Convert a time in seconds since the Epoch to a string in local time. This is equivalent to asctime(localtime(seconds)). When the time tuple is not present, current time as returned by localtime() is used.
Exit the interpreter by raising SystemExit(status). If the status is omitted or None, it defaults to zero (i.e., success). If the status is numeric, it will be used as the system exit status. If it is another kind of object, it will be printed and the system exit status will be one (i.e., failure).
getpid(...) getpid() -> pid
Return the current process id
kill(...) kill(pid, sig)
Kill a process with a signal.
select(...) select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)
Wait until one or more file descriptors are ready for some kind of I/O. The first three arguments are sequences of file descriptors to be waited for: rlist -- wait until ready for reading wlist -- wait until ready for writing xlist -- wait for an ``exceptional condition'' If only one kind of condition is required, pass  for the other lists. A file descriptor is either a socket or file object, or a small integer gotten from a fileno() method call on one of those.
The optional 4th argument specifies a timeout in seconds; it may be
The return value is a tuple of three lists corresponding to the first three arguments; each contains the subset of the corresponding file descriptors that are ready.
*** IMPORTANT NOTICE *** On Windows and OpenVMS, only sockets are supported; on Unix, all file descriptors.
signal(...) signal(sig, action) -> action
*** IMPORTANT NOTICE *** A signal handler function is called with two arguments: the first is the signal number, the second is the interrupted stack frame.
strerror(...) strerror(code) -> string
Translate an error code to a message string.
write(...) write(fd, string) -> byteswritten
Write a string to a file descriptor.