use scandir() in find_commands.py to avoid stat() calls (#13071)

conda/cli/find_commands.py

@@ -69,10 +69,8 @@ def find_commands(include_others=True):
     for dir_path in dir_paths:
         if not isdir(dir_path):
             continue
-        for fn in os.listdir(dir_path):
-            if not isfile(join(dir_path, fn)):
-                continue
-            m = pat.match(fn)
-            if m:
+        for entry in os.scandir(dir_path):
+            m = pat.match(entry.name)
+            if m and entry.is_file():
                 res.add(m.group(1))
     return tuple(sorted(res))

news/find-commands-scandir

@@ -0,0 +1,20 @@
+### Enhancements
+
+* Use `os.scandir()` to find conda subcommands without `stat()` overhead.
+  (#13067)
+
+### Bug fixes
+
+* <news item>
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>