python: add 3.12.py (PEP 695 generics, PEP 701 f-strings, itertools.batched, typing.override, sys.monitoring); update README and Makefile

Author: makelinux

python/3.12.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3.12
+
+# https://docs.python.org/3.12/whatsnew/3.12.html
+
+from passed import passed
+
+import sys
+from itertools import batched
+from typing import override
+
+
+# PEP 695: Type parameter syntax for generics
+def identity[T](value: T) -> T:
+    return value
+
+
+class Box[T]:
+    def __init__(self, value: T):
+        self.value = value
+
+
+assert identity(10) == 10
+assert Box[int](1).value == 1
+
+
+# PEP 701: f-strings improvements (kept simple for parser compatibility here)
+fstring_demo = f"sum = {(1 + 2)}"
+assert fstring_demo == "sum = 3"
+
+
+# itertools.batched added to the standard library
+assert list(batched([1, 2, 3, 4, 5], 2)) == [(1, 2), (3, 4), (5,)]
+
+
+# PEP 698: typing.override decorator
+class Base:
+    def method(self) -> str:
+        return "base"
+
+
+class Child(Base):
+    @override
+    def method(self) -> str:
+        return "child"
+
+
+assert Child().method() == "child"
+
+
+# PEP 669: sys.monitoring (presence check)
+assert hasattr(sys, "monitoring")
+
+
+passed()
+
+

python/Makefile

@@ -17,3 +17,4 @@ all:
 	./3.9.py
 	./3.10.py
 	./3.11.py
+	./3.12.py

python/README.md

@@ -1,7 +1,7 @@
 # Python features examples by releases
 
 ## [2.0 - 2.3](2.3.py), [2.4](2.4.py), [2.5](2.5.py), [2.6](2.6.py), [2.7](2.7.py)
-## [3.0](3.0.py), [3.1](3.1.py), [3.2](3.2.py), [3.3](3.3.py), [3.4](3.4.py), [3.5](3.5.py), [3.6](3.6.py), [3.7](3.7.py), [3.8](3.8.py), [3.9](3.9.py), [3.10](3.10.py), [3.11](3.11.py)
+## [3.0](3.0.py), [3.1](3.1.py), [3.2](3.2.py), [3.3](3.3.py), [3.4](3.4.py), [3.5](3.5.py), [3.6](3.6.py), [3.7](3.7.py), [3.8](3.8.py), [3.9](3.9.py), [3.10](3.10.py), [3.11](3.11.py), [3.12](3.12.py)
 
 ## Features
 * Minimal and practical self descriptive as possible source code.