gh-136437: Make several functions in os.path pos-only

Lib/ntpath.py

@@ -47,7 +47,7 @@ def _get_bothseps(path):
         LOCALE_NAME_INVARIANT as _LOCALE_NAME_INVARIANT,
         LCMAP_LOWERCASE as _LCMAP_LOWERCASE)
 
-    def normcase(s):
+    def normcase(s, /):
         """Normalize case of pathname.
 
         Makes all characters lowercase and all slashes into backslashes.
@@ -66,7 +66,7 @@ def normcase(s):
                                   _LCMAP_LOWERCASE,
                                   s.replace('/', '\\'))
 except ImportError:
-    def normcase(s):
+    def normcase(s, /):
         """Normalize case of pathname.
 
         Makes all characters lowercase and all slashes into backslashes.
@@ -77,7 +77,7 @@ def normcase(s):
         return s.replace('/', '\\').lower()
 
 
-def isabs(s):
+def isabs(s, /):
     """Test whether a path is absolute"""
     s = os.fspath(s)
     if isinstance(s, bytes):
@@ -143,7 +143,7 @@ def join(path, *paths):
 # Split a path in a drive specification (a drive letter followed by a
 # colon) and the path specification.
 # It is always true that drivespec + pathspec == p
-def splitdrive(p):
+def splitdrive(p, /):
     """Split a pathname into drive/UNC sharepoint and relative path specifiers.
     Returns a 2-tuple (drive_or_unc, path); either part may be empty.
 
@@ -169,7 +169,7 @@ def splitdrive(p):
 try:
     from nt import _path_splitroot_ex as splitroot
 except ImportError:
-    def splitroot(p):
+    def splitroot(p, /):
         """Split a pathname into drive, root and tail.
 
         The tail contains anything after the root."""
@@ -219,7 +219,7 @@ def splitroot(p):
 # join(head, tail) == p holds.
 # The resulting head won't end in '/' unless it is the root.
 
-def split(p):
+def split(p, /):
     """Split a pathname.
 
     Return tuple (head, tail) where tail is everything after the final slash.
@@ -240,7 +240,7 @@ def split(p):
 # pathname component; the root is everything before that.
 # It is always true that root + ext == p.
 
-def splitext(p):
+def splitext(p, /):
     p = os.fspath(p)
     if isinstance(p, bytes):
         return genericpath._splitext(p, b'\\', b'/', b'.')
@@ -251,14 +251,14 @@ def splitext(p):
 
 # Return the tail (basename) part of a path.
 
-def basename(p):
+def basename(p, /):
     """Returns the final component of a pathname"""
     return split(p)[1]
 
 
 # Return the head (dirname) part of a path.
 
-def dirname(p):
+def dirname(p, /):
     """Returns the directory component of a pathname"""
     return split(p)[0]
 

Lib/posixpath.py

@@ -50,15 +50,15 @@ def _get_sep(path):
 # normalizations (such as optimizing '../' away) are not allowed
 # (another function should be defined to do that).
 
-def normcase(s):
+def normcase(s, /):
     """Normalize case of pathname.  Has no effect under Posix"""
     return os.fspath(s)
 
 
 # Return whether a path is absolute.
 # Trivial in Posix, harder on the Mac or MS-DOS.
 
-def isabs(s):
+def isabs(s, /):
     """Test whether a path is absolute"""
     s = os.fspath(s)
     sep = _get_sep(s)
@@ -97,7 +97,7 @@ def join(a, *p):
 # '/' in the path, head  will be empty.
 # Trailing '/'es are stripped from head unless it is the root.
 
-def split(p):
+def split(p, /):
     """Split a pathname.  Returns tuple "(head, tail)" where "tail" is
     everything after the final slash.  Either part may be empty."""
     p = os.fspath(p)
@@ -114,7 +114,7 @@ def split(p):
 # pathname component; the root is everything before that.
 # It is always true that root + ext == p.
 
-def splitext(p):
+def splitext(p, /):
     p = os.fspath(p)
     if isinstance(p, bytes):
         sep = b'/'
@@ -128,7 +128,7 @@ def splitext(p):
 # Split a pathname into a drive specification and the rest of the
 # path.  Useful on DOS/Windows/NT; on Unix, the drive is always empty.
 
-def splitdrive(p):
+def splitdrive(p, /):
     """Split a pathname into drive and path. On Posix, drive is always
     empty."""
     p = os.fspath(p)
@@ -138,7 +138,7 @@ def splitdrive(p):
 try:
     from posix import _path_splitroot_ex as splitroot
 except ImportError:
-    def splitroot(p):
+    def splitroot(p, /):
         """Split a pathname into drive, root and tail.
 
         The tail contains anything after the root."""
@@ -163,7 +163,7 @@ def splitroot(p):
 
 # Return the tail (basename) part of a path, same as split(path)[1].
 
-def basename(p):
+def basename(p, /):
     """Returns the final component of a pathname"""
     p = os.fspath(p)
     sep = _get_sep(p)
@@ -173,7 +173,7 @@ def basename(p):
 
 # Return the head (dirname) part of a path, same as split(path)[0].
 
-def dirname(p):
+def dirname(p, /):
     """Returns the directory component of a pathname"""
     p = os.fspath(p)
     sep = _get_sep(p)

Modules/posixmodule.c

@@ -5535,15 +5535,16 @@ os__path_lexists_impl(PyObject *module, path_t *path)
 /*[clinic input]
 os._path_isdir -> bool
 
-    s as path: path_t(allow_fd=True, suppress_value_error=True)
+    s as path: path_t(allow_fd=True, suppress_value_error=True),
+    /
 
 Return true if the pathname refers to an existing directory.
 
 [clinic start generated code]*/
 
 static int
 os__path_isdir_impl(PyObject *module, path_t *path)
-/*[clinic end generated code: output=d5786196f9e2fa7a input=132a3b5301aecf79]*/
+/*[clinic end generated code: output=d5786196f9e2fa7a input=6d3c18234e720b19]*/
 {
     return _testFileType(path, PY_IFDIR);
 }
@@ -5612,7 +5613,8 @@ os__path_isjunction_impl(PyObject *module, path_t *path)
 /*[clinic input]
 os._path_splitroot_ex
 
-    p as path: path_t(make_wide=True, nonstrict=True)
+    p as path: path_t(make_wide=True, nonstrict=True),
+    /
 
 Split a pathname into drive, root and tail.
 
@@ -5621,7 +5623,7 @@ The tail contains anything after the root.
 
 static PyObject *
 os__path_splitroot_ex_impl(PyObject *module, path_t *path)
-/*[clinic end generated code: output=4b0072b6cdf4b611 input=4556b615c7cc13f2]*/
+/*[clinic end generated code: output=4b0072b6cdf4b611 input=ccd3dfece9b2d79a]*/
 {
     Py_ssize_t drvsize, rootsize;
     PyObject *drv = NULL, *root = NULL, *tail = NULL, *result = NULL;