Drop support for Python versions older than 3.11

Also remove version-specific classifiers in `pyproject.toml` as we are
already specifying the supported Python versions in `requires-python`.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

.github/workflows/ci.yaml

@@ -20,9 +20,6 @@ jobs:
         os:
           - ubuntu-20.04
         python:
-          - "3.8"
-          - "3.9"
-          - "3.10"
           - "3.11"
     runs-on: ${{ matrix.os }}
 
@@ -60,7 +57,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.11"
+          python-version: '3.11'
 
       - name: Install build dependencies
         run: |

README.md

@@ -8,8 +8,7 @@ A development kit to interact with the Frequenz development platform.
 
 ## Supported Python versions
 
-* For x86_64 Python 3.8 - 3.11 are supported (tested).
-* For arm64 only Python 3.8 is supported (due to some dependencies that only support 3.8).
+* Only Python 3.11 is fully supported (tested).
 
 ## Contributing
 

RELEASE_NOTES.md

@@ -2,10 +2,12 @@
 
 ## Summary
 
-<!-- Here goes a general summary of what this release is about -->
+This release drops support for Python versions older than 3.11.
 
 ## Upgrading
 
+* Now Python 3.11 is the minimum supported version.  All users must upgrade to Python 3.11 (including virtual environments used for development).
+
 * Now `float` is used everywhere for representing power (before power metrics were `float` but setting power was done using `int`).
   * `frequenz.sdk.actor.power_distributing`: the `power` attribute of the `Request` class has been updated from `int` to a `float`.
   * `frequenz.sdk.microgrid`: the `set_power()` method of both the `MicrogridApiClient` and `MicrogridGrpcClient` classes now expect a `float` value for the `power_w` parameter instead of `int`.

pyproject.toml

@@ -18,12 +18,9 @@ classifiers = [
   "License :: OSI Approved :: MIT License",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
-  "Programming Language :: Python :: 3.9",
-  "Programming Language :: Python :: 3.10",
   "Topic :: Software Development :: Libraries",
 ]
-requires-python = ">= 3.8, < 4"
+requires-python = ">= 3.11, < 4"
 dependencies = [
   "frequenz-api-microgrid >= 0.11.0, < 0.12.0",
   "frequenz-channels >= 0.14.0, < 0.15.0",