class typing.io Wrapper namespace for I/O stream types. This defines the generic type IO[AnyStr] and aliases TextIO and BinaryIO for respectively IO[str] and IO[bytes]. These representing the types of I/O streams such as returned by open().

random.randrange(stop) random.randrange(start, stop[, step]) Return a randomly selected element from range(start, stop, step). This is equivalent to choice(range(start, stop, step)), but doesn’t actually build a range object. The positional argument pattern matches that of range(). Keyword arguments should not be used because the function may use them in unexpected ways. Changed in version 3.2: randrange() is more sophisticated about producing equally distributed values. Formerly it used a s

socket.CMSG_SPACE(length) Return the buffer size needed for recvmsg() to receive an ancillary data item with associated data of the given length, along with any trailing padding. The buffer space needed to receive multiple items is the sum of the CMSG_SPACE() values for their associated data lengths. Raises OverflowError if length is outside the permissible range of values. Note that some systems might support ancillary data without providing this function. Also note that setting the buffer

close(self) Close the transport. If the transport has a buffer for outgoing data, buffered data will be flushed asynchronously. No more data will be received. After all buffered data is flushed, the protocol’s connection_lost() method will be called with None as its argument.

threading.main_thread() Return the main Thread object. In normal conditions, the main thread is the thread from which the Python interpreter was started. New in version 3.4.

coroutine asyncio.create_subprocess_exec(*args, stdin=None, stdout=None, stderr=None, loop=None, limit=None, **kwds) Create a subprocess. The limit parameter sets the buffer limit passed to the StreamReader. See AbstractEventLoop.subprocess_exec() for other parameters. Return a Process instance. This function is a coroutine.

cancel() Cancel the future and schedule callbacks. If the future is already done or cancelled, return False. Otherwise, change the future’s state to cancelled, schedule the callbacks and return True.

msilib.gen_uuid() Return a new UUID, in the format that MSI typically requires (i.e. in curly braces, and with all hexdigits in upper-case).

sys.stderr File objects used by the interpreter for standard input, output and errors: stdin is used for all interactive input (including calls to input()); stdout is used for the output of print() and expression statements and for the prompts of input(); The interpreter’s own prompts and its error messages go to stderr. These streams are regular text files like those returned by the open() function. Their parameters are chosen as follows: The character encoding is platform-dependent. U

os.times() Returns the current global process times. The return value is an object with five attributes: user - user time system - system time children_user - user time of all child processes children_system - system time of all child processes elapsed - elapsed real time since a fixed point in the past For backwards compatibility, this object also behaves like a five-tuple containing user, system, children_user, children_system, and elapsed in that order. See the Unix manual page tim