Apply preview ruff rules

pyproject.toml

@@ -165,6 +165,8 @@ ignore = [
     "B020",
     "B904", # Ruff enables opinionated warnings by default
     "B905", # Ruff enables opinionated warnings by default
+    "E226",
+    "F841",
 ]
 select = [
     "ASYNC",

src/pip/_internal/commands/search.py

@@ -140,10 +140,8 @@ def print_results(
     if name_column_width is None:
         name_column_width = (
             max(
-                [
-                    len(hit["name"]) + len(highest_version(hit.get("versions", ["-"])))
-                    for hit in hits
-                ]
+                len(hit["name"]) + len(highest_version(hit.get("versions", ["-"])))
+                for hit in hits
             )
             + 4
         )

src/pip/_internal/locations/_sysconfig.py

@@ -161,9 +161,9 @@ def get_scheme(
         scheme_name = "posix_prefix"
 
     if home is not None:
-        variables = {k: home for k in _HOME_KEYS}
+        variables = dict.fromkeys(_HOME_KEYS, home)
     elif prefix is not None:
-        variables = {k: prefix for k in _HOME_KEYS}
+        variables = dict.fromkeys(_HOME_KEYS, prefix)
     else:
         variables = {}
 

tests/unit/test_vcs.py

@@ -604,7 +604,7 @@ def test_get_git_version() -> None:
         ("git version 2.17", (2, 17)),
         ("git version 2.18.1", (2, 18)),
         ("git version 2.35.GIT", (2, 35)),  # gh:12280
-        ("oh my git version 2.37.GIT", ()),  #  invalid version
+        ("oh my git version 2.37.GIT", ()),  # invalid version
         ("git version 2.GIT", ()),  # invalid version
     ],
 )