style(benchmark): pyupgrade --py38-plus

lab/benchmark/benchmark.py

@@ -1,5 +1,7 @@
 """Run performance comparisons for versions of coverage"""
 
+from __future__ import annotations
+
 import collections
 import contextlib
 import itertools
@@ -10,10 +12,11 @@
 import subprocess
 import sys
 import time
+
 from pathlib import Path
 
 from dataclasses import dataclass
-from typing import Any, Dict, Iterable, Iterator, List, Optional, Tuple
+from typing import Any, Iterable, Iterator, Tuple
 
 import tabulate
 
@@ -137,8 +140,8 @@ class ProjectToTest:
  """Information about a project to use as a test case."""
 
  # Where can we clone the project from?
- git_url: Optional[str] = None
- slug: Optional[str] = None
+ git_url: str | None = None
+ slug: str | None = None
 
  def __init__(self):
  if not self.slug:
@@ -166,7 +169,7 @@ def prep_environment(self, env):
 
  @contextlib.contextmanager
  def tweak_coverage_settings(
- self, settings: Iterable[Tuple[str, Any]]
+ self, settings: Iterable[tuple[str, Any]]
  ) -> Iterator[None]:
  """Tweak the coverage settings.
 
@@ -285,7 +288,7 @@ class ProjectAttrs(ToxProject):
  git_url = "https://github.com/python-attrs/attrs"
 
  def tweak_coverage_settings(
- self, tweaks: Iterable[Tuple[str, Any]]
+ self, tweaks: Iterable[tuple[str, Any]]
  ) -> Iterator[None]:
  return tweak_toml_coverage_settings("pyproject.toml", tweaks)
 
@@ -378,7 +381,7 @@ def run_with_coverage(self, env, pip_args, cov_tweaks):
 
 
 def tweak_toml_coverage_settings(
- toml_file: str, tweaks: Iterable[Tuple[str, Any]]
+ toml_file: str, tweaks: Iterable[tuple[str, Any]]
 ) -> Iterator[None]:
  if tweaks:
  toml_inserts = []
@@ -487,11 +490,11 @@ class Coverage:
  # Short word for messages, directories, etc
  slug: str
  # Arguments for "pip install ..."
- pip_args: Optional[str] = None
+ pip_args: str | None = None
  # Tweaks to the .coveragerc file
- tweaks: Optional[Iterable[Tuple[str, Any]]] = None
+ tweaks: Iterable[tuple[str, Any]] | None = None
  # Environment variables to set
- env_vars: Optional[Dict[str, str]] = None
+ env_vars: dict[str, str] | None = None
 
 
 class NoCoverage(Coverage):
@@ -556,14 +559,14 @@ class Experiment:
 
  def __init__(
  self,
- py_versions: List[PyVersion],
- cov_versions: List[Coverage],
- projects: List[ProjectToTest],
+ py_versions: list[PyVersion],
+ cov_versions: list[Coverage],
+ projects: list[ProjectToTest],
  ):
  self.py_versions = py_versions
  self.cov_versions = cov_versions
  self.projects = projects
- self.result_data: Dict[ResultKey, List[float]] = {}
+ self.result_data: dict[ResultKey, list[float]] = {}
 
  def run(self, num_runs: int = 3) -> None:
  total_runs = (
@@ -601,7 +604,7 @@ def run(self, num_runs: int = 3) -> None:
  all_runs *= num_runs
  random.shuffle(all_runs)
 
- run_data: Dict[ResultKey, List[float]] = collections.defaultdict(list)
+ run_data: dict[ResultKey, list[float]] = collections.defaultdict(list)
 
  for proj, pyver, cov_ver, env in all_runs:
  with env.shell:
@@ -649,9 +652,9 @@ def run(self, num_runs: int = 3) -> None:
 
  def show_results(
  self,
- rows: List[str],
+ rows: list[str],
  column: str,
- ratios: Iterable[Tuple[str, str, str]] = (),
+ ratios: Iterable[tuple[str, str, str]] = (),
  ) -> None:
  dimensions = {
  "cov": [cov_ver.slug for cov_ver in self.cov_versions],
@@ -694,12 +697,12 @@ def show_results(
 
 
 def run_experiment(
- py_versions: List[PyVersion],
- cov_versions: List[Coverage],
- projects: List[ProjectToTest],
- rows: List[str],
+ py_versions: list[PyVersion],
+ cov_versions: list[Coverage],
+ projects: list[ProjectToTest],
+ rows: list[str],
  column: str,
- ratios: Iterable[Tuple[str, str, str]] = (),
+ ratios: Iterable[tuple[str, str, str]] = (),
 ):
  slugs = [v.slug for v in py_versions + cov_versions + projects]
  if len(set(slugs)) != len(slugs):