Remove Python 3.9 and 3.10 support

.github/workflows/freeze-for-pr.yml

@@ -19,10 +19,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/lint.yml

@@ -24,10 +24,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/pr-docs.yml

@@ -28,11 +28,11 @@ jobs:
           repository: ${{ github.event.pull_request.head.repo.full_name }}
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         if: github.event.action != 'closed'
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         if: github.event.action != 'closed'

.github/workflows/publish.yml

@@ -22,10 +22,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: Build project
         run: |

.github/workflows/py-test.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13-dev"]
+        python-version: ["3.11", "3.12", "3.13"]
 
     runs-on: ${{ matrix.os }}
 
@@ -55,10 +55,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/reformat.yml

@@ -18,10 +18,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/release-docs.yml

@@ -13,10 +13,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: Install prerequisites
         run: |

.github/workflows/resync-piped.yml

@@ -19,10 +19,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/type-check.yml

@@ -24,10 +24,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/update-licence.yml

@@ -14,10 +14,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/upgrade-locks.yml

@@ -14,10 +14,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/verify-locks.yml

@@ -22,10 +22,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

.github/workflows/verify-types.yml

@@ -24,10 +24,10 @@ jobs:
         with:
           submodules: "true"
 
-      - name: Set up Python 3.9
+      - name: Set up Python 3.11
         uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b
         with:
-          python-version: "3.9"
+          python-version: "3.11"
 
       - name: install prerequisites
         run: |

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Moved away from using `typing.runtime_checkable` as this is unreliable in
   newer Python versions.
 
+### Removed
+- Support for Python 3.9 and 3.10.
+
 ## [2.17.6] - 2024-10-07
 ### Changed
 - Support Python 3.13.

CONTRIBUTING.md

@@ -33,12 +33,11 @@ and should also use styles which are specific to [pdoc](https://pdoc.dev/docs/pd
 A few examples of pdoc style would be:
 
 * Links: Unlike sphinx, regardless of whether you're linking to a module, class, function or variable the link will
-  always be in the style of `` `link.to.thing` `` with no type information included and relative links being supported
-  for types in the current module (e.g. `` `Class.attribute` ``.
+  always be in the style of `` [link.to.thing][] `` with no type information included.
 * Documenting fluent methods: The return type for fluent methods should be given as `Self` with the description for it
   following the lines of something like "the {x} instance to enable chained calls".
-* Documented types (such as for parameters and return types) which are unions should be documented using `|` style
-  and `T | None`/`T | hikari.UndefinedType` are preferred over `typing.Optional[T]`/`hikari.UndefinedOr[T]`
+* Union types should be annotated in code and documentation using `|` style and `T | None`/`T | hikari.UndefinedType`
+  are preferred over `T | None`/`hikari.UndefinedOr[T]`
 
 ### CHANGELOG.md
 
@@ -65,8 +64,8 @@ good references for how projects should be type-hinted to be `type-complete`.
 **NOTES**
 
 * This project deviates from the common convention of importing types from the typing module and instead
-  imports the typing module itself to use generics and types in it like `typing.Union` and `typing.Optional`.
-* Since this project supports python 3.9+, the `typing` types which were deprecated by
+  imports the typing module itself to use generics and types in it like `typing.Annotated`.
+* Since this project supports python 3.11+, the `typing` types which were deprecated by
   [PEP 585](https://www.python.org/dev/peps/pep-0585/) should be avoided in favour of their `collections.abc`,
   builtin, `re` and `contextlib` equivalents.
 * The standard approach for using `collections.abc` types within this project is to `import collections.abc as collections`.

README.md

@@ -4,7 +4,7 @@ A flexible command framework designed to extend Hikari.
 
 # Installation
 
-You can install Tanjun from PyPI using the following command in any Python 3.9 or above environment.
+You can install Tanjun from PyPI using the following command in any Python 3.11 or above environment.
 
 ```
 python -m pip install -U hikari-tanjun