#16135: Removal of OS/2 support (Python code partial cleanup)

Lib/_osx_support.py

@@ -38,7 +38,7 @@ def _find_executable(executable, path=None):
     paths = path.split(os.pathsep)
     base, ext = os.path.splitext(executable)
 
-    if (sys.platform == 'win32' or os.name == 'os2') and (ext != '.exe'):
+    if (sys.platform == 'win32') and (ext != '.exe'):
         executable = executable + '.exe'
 
     if not os.path.isfile(executable):

Lib/importlib/_bootstrap.py

@@ -1709,7 +1709,7 @@ def _setup(sys_module, _imp_module):
             builtin_module = sys.modules[builtin_name]
         setattr(self_module, builtin_name, builtin_module)
 
-    os_details = ('posix', ['/']), ('nt', ['\\', '/']), ('os2', ['\\', '/'])
+    os_details = ('posix', ['/']), ('nt', ['\\', '/'])
     for builtin_os, path_separators in os_details:
         # Assumption made in _path_join()
         assert all(len(sep) == 1 for sep in path_separators)
@@ -1720,9 +1720,6 @@ def _setup(sys_module, _imp_module):
         else:
             try:
                 os_module = BuiltinImporter.load_module(builtin_os)
-                # TODO: rip out os2 code after 3.3 is released as per PEP 11
-                if builtin_os == 'os2' and 'EMX GCC' in sys.version:
-                    path_sep = path_separators[1]
                 break
             except ImportError:
                 continue

Lib/mailbox.py

@@ -707,8 +707,7 @@ class _singlefileMailbox(Mailbox):
         try:
             os.rename(new_file.name, self._path)
         except OSError as e:
-            if e.errno == errno.EEXIST or \
+            if e.errno == errno.EEXIST:
-              (os.name == 'os2' and e.errno == errno.EACCES):
                 os.remove(self._path)
                 os.rename(new_file.name, self._path)
             else:
@@ -2093,8 +2092,7 @@ def _lock_file(f, dotlock=True):
                     os.rename(pre_lock.name, f.name + '.lock')
                     dotlock_done = True
             except OSError as e:
-                if e.errno == errno.EEXIST or \
+                if e.errno == errno.EEXIST:
-                  (os.name == 'os2' and e.errno == errno.EACCES):
                     os.remove(pre_lock.name)
                     raise ExternalClashError('dot lock unavailable: %s' %
                                              f.name)

Lib/os.py

@@ -1,9 +1,9 @@
 r"""OS routines for Mac, NT, or Posix depending on what system we're on.
 
 This exports:
-  - all functions from posix, nt, os2, or ce, e.g. unlink, stat, etc.
+  - all functions from posix, nt or ce, e.g. unlink, stat, etc.
   - os.path is either posixpath or ntpath
-  - os.name is either 'posix', 'nt', 'os2' or 'ce'.
+  - os.name is either 'posix', 'nt' or 'ce'.
   - os.curdir is a string representing the current directory ('.' or ':')
   - os.pardir is a string representing the parent directory ('..' or '::')
   - os.sep is the (or a most common) pathname separator ('/' or ':' or '\\')
@@ -81,30 +81,6 @@ elif 'nt' in _names:
     except ImportError:
         pass
 
-elif 'os2' in _names:
-    name = 'os2'
-    linesep = '\r\n'
-    from os2 import *
-    try:
-        from os2 import _exit
-        __all__.append('_exit')
-    except ImportError:
-        pass
-    if sys.version.find('EMX GCC') == -1:
-        import ntpath as path
-    else:
-        import os2emxpath as path
-        from _emx_link import link
-
-    import os2
-    __all__.extend(_get_exports_list(os2))
-    del os2
-
-    try:
-        from os2 import _have_functions
-    except ImportError:
-        pass
-
 elif 'ce' in _names:
     name = 'ce'
     linesep = '\r\n'
@@ -715,7 +691,7 @@ else:
     __all__.append("unsetenv")
 
 def _createenviron():
-    if name in ('os2', 'nt'):
+    if name == 'nt':
         # Where Env Var Names Must Be UPPERCASE
         def check_str(value):
             if not isinstance(value, str):
@@ -755,7 +731,7 @@ def getenv(key, default=None):
     key, default and the result are str."""
     return environ.get(key, default)
 
-supports_bytes_environ = name not in ('os2', 'nt')
+supports_bytes_environ = (name != 'nt')
 __all__.extend(("getenv", "supports_bytes_environ"))
 
 if supports_bytes_environ:

Lib/platform.py

@@ -122,7 +122,7 @@ try:
 except AttributeError:
     # os.devnull was added in Python 2.4, so emulate it for earlier
     # Python versions
-    if sys.platform in ('dos','win32','win16','os2'):
+    if sys.platform in ('dos','win32','win16'):
         # Use the old CP/M NUL as device name
         DEV_NULL = 'NUL'
     else:
@@ -896,7 +896,7 @@ def _syscmd_uname(option,default=''):
 
     """ Interface to the system's uname command.
     """
-    if sys.platform in ('dos','win32','win16','os2'):
+    if sys.platform in ('dos','win32','win16'):
         # XXX Others too ?
         return default
     try:
@@ -919,7 +919,7 @@ def _syscmd_file(target,default=''):
         default in case the command should fail.
 
     """
-    if sys.platform in ('dos','win32','win16','os2'):
+    if sys.platform in ('dos','win32','win16'):
         # XXX Others too ?
         return default
     target = _follow_symlinks(target)

Lib/pydoc.py

@@ -1393,7 +1393,7 @@ def getpager():
             return lambda text: pipepager(text, os.environ['PAGER'])
     if os.environ.get('TERM') in ('dumb', 'emacs'):
         return plainpager
-    if sys.platform == 'win32' or sys.platform.startswith('os2'):
+    if sys.platform == 'win32':
         return lambda text: tempfilepager(plain(text), 'more <')
     if hasattr(os, 'system') and os.system('(less) 2>/dev/null') == 0:
         return lambda text: pipepager(text, 'less')

Lib/site.py

@@ -300,7 +300,7 @@ def getsitepackages(prefixes=None):
             continue
         seen.add(prefix)
 
-        if sys.platform in ('os2emx', 'riscos'):
+        if sys.platform == 'riscos':
             sitepackages.append(os.path.join(prefix, "Lib", "site-packages"))
         elif os.sep == '/':
             sitepackages.append(os.path.join(prefix, "lib",
@@ -329,23 +329,6 @@ def addsitepackages(known_paths, prefixes=None):
 
     return known_paths
 
-def setBEGINLIBPATH():
-    """The OS/2 EMX port has optional extension modules that do double duty
-    as DLLs (and must use the .DLL file extension) for other extensions.
-    The library search path needs to be amended so these will be found
-    during module import.  Use BEGINLIBPATH so that these are at the start
-    of the library search path.
-
-    """
-    dllpath = os.path.join(sys.prefix, "Lib", "lib-dynload")
-    libpath = os.environ['BEGINLIBPATH'].split(';')
-    if libpath[-1]:
-        libpath.append(dllpath)
-    else:
-        libpath[-1] = dllpath
-    os.environ['BEGINLIBPATH'] = ';'.join(libpath)
-
-
 def setquit():
     """Define new builtins 'quit' and 'exit'.
 
@@ -595,8 +578,6 @@ def main():
         ENABLE_USER_SITE = check_enableusersite()
     known_paths = addusersitepackages(known_paths)
     known_paths = addsitepackages(known_paths)
-    if sys.platform == 'os2emx':
-        setBEGINLIBPATH()
     setquit()
     setcopyright()
     sethelper()

Lib/sysconfig.py

@@ -52,25 +52,6 @@ _INSTALL_SCHEMES = {
         'scripts': '{base}/Scripts',
         'data': '{base}',
         },
-    'os2': {
-        'stdlib': '{installed_base}/Lib',
-        'platstdlib': '{base}/Lib',
-        'purelib': '{base}/Lib/site-packages',
-        'platlib': '{base}/Lib/site-packages',
-        'include': '{installed_base}/Include',
-        'platinclude': '{installed_base}/Include',
-        'scripts': '{base}/Scripts',
-        'data': '{base}',
-        },
-    'os2_home': {
-        'stdlib': '{userbase}/lib/python{py_version_short}',
-        'platstdlib': '{userbase}/lib/python{py_version_short}',
-        'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
-        'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
-        'include': '{userbase}/include/python{py_version_short}',
-        'scripts': '{userbase}/bin',
-        'data': '{userbase}',
-        },
     'nt_user': {
         'stdlib': '{userbase}/Python{py_version_nodot}',
         'platstdlib': '{userbase}/Python{py_version_nodot}',
@@ -210,7 +191,7 @@ def _getuserbase():
     def joinuser(*args):
         return os.path.expanduser(os.path.join(*args))
 
-    # what about 'os2emx', 'riscos' ?
+    # what about 'riscos' ?
     if os.name == "nt":
         base = os.environ.get("APPDATA") or "~"
         if env_base:
@@ -524,7 +505,7 @@ def get_config_vars(*args):
             # sys.abiflags may not be defined on all platforms.
             _CONFIG_VARS['abiflags'] = ''
 
-        if os.name in ('nt', 'os2'):
+        if os.name == 'nt':
             _init_non_posix(_CONFIG_VARS)
         if os.name == 'posix':
             _init_posix(_CONFIG_VARS)

Lib/tarfile.py

@@ -2213,8 +2213,7 @@ class TarFile(object):
                 if tarinfo.issym() and hasattr(os, "lchown"):
                     os.lchown(targetpath, u, g)
                 else:
-                    if sys.platform != "os2emx":
+                    os.chown(targetpath, u, g)
-                        os.chown(targetpath, u, g)
             except EnvironmentError as e:
                 raise ExtractError("could not change owner")
 

Lib/test/test_tempfile.py

@@ -276,7 +276,7 @@ class TestMkstempInner(BaseTestCase):
         file = self.do_create()
         mode = stat.S_IMODE(os.stat(file.name).st_mode)
         expected = 0o600
-        if sys.platform in ('win32', 'os2emx'):
+        if sys.platform == 'win32':
             # There's no distinction among 'user', 'group' and 'world';
             # replicate the 'user' bits.
             user = expected >> 6
@@ -310,7 +310,7 @@ class TestMkstempInner(BaseTestCase):
         # On Windows a spawn* /path/ with embedded spaces shouldn't be quoted,
         # but an arg with embedded spaces should be decorated with double
         # quotes on each end
-        if sys.platform in ('win32',):
+        if sys.platform == 'win32':
             decorated = '"%s"' % sys.executable
             tester = '"%s"' % tester
         else:
@@ -479,7 +479,7 @@ class TestMkdtemp(BaseTestCase):
             mode = stat.S_IMODE(os.stat(dir).st_mode)
             mode &= 0o777 # Mask off sticky bits inherited from /tmp
             expected = 0o700
-            if sys.platform in ('win32', 'os2emx'):
+            if sys.platform == 'win32':
                 # There's no distinction among 'user', 'group' and 'world';
                 # replicate the 'user' bits.
                 user = expected >> 6

Lib/test/test_threading.py

@@ -451,8 +451,7 @@ class ThreadJoinOnShutdown(BaseTestCase):
     # #12316 and #11870), and fork() from a worker thread is known to trigger
     # problems with some operating systems (issue #3863): skip problematic tests
     # on platforms known to behave badly.
-    platforms_to_skip = ('freebsd4', 'freebsd5', 'freebsd6', 'netbsd5',
+    platforms_to_skip = ('freebsd4', 'freebsd5', 'freebsd6', 'netbsd5')
-                         'os2emx')
 
     def _run_and_join(self, script):
         script = """if 1: