Avoid an unnecessary Path->str->Path.

Author: QuLogic

lib/matplotlib/testing/compare.py

@@ -34,10 +34,14 @@ def make_test_filename(fname, purpose):
     return '%s-%s%s' % (base, purpose, ext)
 
 
-def get_cache_dir():
+def _get_cache_path():
     cache_dir = Path(mpl.get_cachedir(), 'test_cache')
     cache_dir.mkdir(parents=True, exist_ok=True)
-    return str(cache_dir)
+    return cache_dir
+
+
+def get_cache_dir():
+    return str(_get_cache_path())
 
 
 def get_file_hash(path, block_size=2 ** 20):
@@ -286,7 +290,7 @@ def convert(filename, cache):
     # Only convert the file if the destination doesn't already exist or
     # is out of date.
     if not newpath.exists() or newpath.stat().st_mtime < path.stat().st_mtime:
-        cache_dir = Path(get_cache_dir()) if cache else None
+        cache_dir = _get_cache_path() if cache else None
 
         if cache_dir is not None:
             _register_conversion_cache_cleaner_once()
@@ -318,7 +322,7 @@ def _clean_conversion_cache():
     max_cache_size = 2 * baseline_images_size
     # Reduce cache until it fits.
     cache_stat = {
-        path: path.stat() for path in Path(get_cache_dir()).glob("*")}
+        path: path.stat() for path in _get_cache_path().glob("*")}
     cache_size = sum(stat.st_size for stat in cache_stat.values())
     paths_by_atime = sorted(  # Oldest at the end.
         cache_stat, key=lambda path: cache_stat[path].st_atime, reverse=True)