Actually the failures aren't OSX-specific:

======================================================================
FAIL: test_directory (__main__.CmdLineTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "Lib/test/test_cmd_line_script.py", line 117, in test_directory
    self._check_script(script_dir, script_name, script_dir)
  File "Lib/test/test_cmd_line_script.py", line 96, in _check_script
    self.assertEqual(exit_code, 0, data)
AssertionError: /usr/local/google/home/guido/python/py3k/python:
'/tmp/tmpLGqOxc' is a directory, cannot continue


======================================================================
FAIL: test_directory_compiled (__main__.CmdLineTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "Lib/test/test_cmd_line_script.py", line 124, in
test_directory_compiled
    self._check_script(script_dir, compiled_name, script_dir)
  File "Lib/test/test_cmd_line_script.py", line 96, in _check_script
    self.assertEqual(exit_code, 0, data)
AssertionError: /usr/local/google/home/guido/python/py3k/python:
'/tmp/tmprNwPih' is a directory, cannot continue


======================================================================
FAIL: test_zipfile (__main__.CmdLineTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "Lib/test/test_cmd_line_script.py", line 130, in test_zipfile
    self._check_script(zip_name, None, zip_name)
  File "Lib/test/test_cmd_line_script.py", line 96, in _check_script
    self.assertEqual(exit_code, 0, data)
AssertionError:   File "/tmp/tmpInCAJO/test_zip.zip", line 1
    PK# statements being executed
      ^
SyntaxError: invalid syntax
[25429 refs]


======================================================================
FAIL: test_zipfile_compiled (__main__.CmdLineTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "Lib/test/test_cmd_line_script.py", line 137, in
test_zipfile_compiled
    self._check_script(zip_name, None, zip_name)
  File "Lib/test/test_cmd_line_script.py", line 96, in _check_script
    self.assertEqual(exit_code, 0, data)
AssertionError:   File "/tmp/tmpqh6g1C/test_zip.zip", line 1
SyntaxError: Non-UTF-8 code starting with '\xc8' in file
/tmp/tmpqh6g1C/test_zip.zip on line 2, but no encoding declared; see
http://python.org/dev/peps/pep-0263/ for details
[25428 refs]