man/90-rearrange-path: apply "ruff format" and "ruff check --fix"

man/90-rearrange-path.py

@@ -17,6 +17,7 @@ interesting generators.
 import os
 import pathlib
 
+
 def rearrange_bin_sbin(path):
     """Make sure any pair of …/bin, …/sbin directories is in this order
 
@@ -33,9 +34,10 @@ def rearrange_bin_sbin(path):
                 items[i], items[j] = items[j], items[i]
     return ':'.join(p.as_posix() for p in items)
 
+
 if __name__ == '__main__':
-    path = os.environ['PATH'] # This should be always set.
-                              # If it is not, we will just crash, which is OK too.
+    # This should be always set. If it is not, we will just crash, which is OK too.
+    path = os.environ['PATH']
     new = rearrange_bin_sbin(path)
     if new != path:
-        print('PATH={}'.format(new))
+        print(f'PATH={new}')