2.7/os: remove exception throwing, add misc members (#591)

* 2.7/os: remove exception throwing, add misc members

* added tempnam, tmpnam

stdlib/2.7/os/__init__.pyi

@@ -2,7 +2,7 @@
 
 from typing import (
     List, Tuple, Union, Sequence, Mapping, IO, Any, Optional, AnyStr, Iterator,
-    MutableMapping, NamedTuple
+    MutableMapping, NamedTuple, overload
 )
 from os import path
 
@@ -50,8 +50,7 @@ def getsid(pid: int) -> int: ...
 def setsid() -> None: ...
 def setuid(pid: int) -> None: ...
 
-def strerror(code: int) -> str:
-    raise ValueError()
+def strerror(code: int) -> str: ...
 
 def umask(mask: int) -> int: ...
 def uname() -> Tuple[str, str, str, str, str]: ...
@@ -62,6 +61,9 @@ def fdopen(fd: int, *args, **kwargs) -> IO[Any]: ...
 def popen(command: str, *args, **kwargs) -> Optional[IO[Any]]: ...
 def tmpfile() -> IO[Any]: ...
 
+def tmpnam() -> str: ...
+def tempnam(dir: str = ..., prefix: str = ...) -> str: ...
+
 def popen2(cmd: str, *args, **kwargs) -> Tuple[IO[Any], IO[Any]]: ...
 def popen3(cmd: str, *args, **kwargs) -> Tuple[IO[Any], IO[Any], IO[Any]]: ...
 def popen4(cmd: str, *args, **kwargs) -> Tuple[IO[Any], IO[Any]]: ...
@@ -131,8 +133,7 @@ pathconf_names = ... # type: Mapping[str, int]
 
 def readlink(path: AnyStr) -> AnyStr: ...
 def remove(path: unicode) -> None: ...
-def removedirs(path: unicode) -> None:
-    raise OSError()
+def removedirs(path: unicode) -> None: ...
 def rename(src: unicode, dst: unicode) -> None: ...
 def renames(old: unicode, new: unicode) -> None: ...
 def rmdir(path: unicode) -> None: ...
@@ -148,7 +149,6 @@ _StatVFS = NamedTuple('_StatVFS', [('f_bsize', int), ('f_frsize', int), ('f_bloc
 def fstatvfs(fd: int) -> _StatVFS: ...
 def statvfs(path: unicode) -> _StatVFS: ...
 
-# TODO: stat_float_times, tempnam, tmpnam, TMP_MAX
 def walk(top: AnyStr, topdown: bool = ..., onerror: Any = ...,
          followlinks: bool = ...) -> Iterator[Tuple[AnyStr, List[AnyStr],
                                                     List[AnyStr]]]: ...
@@ -187,11 +187,8 @@ def execve(path: AnyStr, args: Union[Tuple[AnyStr], List[AnyStr]], env: Mapping[
 
 def _exit(n: int) -> None: ...
 
-def fork() -> int:
-    raise OSError()
-
-def forkpty() -> Tuple[int, int]:
-    raise OSError()
+def fork() -> int: ...
+def forkpty() -> Tuple[int, int]: ...
 
 def kill(pid: int, sig: int) -> None: ...
 def killpg(pgid: int, sig: int) -> None: ...
@@ -217,14 +214,14 @@ def startfile(path: unicode, operation: str = ...) -> None: ... # Windows only
 def system(command: unicode) -> int: ...
 def times() -> Tuple[float, float, float, float, float]: ...
 def wait() -> Tuple[int, int]: ... # Unix only
-def waitpid(pid: int, options: int) -> Tuple[int, int]:
-    raise OSError()
-# TODO: wait3, wait4, W...
+def wait3(options: int) -> Tuple[int, int, Any]: ... # Unix only
+def wait4(pid: int, options: int) -> Tuple[int, int, Any]: ... # Unix only
+def waitpid(pid: int, options: int) -> Tuple[int, int]: ...
+
 def confstr(name: Union[str, int]) -> Optional[str]: ...
 confstr_names = ... # type: Mapping[str, int]
 
-def getloadavg() -> Tuple[float, float, float]:
-    raise OSError()
+def getloadavg() -> Tuple[float, float, float]: ...
 
 def sysconf(name: Union[str, int]) -> int: ...
 sysconf_names = ... # type: Mapping[str, int]
@@ -270,6 +267,7 @@ O_DIRECT = 0     # Gnu extension if in C library
 O_DIRECTORY = 0  # Gnu extension if in C library
 O_NOFOLLOW = 0   # Gnu extension if in C library
 O_NOATIME = 0    # Gnu extension if in C library
+O_LARGEFILE = 0  # Gnu extension if in C library
 
 P_NOWAIT = 0
 P_NOWAITO = 0
@@ -279,9 +277,26 @@ P_WAIT = 0
 
 # wait()/waitpid() options
 WNOHANG = 0  # Unix only
-#WCONTINUED = 0  # some Unix systems
-#WUNTRACED = 0  # Unix only
+WCONTINUED = 0  # some Unix systems
+WUNTRACED = 0  # Unix only
 
 P_ALL = 0
 WEXITED = 0
 WNOWAIT = 0
+
+TMP_MAX = 0
+
+# Below are Unix-only
+def WCOREDUMP(status: int) -> bool: ...
+def WEXITSTATUS(status: int) -> int: ...
+def WIFCONTINUED(status: int) -> bool: ...
+def WIFEXITED(status: int) -> bool: ...
+def WIFSIGNALED(status: int) -> bool: ...
+def WIFSTOPPED(status: int) -> bool: ...
+def WSTOPSIG(status: int) -> int: ...
+def WTERMSIG(status: int) -> int: ...
+
+@overload
+def stat_float_times(newvalue: bool = ...) -> None: ...
+@overload
+def stat_float_times() -> bool: ...