python: more robust

Author: scivision

+stdlib/+python/is_mount.m

@@ -3,21 +3,20 @@
 % https://docs.python.org/3/library/os.path.html#os.path.ismount
 
 function y = is_mount(filepath)
-arguments
-  filepath (1,1) string
-end
 
 y = logical.empty;
-if ~stdlib.exists(filepath), return, end
+
+p = py.pathlib.Path(filepath);
+if ~p.exists(), return, end
 
 % some Python on CI needs this. Didn't replicate on local Windows PC.
-if ispc() && strcmp(filepath, stdlib.root_name(filepath)) && ~endsWith(filepath, "/" | filesep)
+if ispc() && strcmp(filepath, string(p.drive)) && ~endsWith(filepath, "/" | filesep)
   y = false;
   return
 end
 
 try %#ok<TRYNC>
-  y = py.os.path.ismount(filepath);
+  y = py.os.path.ismount(p);
 end
 
 end

+stdlib/+python/read_symlink.m

@@ -1,15 +1,13 @@
 function r = read_symlink(file)
-arguments
-  file (1,1) string
-end
 
 r = "";
 
-if ~stdlib.is_symlink(file), return, end
+p = py.pathlib.Path(file);
+if ~p.is_symlink(), return, end
 
 % https://docs.python.org/3/library/pathlib.html#pathlib.Path.readlink
 try
-  r = string(py.os.readlink(file));
+  r = string(py.str(p.readlink()));
   if ispc() && startsWith(r, '\\?\')
     r = extractAfter(r, '\\?\');
   end