WIP: Python 3.12 posts

posts/concatenate.md

@@ -1,5 +1,6 @@
 ---
 author: orsinium
+id: 730
 published: 2023-08-10
 topics:
   - typing

posts/param-spec.md

@@ -1,5 +1,6 @@
 ---
 author: orsinium
+id: 729
 published: 2023-08-08
 topics:
   - typing

posts/type-params.md

@@ -0,0 +1,64 @@
+---
+author: orsinium
+published: 2023-08-17
+pep: 695
+python: "3.12"
+topics:
+  - typing
+---
+
+# Type parameter syntax
+
+[PEP 695](https://peps.python.org/pep-0695/) (will land in Python 3.12) introduced a new, more concise, way to declare type parameters.
+
+Before:
+
+```python
+from typing import Generic, Iterable, TypeVar
+
+T = TypeVar('T')
+
+def max(args: Iterable[T]) -> T:
+  ...
+
+class Queue(Generic[T]):
+  def push(self, item: T) -> None:
+    ...
+```
+
+After:
+
+```python
+from typing import Iterable
+
+def max[T](args: Iterable[T]) -> T:
+  ...
+
+class Queue[T]:
+  def push(self, item: T) -> None:
+    ...
+```
+
+And you can also add constraints to type variables.
+
+Before:
+
+```python
+from typing import Callable, TypeVar
+
+C = TypeVar('C', bound=Callable)
+
+def decorator(f: C) -> C:
+  ...
+```
+
+After:
+
+```python
+from typing import Callable
+
+def decorator[C: (Callable, )](f: C) -> C:
+  ...
+```
+
+The main benefit of the new syntax is that type constraints are now scoped to the class or function that uses them. The old `TypeVar` syntax made you declare a global variable at the top of the file that might be far from the class or function declaration that needs them and is often reused in multiple places.

posts/typed-dict.md

@@ -2,6 +2,8 @@
 published: 2021-03-25
 id: 656
 author: orsinium
+topics:
+  - typing
 traces:
   - [module: typing, type: TypedDict]
 pep: 589

posts/typing-self.md

@@ -2,6 +2,8 @@
 author: orsinium
 id: 711
 published: 2022-12-03
+topics:
+  - typing
 traces:
   - [module: typing, type: Self]
 pep: 673

posts/website-announcement.md

@@ -0,0 +1,14 @@
+---
+author: orsinium
+published: 2023-08-15
+---
+
+# Website announcement
+
+Great news everyone! We extracted all our recent posts as Markdown, organized them, and made them more accessible. Now we have:
+
+* 🌐 Website: [pythonetc.orsinium.dev](https://pythonetc.orsinium.dev/)
+* 📢 RSS: [pythonetc.orsinium.dev/index.xml](https://pythonetc.orsinium.dev/index.xml)
+* 🧑‍💻️ GitHub: [github.com/life4/pythonetc](https://github.com/life4/pythonetc)
+
+If you want to write a guest post, just send us a PR on GitHub. The README tells what you can write about and how. Thank you all for staying with us all these years ❤️

todo.md

@@ -60,4 +60,5 @@ These are ideas for future posts. Let me know if you want to write a guest post
 + asyncio.TaskGroup
 + contextvars
 + itertools.pairwise
++ typing.deprecated <https://peps.python.org/pep-0702/>
 + <https://peps.python.org/pep-0692/>