python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/macpath.py

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+"""Pathname and path-related operations for the Macintosh."""
+
+# strings representing various path-related bits and pieces
+# These are primarily for export; internally, they are hardcoded.
+# Should be set before imports for resolving cyclic dependency.
+curdir = ':'
+pardir = '::'
+extsep = '.'
+sep = ':'
+pathsep = '\n'
+defpath = ':'
+altsep = None
+devnull = 'Dev:Null'
+
+import os
+from stat import *
+import genericpath
+from genericpath import *
+
+__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
+           "basename","dirname","commonprefix","getsize","getmtime",
+           "getatime","getctime", "islink","exists","lexists","isdir","isfile",
+           "expanduser","expandvars","normpath","abspath",
+           "curdir","pardir","sep","pathsep","defpath","altsep","extsep",
+           "devnull","realpath","supports_unicode_filenames"]
+
+def _get_colon(path):
+    if isinstance(path, bytes):
+        return b':'
+    else:
+        return ':'
+
+# Normalize the case of a pathname.  Dummy in Posix, but <s>.lower() here.
+
+def normcase(path):
+    if not isinstance(path, (bytes, str)):
+        raise TypeError("normcase() argument must be str or bytes, "
+                        "not '{}'".format(path.__class__.__name__))
+    return path.lower()
+
+
+def isabs(s):
+    """Return true if a path is absolute.
+    On the Mac, relative paths begin with a colon,
+    but as a special case, paths with no colons at all are also relative.
+    Anything else is absolute (the string up to the first colon is the
+    volume name)."""
+
+    colon = _get_colon(s)
+    return colon in s and s[:1] != colon
+
+
+def join(s, *p):
+    try:
+        colon = _get_colon(s)
+        path = s
+        if not p:
+            path[:0] + colon  #23780: Ensure compatible data type even if p is null.
+        for t in p:
+            if (not path) or isabs(t):
+                path = t
+                continue
+            if t[:1] == colon:
+                t = t[1:]
+            if colon not in path:
+                path = colon + path
+            if path[-1:] != colon:
+                path = path + colon
+            path = path + t
+        return path
+    except (TypeError, AttributeError, BytesWarning):
+        genericpath._check_arg_types('join', s, *p)
+        raise
+
+
+def split(s):
+    """Split a pathname into two parts: the directory leading up to the final
+    bit, and the basename (the filename, without colons, in that directory).
+    The result (s, t) is such that join(s, t) yields the original argument."""
+
+    colon = _get_colon(s)
+    if colon not in s: return s[:0], s
+    col = 0
+    for i in range(len(s)):
+        if s[i:i+1] == colon: col = i + 1
+    path, file = s[:col-1], s[col:]
+    if path and not colon in path:
+        path = path + colon
+    return path, file
+
+
+def splitext(p):
+    if isinstance(p, bytes):
+        return genericpath._splitext(p, b':', altsep, b'.')
+    else:
+        return genericpath._splitext(p, sep, altsep, extsep)
+splitext.__doc__ = genericpath._splitext.__doc__
+
+def splitdrive(p):
+    """Split a pathname into a drive specification and the rest of the
+    path.  Useful on DOS/Windows/NT; on the Mac, the drive is always
+    empty (don't use the volume name -- it doesn't have the same
+    syntactic and semantic oddities as DOS drive letters, such as there
+    being a separate current directory per drive)."""
+
+    return p[:0], p
+
+
+# Short interfaces to split()
+
+def dirname(s): return split(s)[0]
+def basename(s): return split(s)[1]
+
+def ismount(s):
+    if not isabs(s):
+        return False
+    components = split(s)
+    return len(components) == 2 and not components[1]
+
+def islink(s):
+    """Return true if the pathname refers to a symbolic link."""
+
+    try:
+        import Carbon.File
+        return Carbon.File.ResolveAliasFile(s, 0)[2]
+    except:
+        return False
+
+# Is `stat`/`lstat` a meaningful difference on the Mac?  This is safe in any
+# case.
+
+def lexists(path):
+    """Test whether a path exists.  Returns True for broken symbolic links"""
+
+    try:
+        st = os.lstat(path)
+    except OSError:
+        return False
+    return True
+
+def expandvars(path):
+    """Dummy to retain interface-compatibility with other operating systems."""
+    return path
+
+
+def expanduser(path):
+    """Dummy to retain interface-compatibility with other operating systems."""
+    return path
+
+class norm_error(Exception):
+    """Path cannot be normalized"""
+
+def normpath(s):
+    """Normalize a pathname.  Will return the same result for
+    equivalent paths."""
+
+    colon = _get_colon(s)
+
+    if colon not in s:
+        return colon + s
+
+    comps = s.split(colon)
+    i = 1
+    while i < len(comps)-1:
+        if not comps[i] and comps[i-1]:
+            if i > 1:
+                del comps[i-1:i+1]
+                i = i - 1
+            else:
+                # best way to handle this is to raise an exception
+                raise norm_error('Cannot use :: immediately after volume name')
+        else:
+            i = i + 1
+
+    s = colon.join(comps)
+
+    # remove trailing ":" except for ":" and "Volume:"
+    if s[-1:] == colon and len(comps) > 2 and s != colon*len(s):
+        s = s[:-1]
+    return s
+
+def abspath(path):
+    """Return an absolute path."""
+    if not isabs(path):
+        if isinstance(path, bytes):
+            cwd = os.getcwdb()
+        else:
+            cwd = os.getcwd()
+        path = join(cwd, path)
+    return normpath(path)
+
+# realpath is a no-op on systems without islink support
+def realpath(path):
+    path = abspath(path)
+    try:
+        import Carbon.File
+    except ImportError:
+        return path
+    if not path:
+        return path
+    colon = _get_colon(path)
+    components = path.split(colon)
+    path = components[0] + colon
+    for c in components[1:]:
+        path = join(path, c)
+        try:
+            path = Carbon.File.FSResolveAliasFile(path, 1)[0].as_pathname()
+        except Carbon.File.Error:
+            pass
+    return path
+
+supports_unicode_filenames = True