From e16379d2fc13bb2ca4485f470551845f3992d3f9 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Thu, 8 Dec 2022 17:43:30 +0100
Subject: [PATCH] [pre-commit.ci] pre-commit autoupdate (#29)
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* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/pre-commit-hooks: v4.3.0 → v4.4.0](https://github.com/pre-commit/pre-commit-hooks/compare/v4.3.0...v4.4.0)
- [github.com/PyCQA/flake8: 5.0.4 → 6.0.0](https://github.com/PyCQA/flake8/compare/5.0.4...6.0.0)
- [github.com/pre-commit/mirrors-mypy: v0.982 → v0.991](https://github.com/pre-commit/mirrors-mypy/compare/v0.982...v0.991)

* fix

* fix

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Hans Dembinski <hans.dembinski@gmail.com>
Co-authored-by: Hans Dembinski <HDembinski@users.noreply.github.com>
---
 .pre-commit-config.yaml | 6 +++---
 pyproject.toml          | 1 +
 src/jacobi/_typing.py   | 6 ++++--
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index c1c023a..c2749c2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,7 +15,7 @@
 repos:
 # Standard hooks
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v4.3.0
+  rev: v4.4.0
   hooks:
   - id: check-case-conflict
   - id: check-docstring-first
@@ -32,7 +32,7 @@ repos:
 
 # Python linter (Flake8)
 - repo: https://github.com/PyCQA/flake8
-  rev: 5.0.4
+  rev: 6.0.0
   hooks:
   - id: flake8
 
@@ -44,7 +44,7 @@ repos:
 
 # Python type checking
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: 'v0.982'
+  rev: 'v0.991'
   hooks:
   - id: mypy
     args: [src]
diff --git a/pyproject.toml b/pyproject.toml
index c12514f..bf92d45 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,3 +11,4 @@ write_to = "src/jacobi/_version.py"
 [tool.mypy]
 ignore_missing_imports = true
 allow_redefinition = true
+no_implicit_optional = false
diff --git a/src/jacobi/_typing.py b/src/jacobi/_typing.py
index 2d3c54b..4beba56 100644
--- a/src/jacobi/_typing.py
+++ b/src/jacobi/_typing.py
@@ -1,11 +1,13 @@
-from typing import Iterable, Sized, Generic, TypeVar
+from typing import Sized, Generic, TypeVar
+import abc
 
 T = TypeVar("T")
 
 
-class Indexable(Iterable, Sized, Generic[T]):
+class Indexable(Sized, Generic[T]):
     """Indexable type for mypy."""
 
+    @abc.abstractmethod
     def __getitem__(self, idx: int) -> T:
         """Get item at index idx."""
         ...  # pragma: no cover