") and is_supported
 
 build_concurrency = driver_project_data["build-concurrency"]
 

tests/__init__.py

@@ -16,8 +16,6 @@
 
 import unittest
 import logging
-import sys
-import socket
 import platform
 import os
 from concurrent.futures import ThreadPoolExecutor
@@ -70,4 +68,3 @@ def is_windows():
 
 
 notwindows = unittest.skipUnless(not is_windows(), "This test is not adequate for windows")
-notpypy = unittest.skipUnless(not platform.python_implementation() == 'PyPy', "This tests is not suitable for pypy")

tests/integration/__init__.py

@@ -359,7 +359,6 @@ def _id_and_mark(f):
 lessthandse60 = unittest.skipUnless(DSE_VERSION and DSE_VERSION < Version('6.0'), "DSE version less than 6.0 required")
 lessthandse69 = unittest.skipUnless(DSE_VERSION and DSE_VERSION < Version('6.9'), "DSE version less than 6.9 required")
 
-pypy = unittest.skipUnless(platform.python_implementation() == "PyPy", "Test is skipped unless it's on PyPy")
 requiresmallclockgranularity = unittest.skipIf("Windows" in platform.system() or "asyncore" in EVENT_LOOP_MANAGER,
                                                "This test is not suitible for environments with large clock granularity")
 requiressimulacron = unittest.skipIf(SIMULACRON_JAR is None or CASSANDRA_VERSION < Version("2.1"), "Simulacron jar hasn't been specified or C* version is 2.0")

tests/integration/cqlengine/model/test_model.py

@@ -22,7 +22,6 @@
 from cassandra.cqlengine import models
 from cassandra.cqlengine.models import Model, ModelDefinitionException
 from uuid import uuid1
-from tests.integration import pypy
 from tests.integration.cqlengine.base import TestQueryUpdateModel
 
 class TestModel(unittest.TestCase):
@@ -180,9 +179,6 @@ def test_model_over_write(self):
         """
         Test to ensure overwriting of primary keys in model inheritance is allowed
 
-        This is currently only an issue in PyPy. When PYTHON-504 is introduced this should
-        be updated error out and warn the user
-
         @since 3.6.0
         @jira_ticket PYTHON-576
         @expected_result primary keys can be overwritten via inheritance