Drop support for Python 2.7 up to 3.6.

CHANGES.rst

@@ -9,6 +9,11 @@
 
 - Fix test deprecation warning on Python 3.11.
 
+- Drop:
+
+    + `zope.interface.implements`
+    + `zope.interface.implementsOnly`
+    + `zope.interface.classProvides`
 
 5.5.2 (2022-11-17)
 ==================

docs/api/declarations.rst

@@ -515,33 +515,6 @@ When registering an adapter or utility component, the registry looks for the
 provided.
 
 
-Deprecated Functions
---------------------
-
-implements
-~~~~~~~~~~
-
-.. caution:: Does not work on Python 3.  Use the `implementer` decorator instead.
-
-.. autofunction:: implements
-
-
-implementsOnly
-~~~~~~~~~~~~~~
-
-.. caution:: Does not work on Python 3.  Use the `implementer_only` decorator instead.
-
-.. autofunction:: implementsOnly
-
-
-classProvides
-~~~~~~~~~~~~~
-
-.. caution:: Does not work on Python 3.  Use the `provider` decorator instead.
-
-.. autofunction:: classProvides
-
-
 Querying The Interfaces Of Objects
 ==================================
 

setup.py

@@ -113,11 +113,7 @@ def read(*rnames):
           "License :: OSI Approved :: Zope Public License",
           "Operating System :: OS Independent",
           "Programming Language :: Python",
-          "Programming Language :: Python :: 2",
-          "Programming Language :: Python :: 2.7",
           "Programming Language :: Python :: 3",
-          "Programming Language :: Python :: 3.5",
-          "Programming Language :: Python :: 3.6",
           "Programming Language :: Python :: 3.7",
           "Programming Language :: Python :: 3.8",
           "Programming Language :: Python :: 3.9",
@@ -139,13 +135,8 @@ def read(*rnames):
       zip_safe=False,
       tests_require=tests_require,
       install_requires=['setuptools'],
-      python_requires=', '.join([
-          '>=2.7',
-          '!=3.0.*',
-          '!=3.1.*',
-          '!=3.2.*',
-          '!=3.3.*',
-          '!=3.4.*',
+      python_requires=','.join([
+          '>=3.7',
       ]),
       extras_require={
           'docs': ['Sphinx', 'repoze.sphinx.autointerface'],

src/zope/interface/__init__.py

@@ -62,14 +62,11 @@ def meth(arg1, arg2):
 from zope.interface.declarations import classImplements
 from zope.interface.declarations import classImplementsFirst
 from zope.interface.declarations import classImplementsOnly
-from zope.interface.declarations import classProvides
 from zope.interface.declarations import directlyProvidedBy
 from zope.interface.declarations import directlyProvides
 from zope.interface.declarations import implementedBy
 from zope.interface.declarations import implementer
 from zope.interface.declarations import implementer_only
-from zope.interface.declarations import implements
-from zope.interface.declarations import implementsOnly
 from zope.interface.declarations import moduleProvides
 from zope.interface.declarations import named
 from zope.interface.declarations import noLongerProvides

src/zope/interface/_compat.py

@@ -20,51 +20,16 @@
 """
 import os
 import sys
-import types
 
-if sys.version_info[0] < 3:
 
-    def _normalize_name(name):
-        if isinstance(name, basestring):
-            return unicode(name)
-        raise TypeError("name must be a regular or unicode string")
-
-    CLASS_TYPES = (type, types.ClassType)
-    STRING_TYPES = (basestring,)
-
-    _BUILTINS = '__builtin__'
-
-    PYTHON3 = False
-    PYTHON2 = True
-
-else:
-
-    def _normalize_name(name):
-        if isinstance(name, bytes):
-            name = str(name, 'ascii')
-        if isinstance(name, str):
-            return name
-        raise TypeError("name must be a string or ASCII-only bytes")
-
-    CLASS_TYPES = (type,)
-    STRING_TYPES = (str,)
-
-    _BUILTINS = 'builtins'
-
-    PYTHON3 = True
-    PYTHON2 = False
+def _normalize_name(name):
+    if isinstance(name, bytes):
+        name = str(name, 'ascii')
+    if isinstance(name, str):
+        return name
+    raise TypeError("name must be a string or ASCII-only bytes")
 
 PYPY = hasattr(sys, 'pypy_version_info')
-PYPY2 = PYTHON2 and PYPY
-
-def _skip_under_py3k(test_method):
-    import unittest
-    return unittest.skipIf(sys.version_info[0] >= 3, "Only on Python 2")(test_method)
-
-
-def _skip_under_py2(test_method):
-    import unittest
-    return unittest.skipIf(sys.version_info[0] < 3, "Only on Python 3")(test_method)
 
 
 def _c_optimizations_required():

src/zope/interface/_zope_interface_coptimizations.c

@@ -31,12 +31,7 @@
 #define Py_TYPE(o) ((o)->ob_type)
 #endif
 
-#if PY_MAJOR_VERSION >= 3
-#define PY3K
 #define PyNative_FromString PyUnicode_FromString
-#else
-#define PyNative_FromString PyString_FromString
-#endif
 
 static PyObject *str__dict__, *str__implemented__, *strextends;
 static PyObject *BuiltinImplementationSpecifications, *str__provides__;
@@ -763,10 +758,6 @@ __adapt__(PyObject *self, PyObject *obj)
   return Py_None;
 }
 
-#ifndef PY3K
-typedef long Py_hash_t;
-#endif
-
 typedef struct {
     Spec spec;
     PyObject* __name__;
@@ -1255,11 +1246,7 @@ _lookup(lookup *self,
 {
   PyObject *result, *key, *cache;
   result = key = cache = NULL;
-#ifdef PY3K
   if ( name && !PyUnicode_Check(name) )
-#else
-  if ( name && !PyString_Check(name) && !PyUnicode_Check(name) )
-#endif
   {
     PyErr_SetString(PyExc_ValueError,
                     "name is not a string or unicode");
@@ -1351,11 +1338,7 @@ _lookup1(lookup *self,
 {
   PyObject *result, *cache;
 
-#ifdef PY3K
   if ( name && !PyUnicode_Check(name) )
-#else
-  if ( name && !PyString_Check(name) && !PyUnicode_Check(name) )
-#endif
   {
     PyErr_SetString(PyExc_ValueError,
                     "name is not a string or unicode");
@@ -1427,11 +1410,7 @@ _adapter_hook(lookup *self,
 {
   PyObject *required, *factory, *result;
 
-#ifdef PY3K
   if ( name && !PyUnicode_Check(name) )
-#else
-  if ( name && !PyString_Check(name) && !PyUnicode_Check(name) )
-#endif
   {
     PyErr_SetString(PyExc_ValueError,
                     "name is not a string or unicode");