Update to pyupgrades to 3.9 but skip typing changes as incorrectly putting Optional[str], etc. to str | None for python3.9

* afaics there is not an inline skip message

Author: ArBridgeman

exasol/toolbox/nox/_format.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import Iterable
+from collections.abc import Iterable
 
 import nox
 from nox import Session
@@ -26,7 +26,8 @@ def _pyupgrade(session: Session, files: Iterable[str]) -> None:
         "poetry",
         "run",
         "pyupgrade",
-        "--py38-plus",
+        "--py39-plus",
+        "--keep-runtime-typing",
         "--exit-zero-even-if-changed",
         *files,
     )

exasol/toolbox/nox/_lint.py

@@ -2,12 +2,8 @@
 
 import argparse
 import sys
+from collections.abc import Iterable
 from pathlib import Path
-from typing import (
-    Dict,
-    Iterable,
-    List,
-)
 
 import nox
 import rich.console

exasol/toolbox/util/dependencies/poetry_dependencies.py

@@ -17,16 +17,19 @@
 
 class PoetryGroup(BaseModel):
     name: str
-    toml_section: str
+    toml_section: Optional[str]
 
     class Config:
         frozen = True
 
 
+TRANSITIVE_GROUP = PoetryGroup(name="transitive", toml_section=None)
+
+
 class PoetryDependency(Package):
     name: str
     version: str
-    group: PoetryGroup | None
+    group: PoetryGroup
 
 
 class PoetryToml(BaseModel):
@@ -83,13 +86,13 @@ class PoetryDependencies(BaseModel):
     working_directory: Path
 
     @staticmethod
-    def _extract_from_line(line: str, group: PoetryGroup | None) -> PoetryDependency:
+    def _extract_from_line(line: str, group: PoetryGroup) -> PoetryDependency:
         pattern = r"\s+(\d+(?:\.\d+)*)\s+"
         match = re.split(pattern, line)
         return PoetryDependency(name=match[0], version=match[1], group=group)
 
     def _extract_from_poetry_show(
-        self, output_text: str, group: PoetryGroup | None
+        self, output_text: str, group: PoetryGroup
     ) -> list[PoetryDependency]:
         return [
             self._extract_from_line(line, group=group)
@@ -125,8 +128,8 @@ def all_dependencies(self) -> dict[str, list[PoetryDependency]]:
             for dep in group_list
         }
         for line in output.stdout.splitlines():
-            dep = self._extract_from_line(line=line, group=None)
+            dep = self._extract_from_line(line=line, group=TRANSITIVE_GROUP)
             if dep.name not in names_direct_dependencies:
                 transitive_dependencies.append(dep)
 
-        return direct_dependencies | {"transitive": transitive_dependencies}
+        return direct_dependencies | {TRANSITIVE_GROUP.name: transitive_dependencies}