# coding: utf-8
# AUTO-GENERATED FILE -- DO NOT EDIT

""" This module provides access to operating system functionality that is
standardized by the C Standard and the POSIX standard (a thinly
disguised Unix interface).  Refer to the library manual and
corresponding Unix manual entries for more information on calls. """

CLD_CONTINUED = 6
CLD_DUMPED = 3
CLD_EXITED = 1
CLD_TRAPPED = 4
EX_CANTCREAT = 73
EX_CONFIG = 78
EX_DATAERR = 65
EX_IOERR = 74
EX_NOHOST = 68
EX_NOINPUT = 66
EX_NOPERM = 77
EX_NOUSER = 67
EX_OK = 0
EX_OSERR = 71
EX_OSFILE = 72
EX_PROTOCOL = 76
EX_SOFTWARE = 70
EX_TEMPFAIL = 75
EX_UNAVAILABLE = 69
EX_USAGE = 64
F_LOCK = 1
F_OK = 0
F_TEST = 3
F_TLOCK = 2
F_ULOCK = 0
NGROUPS_MAX = 65536
O_ACCMODE = 3
O_APPEND = 1024
O_ASYNC = 8192
O_CLOEXEC = 524288
O_CREAT = 64
O_DIRECT = 16384
O_DIRECTORY = 65536
O_DSYNC = 4096
O_EXCL = 128
O_LARGEFILE = 0
O_NDELAY = 2048
O_NOATIME = 262144
O_NOCTTY = 256
O_NOFOLLOW = 131072
O_NONBLOCK = 2048
O_RDONLY = 0
O_RDWR = 2
O_RSYNC = 1052672
O_SYNC = 1052672
O_TRUNC = 512
O_WRONLY = 1
POSIX_FADV_DONTNEED = 4
POSIX_FADV_NOREUSE = 5
POSIX_FADV_NORMAL = 0
POSIX_FADV_RANDOM = 1
POSIX_FADV_SEQUENTIAL = 2
POSIX_FADV_WILLNEED = 3
PRIO_PGRP = 1
PRIO_PROCESS = 0
PRIO_USER = 2
P_ALL = 0
P_PGID = 2
P_PID = 1
RTLD_DEEPBIND = 8
RTLD_GLOBAL = 256
RTLD_LAZY = 1
RTLD_LOCAL = 0
RTLD_NODELETE = 4096
RTLD_NOLOAD = 4
RTLD_NOW = 2
R_OK = 4
SCHED_BATCH = 3
SCHED_FIFO = 1
SCHED_IDLE = 5
SCHED_OTHER = 0
SCHED_RESET_ON_FORK = 1073741824
SCHED_RR = 2
ST_NOSUID = 2
ST_RDONLY = 1
TMP_MAX = 238328
WCONTINUED = 8

def WCOREDUMP(status):
  """ WCOREDUMP(status) -> bool
  
  Return True if the process returning 'status' was dumped to a core file. """
  return None

WEXITED = 4

def WEXITSTATUS(status):
  """ WEXITSTATUS(status) -> integer
  
  Return the process return code from 'status'. """
  return 1

def WIFCONTINUED(status):
  """ WIFCONTINUED(status) -> bool
  
  Return True if the process returning 'status' was continued from a
  job control stop. """
  return None

def WIFEXITED(status):
  """ WIFEXITED(status) -> bool
  
  Return true if the process returning 'status' exited using the exit()
  system call. """
  return None

def WIFSIGNALED(status):
  """ WIFSIGNALED(status) -> bool
  
  Return True if the process returning 'status' was terminated by a signal. """
  return None

def WIFSTOPPED(status):
  """ WIFSTOPPED(status) -> bool
  
  Return True if the process returning 'status' was stopped. """
  return None

WNOHANG = 1
WNOWAIT = 16777216
WSTOPPED = 2

def WSTOPSIG(status):
  """ WSTOPSIG(status) -> integer
  
  Return the signal that stopped the process that provided
  the 'status' value. """
  return 1

def WTERMSIG(status):
  """ WTERMSIG(status) -> integer
  
  Return the signal that terminated the process that provided the 'status'
  value. """
  return 1

WUNTRACED = 2
W_OK = 2
XATTR_CREATE = 1
XATTR_REPLACE = 2
XATTR_SIZE_MAX = 65536
X_OK = 1
__doc__ = """This module provides access to operating system functionality that is
standardized by the C Standard and the POSIX standard (a thinly
disguised Unix interface).  Refer to the library manual and
corresponding Unix manual entries for more information on calls."""

class __loader__(object):
  """ Meta path import for built-in modules.
  
      All methods are either class or static methods to avoid the need to
      instantiate the class.
  
       """

  def find_module(self, cls, fullname, path):
    """ Find the built-in module.
    
            If 'path' is ever specified then the search is considered a failure.
    
             """
    pass

  def get_code(self, fullname):
    """ Return None as built-in modules do not have code objects. """
    pass

  def get_source(self, fullname):
    """ Return None as built-in modules do not have source code. """
    pass

  def is_package(self, fullname):
    """ Return False as built-in modules are never packages. """
    pass

  def load_module(self):
    """ Load a built-in module. """
    pass

  def module_repr(self, cls, module):
    pass

__name__ = 'posix'
__package__ = ''

def _exit(status):
  """ _exit(status)
  
  Exit to the system with specified status, without normal exit processing. """
  pass

_have_functions = []

def abort():
  """ abort() -> does not return!
  
  Abort the interpreter immediately.  This 'dumps core' or otherwise fails
  in the hardest way possible on the hosting operating system. """
  return None

def access():
  """ access(path, mode, *, dir_fd=None, effective_ids=False, follow_symlinks=True)
  
  Use the real uid/gid to test for access to a path.  Returns True if granted,
  False otherwise.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  If effective_ids is True, access will use the effective uid/gid instead of
    the real uid/gid.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, access will examine the symbolic link itself instead of the file the
    link points to.
  dir_fd, effective_ids, and follow_symlinks may not be implemented
    on your platform.  If they are unavailable, using them will raise a
    NotImplementedError.
  
  Note that most operations will use the effective uid/gid, therefore this
    routine can be used in a suid/sgid environment to test if the invoking user
    has the specified access to the path.
  The mode argument can be F_OK to test existence, or the inclusive-OR
    of R_OK, W_OK, and X_OK. """
  pass

def chdir(path):
  """ chdir(path)
  
  Change the current working directory to the specified path.
  
  path may always be specified as a string.
  On some platforms, path may also be specified as an open file descriptor.
    If this functionality is unavailable, using it raises an exception. """
  pass

def chmod():
  """ chmod(path, mode, *, dir_fd=None, follow_symlinks=True)
  
  Change the access permissions of a file.
  
  path may always be specified as a string.
  On some platforms, path may also be specified as an open file descriptor.
    If this functionality is unavailable, using it raises an exception.
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, chmod will modify the symbolic link itself instead of the file the
    link points to.
  It is an error to use dir_fd or follow_symlinks when specifying path as
    an open file descriptor.
  dir_fd and follow_symlinks may not be implemented on your platform.
    If they are unavailable, using them will raise a NotImplementedError. """
  pass

def chown():
  """ chown(path, uid, gid, *, dir_fd=None, follow_symlinks=True)
  
  Change the owner and group id of path to the numeric uid and gid.
  
  path may always be specified as a string.
  On some platforms, path may also be specified as an open file descriptor.
    If this functionality is unavailable, using it raises an exception.
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, chown will modify the symbolic link itself instead of the file the
    link points to.
  It is an error to use dir_fd or follow_symlinks when specifying path as
    an open file descriptor.
  dir_fd and follow_symlinks may not be implemented on your platform.
    If they are unavailable, using them will raise a NotImplementedError. """
  pass

def chroot(path):
  """ chroot(path)
  
  Change root directory to path. """
  pass

def close(fd):
  """ close(fd)
  
  Close a file descriptor (for low level IO). """
  pass

def closerange(fd_low, fd_high):
  """ closerange(fd_low, fd_high)
  
  Closes all file descriptors in [fd_low, fd_high), ignoring errors. """
  pass

def confstr(name):
  """ confstr(name) -> string
  
  Return a string-valued system configuration variable. """
  return ""

confstr_names = {}

def ctermid():
  """ ctermid() -> string
  
  Return the name of the controlling terminal for this process. """
  return ""

def device_encoding(fd):
  """ device_encoding(fd) -> str
  
  Return a string describing the encoding of the device
  if the output is a terminal; else return None. """
  return ""

def dup(fd):
  """ dup(fd) -> fd2
  
  Return a duplicate of a file descriptor. """
  return None

def dup2(old_fd, new_fd):
  """ dup2(old_fd, new_fd)
  
  Duplicate file descriptor. """
  pass

environ = {}

class error(Exception):
  """ Base class for I/O related errors. """

  def __init__(self):
    pass

  characters_written = property(None, None, None,
                                )

  errno = None
  filename = None
  strerror = None

def execv(path, args):
  """ execv(path, args)
  
  Execute an executable path with arguments, replacing current process.
  
      path: path of executable file
      args: tuple or list of strings """
  pass

def execve(path, args, env):
  """ execve(path, args, env)
  
  Execute a path with arguments and environment, replacing current process.
  
      path: path of executable file
      args: tuple or list of arguments
      env: dictionary of strings mapping to strings
  
  On some platforms, you may specify an open file descriptor for path;
    execve will execute the program the file descriptor is open to.
    If this functionality is unavailable, using it raises NotImplementedError. """
  pass

def fchdir(fd):
  """ fchdir(fd)
  
  Change to the directory of the given file descriptor.  fd must be
  opened on a directory, not a file.  Equivalent to os.chdir(fd). """
  pass

def fchmod(fd, mode):
  """ fchmod(fd, mode)
  
  Change the access permissions of the file given by file
  descriptor fd.  Equivalent to os.chmod(fd, mode). """
  pass

def fchown(fd, uid, gid):
  """ fchown(fd, uid, gid)
  
  Change the owner and group id of the file given by file descriptor
  fd to the numeric uid and gid.  Equivalent to os.chown(fd, uid, gid). """
  pass

def fdatasync(fildes):
  """ fdatasync(fildes)
  
  force write of file with filedescriptor to disk.
   does not force update of metadata. """
  pass

def fork():
  """ fork() -> pid
  
  Fork a child process.
  Return 0 to child process and PID of child to parent process. """
  return None

def forkpty():
  """ forkpty() -> (pid, master_fd)
  
  Fork a new process with a new pseudo-terminal as controlling tty.
  
  Like fork(), return 0 as pid to child process, and PID of child to parent.
  To both, return fd of newly opened pseudo-terminal.
   """
  return (None, None)

def fpathconf(fd, name):
  """ fpathconf(fd, name) -> integer
  
  Return the configuration limit name for the file descriptor fd.
  If there is no limit, return -1. """
  return 1

def fstat(fd):
  """ fstat(fd) -> stat result
  
  Like stat(), but for an open file descriptor.
  Equivalent to stat(fd=fd). """
  return None

def fstatvfs(fd):
  """ fstatvfs(fd) -> statvfs result
  
  Perform an fstatvfs system call on the given fd.
  Equivalent to statvfs(fd). """
  return None

def fsync(fildes):
  """ fsync(fildes)
  
  force write of file with filedescriptor to disk. """
  pass

def ftruncate(fd, length):
  """ ftruncate(fd, length)
  
  Truncate a file to a specified length. """
  pass

def get_terminal_size(columns, lines):
  """ Return the size of the terminal window as (columns, lines).
  
  The optional argument fd (default standard output) specifies
  which file descriptor should be queried.
  
  If the file descriptor is not connected to a terminal, an OSError
  is thrown.
  
  This function will only be defined if an implementation is
  available for this system.
  
  shutil.get_terminal_size is the high-level function which should 
  normally be used, os.get_terminal_size is the low-level implementation. """
  pass

def getcwd():
  """ getcwd() -> path
  
  Return a unicode string representing the current working directory. """
  return None

def getcwdb():
  """ getcwdb() -> path
  
  Return a bytes string representing the current working directory. """
  return None

def getegid():
  """ getegid() -> egid
  
  Return the current process's effective group id. """
  return None

def geteuid():
  """ geteuid() -> euid
  
  Return the current process's effective user id. """
  return None

def getgid():
  """ getgid() -> gid
  
  Return the current process's group id. """
  return None

def getgrouplist(user, group):
  """ getgrouplist(user, group) -> list of groups to which a user belongs
  
  Returns a list of groups to which a user belongs.
  
      user: username to lookup
      group: base group id of the user """
  return []

def getgroups():
  """ getgroups() -> list of group IDs
  
  Return list of supplemental group IDs for the process. """
  return []

def getloadavg():
  """ getloadavg() -> (float, float, float)
  
  Return the number of processes in the system run queue averaged over
  the last 1, 5, and 15 minutes or raises OSError if the load average
  was unobtainable """
  return (1.0, 1.0, 1.0)

def getlogin():
  """ getlogin() -> string
  
  Return the actual login name. """
  return ""

def getpgid(pid):
  """ getpgid(pid) -> pgid
  
  Call the system call getpgid(). """
  return None

def getpgrp():
  """ getpgrp() -> pgrp
  
  Return the current process group id. """
  return None

def getpid():
  """ getpid() -> pid
  
  Return the current process id """
  return None

def getppid():
  """ getppid() -> ppid
  
  Return the parent's process id.  If the parent process has already exited,
  Windows machines will still return its id; others systems will return the id
  of the 'init' process (1). """
  return None

def getpriority(which, who):
  """ getpriority(which, who) -> current_priority
  
  Get program scheduling priority. """
  return None

def getresgid():
  """ getresgid() -> (rgid, egid, sgid)
  
  Get tuple of the current process's real, effective, and saved group ids. """
  return (None, None, None)

def getresuid():
  """ getresuid() -> (ruid, euid, suid)
  
  Get tuple of the current process's real, effective, and saved user ids. """
  return (None, None, None)

def getsid(pid):
  """ getsid(pid) -> sid
  
  Call the system call getsid(). """
  return None

def getuid():
  """ getuid() -> uid
  
  Return the current process's user id. """
  return None

def getxattr(path, attribute, arg0, follow_symlinks=True):
  """ getxattr(path, attribute, *, follow_symlinks=True) -> value
  
  Return the value of extended attribute attribute on path.
  
  path may be either a string or an open file descriptor.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, getxattr will examine the symbolic link itself instead of the file
    the link points to. """
  return None

def initgroups(username, gid):
  """ initgroups(username, gid) -> None
  
  Call the system initgroups() to initialize the group access list with all of
  the groups of which the specified username is a member, plus the specified
  group id. """
  return None

def isatty(fd):
  """ isatty(fd) -> bool
  
  Return True if the file descriptor 'fd' is an open file descriptor
  connected to the slave end of a terminal. """
  return None

def kill(pid, sig):
  """ kill(pid, sig)
  
  Kill a process with a signal. """
  pass

def killpg(pgid, sig):
  """ killpg(pgid, sig)
  
  Kill a process group with a signal. """
  pass

def lchown(path, uid, gid):
  """ lchown(path, uid, gid)
  
  Change the owner and group id of path to the numeric uid and gid.
  This function will not follow symbolic links.
  Equivalent to os.chown(path, uid, gid, follow_symlinks=False). """
  pass

def link(arg0):
  """ link(src, dst, *, src_dir_fd=None, dst_dir_fd=None, follow_symlinks=True)
  
  Create a hard link to a file.
  
  If either src_dir_fd or dst_dir_fd is not None, it should be a file
    descriptor open to a directory, and the respective path string (src or dst)
    should be relative; the path will then be relative to that directory.
  If follow_symlinks is False, and the last element of src is a symbolic
    link, link will create a link to the symbolic link itself instead of the
    file the link points to.
  src_dir_fd, dst_dir_fd, and follow_symlinks may not be implemented on your
    platform.  If they are unavailable, using them will raise a
    NotImplementedError. """
  pass

def listdir(path='.'):
  """ listdir(path='.') -> list_of_filenames
  
  Return a list containing the names of the files in the directory.
  The list is in arbitrary order.  It does not include the special
  entries '.' and '..' even if they are present in the directory.
  
  path can be specified as either str or bytes.  If path is bytes,
    the filenames returned will also be bytes; in all other circumstances
    the filenames returned will be str.
  On some platforms, path may also be specified as an open file descriptor;
    the file descriptor must refer to a directory.
    If this functionality is unavailable, using it raises NotImplementedError. """
  return []

def listxattr():
  """ listxattr(path='.', *, follow_symlinks=True)
  
  Return a list of extended attributes on path.
  
  path may be either None, a string, or an open file descriptor.
  if path is None, listxattr will examine the current directory.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, listxattr will examine the symbolic link itself instead of the file
    the link points to. """
  pass

def lockf(fd, cmd, len):
  """ lockf(fd, cmd, len)
  
  Apply, test or remove a POSIX lock on an open file descriptor.
  
  fd is an open file descriptor.
  cmd specifies the command to use - one of F_LOCK, F_TLOCK, F_ULOCK or
  F_TEST.
  len specifies the section of the file to lock. """
  pass

def lseek(fd, pos, how):
  """ lseek(fd, pos, how) -> newpos
  
  Set the current position of a file descriptor.
  Return the new cursor position in bytes, starting from the beginning. """
  return None

def lstat(path, arg0, dir_fd=None):
  """ lstat(path, *, dir_fd=None) -> stat result
  
  Like stat(), but do not follow symbolic links.
  Equivalent to stat(path, follow_symlinks=False). """
  return None

def major(device):
  """ major(device) -> major number
  Extracts a device major number from a raw device number. """
  return None

def makedev(major, minor):
  """ makedev(major, minor) -> device number
  Composes a raw device number from the major and minor device numbers. """
  return None

def minor(device):
  """ minor(device) -> minor number
  Extracts a device minor number from a raw device number. """
  return None

def mkdir():
  """ mkdir(path, mode=0o777, *, dir_fd=None)
  
  Create a directory.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError.
  
  The mode argument is ignored on Windows. """
  pass

def mkfifo(arg0):
  """ mkfifo(path, mode=0o666, *, dir_fd=None)
  
  Create a FIFO (a POSIX named pipe).
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  pass

def mknod(file, arg0):
  """ mknod(filename, mode=0o600, device=0, *, dir_fd=None)
  
  Create a filesystem node (file, device special file or named pipe)
  named filename. mode specifies both the permissions to use and the
  type of node to be created, being combined (bitwise OR) with one of
  S_IFREG, S_IFCHR, S_IFBLK, and S_IFIFO. For S_IFCHR and S_IFBLK,
  device defines the newly created device special file (probably using
  os.makedev()), otherwise it is ignored.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  pass

def nice(inc):
  """ nice(inc) -> new_priority
  
  Decrease the priority of process by inc and return the new priority. """
  return None

def open(integer):
  """ open(path, flags, mode=0o777, *, dir_fd=None)
  
  Open a file for low level IO.  Returns a file handle (integer).
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  pass

def openpty():
  """ openpty() -> (master_fd, slave_fd)
  
  Open a pseudo-terminal, returning open fd's for both master and slave end.
   """
  return (None, None)

def pathconf(path, name):
  """ pathconf(path, name) -> integer
  
  Return the configuration limit name for the file or directory path.
  If there is no limit, return -1.
  On some platforms, path may also be specified as an open file descriptor.
    If this functionality is unavailable, using it raises an exception. """
  return 1

pathconf_names = {}

def pipe():
  """ pipe() -> (read_end, write_end)
  
  Create a pipe. """
  return (None, None)

def pipe2(flags):
  """ pipe2(flags) -> (read_end, write_end)
  
  Create a pipe with flags set atomically.
  flags can be constructed by ORing together one or more of these values:
  O_NONBLOCK, O_CLOEXEC.
   """
  return (None, None)

def posix_fadvise(fd, offset, len, advice):
  """ posix_fadvise(fd, offset, len, advice)
  
  Announces an intention to access data in a specific pattern thus allowing
  the kernel to make optimizations.
  The advice applies to the region of the file specified by fd starting at
  offset and continuing for len bytes.
  advice is one of POSIX_FADV_NORMAL, POSIX_FADV_SEQUENTIAL,
  POSIX_FADV_RANDOM, POSIX_FADV_NOREUSE, POSIX_FADV_WILLNEED or
  POSIX_FADV_DONTNEED. """
  pass

def posix_fallocate(fd, offset, len):
  """ posix_fallocate(fd, offset, len)
  
  Ensures that enough disk space is allocated for the file specified by fd
  starting from offset and continuing for len bytes. """
  pass

def pread(fd, buffersize, offset):
  """ pread(fd, buffersize, offset) -> string
  
  Read from a file descriptor, fd, at a position of offset. It will read up
  to buffersize number of bytes. The file offset remains unchanged. """
  return ""

def putenv(key, value):
  """ putenv(key, value)
  
  Change or add an environment variable. """
  pass

def pwrite(fd, string, offset):
  """ pwrite(fd, string, offset) -> byteswritten
  
  Write string to a file descriptor, fd, from offset, leaving the file
  offset unchanged. """
  return None

def read(fd, buffersize):
  """ read(fd, buffersize) -> bytes
  
  Read a file descriptor. """
  return None

def readlink(path, arg0, dir_fd=None):
  """ readlink(path, *, dir_fd=None) -> path
  
  Return a string representing the path to which the symbolic link points.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  return None

def readv(fd, buffers):
  """ readv(fd, buffers) -> bytesread
  
  Read from a file descriptor fd into a number of mutable, bytes-like
  objects ("buffers").  readv will transfer data into each buffer
  until it is full and then move on to the next buffer in the sequence
  to hold the rest of the data.
  
  readv returns the total number of bytes read (which may be less than
  the total capacity of all the buffers. """
  return None

def remove(arg0):
  """ remove(path, *, dir_fd=None)
  
  Remove a file (same as unlink()).
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  pass

def removexattr():
  """ removexattr(path, attribute, *, follow_symlinks=True)
  
  Remove extended attribute attribute on path.
  path may be either a string or an open file descriptor.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, removexattr will modify the symbolic link itself instead of the file
    the link points to. """
  pass

def rename(arg0):
  """ rename(src, dst, *, src_dir_fd=None, dst_dir_fd=None)
  
  Rename a file or directory.
  
  If either src_dir_fd or dst_dir_fd is not None, it should be a file
    descriptor open to a directory, and the respective path string (src or dst)
    should be relative; the path will then be relative to that directory.
  src_dir_fd and dst_dir_fd, may not be implemented on your platform.
    If they are unavailable, using them will raise a NotImplementedError. """
  pass

def replace(arg0):
  """ replace(src, dst, *, src_dir_fd=None, dst_dir_fd=None)
  
  Rename a file or directory, overwriting the destination.
  
  If either src_dir_fd or dst_dir_fd is not None, it should be a file
    descriptor open to a directory, and the respective path string (src or dst)
    should be relative; the path will then be relative to that directory.
  src_dir_fd and dst_dir_fd, may not be implemented on your platform.
    If they are unavailable, using them will raise a NotImplementedError. """
  pass

def rmdir():
  """ rmdir(path, *, dir_fd=None)
  
  Remove a directory.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  pass

def sched_get_priority_max(policy):
  """ sched_get_priority_max(policy)
  
  Get the maximum scheduling priority for *policy*. """
  pass

def sched_get_priority_min(policy):
  """ sched_get_priority_min(policy)
  
  Get the minimum scheduling priority for *policy*. """
  pass

def sched_getaffinity(pid, ncpus):
  """ sched_getaffinity(pid, ncpus) -> cpu_set
  
  Return the affinity of the process with PID *pid*.
  The returned cpu_set will be of size *ncpus*. """
  return None

def sched_getparam(pid):
  """ sched_getparam(pid) -> sched_param
  
  Returns scheduling parameters for the process with *pid* as an instance of the
  sched_param class. A PID of 0 means the calling process. """
  return None

def sched_getscheduler(pid):
  """ sched_getscheduler(pid)
  
  Get the scheduling policy for the process with a PID of *pid*.
  Passing a PID of 0 returns the scheduling policy for the calling process. """
  pass

class sched_param(tuple):
  """ sched_param(sched_priority): A scheduling parameter.
  
  Current has only one field: sched_priority """

  n_fields = 1
  n_sequence_fields = 1
  n_unnamed_fields = 0
  sched_priority = None

def sched_rr_get_interval(pid):
  """ sched_rr_get_interval(pid) -> float
  
  Return the round-robin quantum for the process with PID *pid* in seconds. """
  return 1.0

def sched_setaffinity(pid, cpu_set):
  """ sched_setaffinity(pid, cpu_set)
  
  Set the affinity of the process with PID *pid* to *cpu_set*. """
  pass

def sched_setparam(pid, param):
  """ sched_setparam(pid, param)
  
  Set scheduling parameters for a process with PID *pid*.
  A PID of 0 means the calling process. """
  pass

def sched_setscheduler(pid, policy, param):
  """ sched_setscheduler(pid, policy, param)
  
  Set the scheduling policy, *policy*, for *pid*.
  If *pid* is 0, the calling process is changed.
  *param* is an instance of sched_param. """
  pass

def sched_yield():
  """ sched_yield()
  
  Voluntarily relinquish the CPU. """
  pass

def sendfile(out, in, offset, nbytes):
  """ sendfile(out, in, offset, nbytes) -> byteswritten
  sendfile(out, in, offset, nbytes, headers=None, trailers=None, flags=0)
              -> byteswritten
  Copy nbytes bytes from file descriptor in to file descriptor out. """
  return None

def setegid(gid):
  """ setegid(gid)
  
  Set the current process's effective group id. """
  pass

def seteuid(uid):
  """ seteuid(uid)
  
  Set the current process's effective user id. """
  pass

def setgid(gid):
  """ setgid(gid)
  
  Set the current process's group id. """
  pass

def setgroups(list):
  """ setgroups(list)
  
  Set the groups of the current process to list. """
  pass

def setpgid(pid, pgrp):
  """ setpgid(pid, pgrp)
  
  Call the system call setpgid(). """
  pass

def setpgrp():
  """ setpgrp()
  
  Make this process the process group leader. """
  pass

def setpriority(which, who, prio):
  """ setpriority(which, who, prio) -> None
  
  Set program scheduling priority. """
  return None

def setregid(rgid, egid):
  """ setregid(rgid, egid)
  
  Set the current process's real and effective group ids. """
  pass

def setresgid(rgid, egid, sgid):
  """ setresgid(rgid, egid, sgid)
  
  Set the current process's real, effective, and saved group ids. """
  pass

def setresuid(ruid, euid, suid):
  """ setresuid(ruid, euid, suid)
  
  Set the current process's real, effective, and saved user ids. """
  pass

def setreuid(ruid, euid):
  """ setreuid(ruid, euid)
  
  Set the current process's real and effective user ids. """
  pass

def setsid():
  """ setsid()
  
  Call the system call setsid(). """
  pass

def setuid(uid):
  """ setuid(uid)
  
  Set the current process's user id. """
  pass

def setxattr():
  """ setxattr(path, attribute, value, flags=0, *, follow_symlinks=True)
  
  Set extended attribute attribute on path to value.
  path may be either a string or an open file descriptor.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, setxattr will modify the symbolic link itself instead of the file
    the link points to. """
  pass

def stat(path, arg0, dir_fd=None, follow_symlinks=True):
  """ stat(path, *, dir_fd=None, follow_symlinks=True) -> stat result
  
  Perform a stat system call on the given path.
  
  path may be specified as either a string or as an open file descriptor.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
    dir_fd may not be supported on your platform; if it is unavailable, using
    it will raise a NotImplementedError.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, stat will examine the symbolic link itself instead of the file the
    link points to.
  It is an error to use dir_fd or follow_symlinks when specifying path as
    an open file descriptor. """
  return None

def stat_float_times(newval=None):
  """ stat_float_times([newval]) -> oldval
  
  Determine whether os.[lf]stat represents time stamps as float objects.
  If newval is True, future calls to stat() return floats, if it is False,
  future calls return ints. 
  If newval is omitted, return the current setting.
   """
  return None

class stat_result(tuple):
  """ stat_result: Result from stat, fstat, or lstat.
  
  This object may be accessed either as a tuple of
    (mode, ino, dev, nlink, uid, gid, size, atime, mtime, ctime)
  or via the attributes st_mode, st_ino, st_dev, st_nlink, st_uid, and so on.
  
  Posix/windows: If your platform supports st_blksize, st_blocks, st_rdev,
  or st_flags, they are available as attributes only.
  
  See os.stat for more information. """

  n_fields = 19
  n_sequence_fields = 10
  n_unnamed_fields = 3
  st_atime = None
  st_atime_ns = None
  st_blksize = None
  st_blocks = None
  st_ctime = None
  st_ctime_ns = None
  st_dev = None
  st_gid = None
  st_ino = None
  st_mode = None
  st_mtime = None
  st_mtime_ns = None
  st_nlink = None
  st_rdev = None
  st_size = None
  st_uid = None

def statvfs(path):
  """ statvfs(path)
  
  Perform a statvfs system call on the given path.
  
  path may always be specified as a string.
  On some platforms, path may also be specified as an open file descriptor.
    If this functionality is unavailable, using it raises an exception. """
  pass

class statvfs_result(tuple):
  """ statvfs_result: Result from statvfs or fstatvfs.
  
  This object may be accessed either as a tuple of
    (bsize, frsize, blocks, bfree, bavail, files, ffree, favail, flag, namemax),
  or via the attributes f_bsize, f_frsize, f_blocks, f_bfree, and so on.
  
  See os.statvfs for more information. """

  f_bavail = None
  f_bfree = None
  f_blocks = None
  f_bsize = None
  f_favail = None
  f_ffree = None
  f_files = None
  f_flag = None
  f_frsize = None
  f_namemax = None
  n_fields = 10
  n_sequence_fields = 10
  n_unnamed_fields = 0

def strerror(code):
  """ strerror(code) -> string
  
  Translate an error code to a message string. """
  return ""

def symlink(arg0, arg1, arg2):
  """ symlink(src, dst, target_is_directory=False, *, dir_fd=None)
  
  Create a symbolic link pointing to src named dst.
  
  target_is_directory is required on Windows if the target is to be
    interpreted as a directory.  (On Windows, symlink requires
    Windows 6.0 or greater, and raises a NotImplementedError otherwise.)
    target_is_directory is ignored on non-Windows platforms.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  pass

def sync():
  """ sync()
  
  Force write of everything to disk. """
  pass

def sysconf(name):
  """ sysconf(name) -> integer
  
  Return an integer-valued system configuration variable. """
  return 1

sysconf_names = {}

def system(command):
  """ system(command) -> exit_status
  
  Execute the command (a string) in a subshell. """
  return None

def tcgetpgrp(fd):
  """ tcgetpgrp(fd) -> pgid
  
  Return the process group associated with the terminal given by a fd. """
  return None

def tcsetpgrp(fd, pgid):
  """ tcsetpgrp(fd, pgid)
  
  Set the process group associated with the terminal given by a fd. """
  pass

class terminal_size(tuple):
  """ A tuple of (columns, lines) for holding terminal window size """

  columns = None
  lines = None
  n_fields = 2
  n_sequence_fields = 2
  n_unnamed_fields = 0

def times():
  """ times() -> times_result
  
  Return an object containing floating point numbers indicating process
  times.  The object behaves like a named tuple with these fields:
    (utime, stime, cutime, cstime, elapsed_time) """
  return None

class times_result(tuple):
  """ times_result: Result from os.times().
  
  This object may be accessed either as a tuple of
    (user, system, children_user, children_system, elapsed),
  or via the attributes user, system, children_user, children_system,
  and elapsed.
  
  See os.times for more information. """

  children_system = None
  children_user = None
  elapsed = None
  n_fields = 5
  n_sequence_fields = 5
  n_unnamed_fields = 0
  system = None
  user = None

def truncate(path, length):
  """ truncate(path, length)
  
  Truncate the file given by path to length bytes.
  On some platforms, path may also be specified as an open file descriptor.
    If this functionality is unavailable, using it raises an exception. """
  pass

def ttyname(fd):
  """ ttyname(fd) -> string
  
  Return the name of the terminal device connected to 'fd'. """
  return ""

def umask(new_mask):
  """ umask(new_mask) -> old_mask
  
  Set the current numeric umask and return the previous umask. """
  return None

def uname():
  """ uname() -> uname_result
  
  Return an object identifying the current operating system.
  The object behaves like a named tuple with the following fields:
    (sysname, nodename, release, version, machine) """
  return None

class uname_result(tuple):
  """ uname_result: Result from os.uname().
  
  This object may be accessed either as a tuple of
    (sysname, nodename, release, version, machine),
  or via the attributes sysname, nodename, release, version, and machine.
  
  See os.uname for more information. """

  machine = None
  n_fields = 5
  n_sequence_fields = 5
  n_unnamed_fields = 0
  nodename = None
  release = None
  sysname = None
  version = None

def unlink(arg0):
  """ unlink(path, *, dir_fd=None)
  
  Remove a file (same as remove()).
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  dir_fd may not be implemented on your platform.
    If it is unavailable, using it will raise a NotImplementedError. """
  pass

def unsetenv(key):
  """ unsetenv(key)
  
  Delete an environment variable. """
  pass

def urandom(n):
  """ urandom(n) -> str
  
  Return n random bytes suitable for cryptographic use. """
  return ""

def utime(atime, mtime):
  """ utime(path, times=None, *, ns=None, dir_fd=None, follow_symlinks=True)
  Set the access and modified time of path.
  
  path may always be specified as a string.
  On some platforms, path may also be specified as an open file descriptor.
    If this functionality is unavailable, using it raises an exception.
  
  If times is not None, it must be a tuple (atime, mtime);
      atime and mtime should be expressed as float seconds since the epoch.
  If ns is not None, it must be a tuple (atime_ns, mtime_ns);
      atime_ns and mtime_ns should be expressed as integer nanoseconds
      since the epoch.
  If both times and ns are None, utime uses the current time.
  Specifying tuples for both times and ns is an error.
  
  If dir_fd is not None, it should be a file descriptor open to a directory,
    and path should be relative; path will then be relative to that directory.
  If follow_symlinks is False, and the last element of the path is a symbolic
    link, utime will modify the symbolic link itself instead of the file the
    link points to.
  It is an error to use dir_fd or follow_symlinks when specifying path
    as an open file descriptor.
  dir_fd and follow_symlinks may not be available on your platform.
    If they are unavailable, using them will raise a NotImplementedError. """
  pass

def wait():
  """ wait() -> (pid, status)
  
  Wait for completion of a child process. """
  return (None, None)

def wait3(options):
  """ wait3(options) -> (pid, status, rusage)
  
  Wait for completion of a child process. """
  return (None, None, None)

def wait4(pid, options):
  """ wait4(pid, options) -> (pid, status, rusage)
  
  Wait for completion of a given child process. """
  return (None, None, None)

def waitid(idtype, id, options):
  """ waitid(idtype, id, options) -> waitid_result
  
  Wait for the completion of one or more child processes.
  
  idtype can be P_PID, P_PGID or P_ALL.
  id specifies the pid to wait on.
  options is constructed from the ORing of one or more of WEXITED, WSTOPPED
  or WCONTINUED and additionally may be ORed with WNOHANG or WNOWAIT.
  Returns either waitid_result or None if WNOHANG is specified and there are
  no children in a waitable state. """
  return None

class waitid_result(tuple):
  """ waitid_result: Result from waitid.
  
  This object may be accessed either as a tuple of
    (si_pid, si_uid, si_signo, si_status, si_code),
  or via the attributes si_pid, si_uid, and so on.
  
  See os.waitid for more information. """

  n_fields = 5
  n_sequence_fields = 5
  n_unnamed_fields = 0
  si_code = None
  si_pid = None
  si_signo = None
  si_status = None
  si_uid = None

def waitpid(pid, options):
  """ waitpid(pid, options) -> (pid, status)
  
  Wait for completion of a given child process. """
  return (None, None)

def write(fd, data):
  """ write(fd, data) -> byteswritten
  
  Write bytes to a file descriptor. """
  return None

def writev(fd, buffers):
  """ writev(fd, buffers) -> byteswritten
  
  Write the contents of *buffers* to file descriptor *fd*. *buffers*
  must be a sequence of bytes-like objects.
  
  writev writes the contents of each object to the file descriptor
  and returns the total number of bytes written. """
  return None