diff --git a/‎cibuildwheel/logger.py‎
Lines changed: 2 additions & 2 deletions b/‎cibuildwheel/logger.py‎
Lines changed: 2 additions & 2 deletions
diff --git a/‎cibuildwheel/platforms/windows.py‎
Lines changed: 1 addition & 1 deletion b/‎cibuildwheel/platforms/windows.py‎
Lines changed: 1 addition & 1 deletion
diff --git a/‎cibuildwheel/util/file.py‎
Lines changed: 4 additions & 1 deletion b/‎cibuildwheel/util/file.py‎
Lines changed: 4 additions & 1 deletion
diff --git a/‎cibuildwheel/util/python_build_standalone.py‎
Lines changed: 3 additions & 4 deletions b/‎cibuildwheel/util/python_build_standalone.py‎
Lines changed: 3 additions & 4 deletions
@@ -375,11 +375,11 @@ def _github_step_summary(self, duration: float, options: Options) -> str:
         out.write("\n")
         return out.getvalue()
 
-    @property
+    @functools.cached_property
     def colors(self) -> Colors:
         return Colors(enabled=self.colors_enabled)
 
-    @property
+    @functools.cached_property
     def symbols(self) -> Symbols:
         return Symbols(unicode=self.unicode_enabled)
 
 
@@ -348,7 +348,7 @@ def setup_python(
         assert (venv_path / "Scripts" / "pip.exe").exists()
         where_pip = call("where", "pip", env=env, capture_stdout=True).splitlines()[0].strip()
         print(where_pip)
-        if where_pip.strip() != str(venv_path / "Scripts" / "pip.exe"):
+        if where_pip != str(venv_path / "Scripts" / "pip.exe"):
             msg = "pip available on PATH doesn't match our installed instance. If you have modified PATH, ensure that you don't overwrite cibuildwheel's entry or insert pip above it."
             raise errors.FatalError(msg)
         call("pip", "--version", env=env)
 
@@ -99,7 +99,8 @@ def download(url: str, dest: Path, *, sha256: str | None = None) -> None:
             time.sleep(3)
 
     if sha256:
-        computed = hashlib.sha256(dest.read_bytes()).hexdigest()
+        with dest.open("rb") as f:
+            computed = hashlib.file_digest(f, "sha256").hexdigest()
         if computed != sha256:
             dest.unlink(missing_ok=True)
             msg = f"SHA256 mismatch for {url}: expected {sha256!r}, got {computed!r}"
@@ -130,6 +131,8 @@ def extract_tar(tar_src: Path, dest: Path) -> None:
     See: https://docs.python.org/3/library/tarfile.html#tarfile.tar_filter for filter details
     """
     with tarfile.open(tar_src) as tar_:
+        # getattr shim needed while Python 3.11.0-3.11.3 are supported;
+        # once the minimum is 3.11.4+/3.12, replace with: tar_.extractall(dest, filter="tar")
         tar_.extraction_filter = getattr(tarfile, "tar_filter", (lambda member, _: member))
         tar_.extractall(dest)
 
 
@@ -154,7 +154,8 @@ def _download_or_get_from_cache(
         asset_cache_path = cache_dir / asset_filename
         if asset_cache_path.is_file():
             if sha256:
-                computed = hashlib.sha256(asset_cache_path.read_bytes()).hexdigest()
+                with asset_cache_path.open("rb") as f:
+                    computed = hashlib.file_digest(f, "sha256").hexdigest()
                 if computed != sha256:
                     print(
                         f"Cached python_build_standalone SHA256 mismatch for {asset_cache_path}; redownloading."
@@ -229,9 +230,7 @@ def create_python_build_standalone_environment(
     )
 
     python_base_dir = temp_dir / "pbs"
-    if python_base_dir.exists():
-        msg = f"python-build-standalone directory already exists: {python_base_dir}"
-        raise PythonBuildStandaloneError(msg)
+    assert not python_base_dir.exists()
     extract_tar(archive_path, python_base_dir)
 
     return _find_python_executable(python_base_dir)