fileno() Return the underlying file descriptor (an integer) of the stream if it exists. An

writelines(lines) Write a list of lines to the stream. Line separators are not added, so it is usual for each of the lines provided

ArgumentParser.add_argument_group(title=None, description=None) By default, ArgumentParser groups command-line

time.clock() On Unix, return the current processor time as a floating point number expressed in seconds. The precision, and

time.clock_getres(clk_id) Return the resolution (precision) of the specified clock clk_id.

st_blksize “Preferred” blocksize for efficient file system I/O. Writing to a file in smaller chunks may cause an inefficient

os.sched_get_priority_max(policy) Get the maximum priority value for policy. policy is one of the scheduling

curses.ascii.isdigit(c) Checks for an ASCII decimal digit, '0' through '9'. This is equivalent to

class ctypes.OleDLL(name, mode=DEFAULT_MODE, handle=None, use_errno=False, use_last_error=False) Windows only: Instances of

curses.ascii.isascii(c) Checks for a character value that fits in the 7-bit ASCII set.