header_store_parse(name, value) The email package calls this method with the name and value provided by the application program when the application program is modifying a Message programmatically (as opposed to a Message created by a parser). The method should return the (name, value) tuple that is to be stored in the Message to represent the header. If an implementation wishes to retain compatibility with the existing email package policies, the name and value should be strings or string s

os.chmod(path, mode, *, dir_fd=None, follow_symlinks=True) Change the mode of path to the numeric mode. mode may take one of the following values (as defined in the stat module) or bitwise ORed combinations of them: stat.S_ISUID stat.S_ISGID stat.S_ENFMT stat.S_ISVTX stat.S_IREAD stat.S_IWRITE stat.S_IEXEC stat.S_IRWXU stat.S_IRUSR stat.S_IWUSR stat.S_IXUSR stat.S_IRWXG stat.S_IRGRP stat.S_IWGRP stat.S_IXGRP stat.S_IRWXO stat.S_IROTH stat.S_IWOTH stat.S_IXOTH This function can support spec

os.plock(op) Lock program segments into memory. The value of op (defined in <sys/lock.h>) determines which segments are locked. Availability: Unix.

end The index after the last invalid data in object.

math.pow(x, y) Return x raised to the power y. Exceptional cases follow Annex ‘F’ of the C99 standard as far as possible. In particular, pow(1.0, x) and pow(x, 0.0) always return 1.0, even when x is a zero or a NaN. If both x and y are finite, x is negative, and y is not an integer then pow(x, y) is undefined, and raises ValueError. Unlike the built-in ** operator, math.pow() converts both its arguments to type float. Use ** or the built-in pow() function for computing exact integer powers.

turtle.onkey(fun, key) turtle.onkeyrelease(fun, key) Parameters: fun – a function with no arguments or None key – a string: key (e.g. “a”) or key-symbol (e.g. “space”) Bind fun to key-release event of key. If fun is None, event bindings are removed. Remark: in order to be able to register key-events, TurtleScreen must have the focus. (See method listen().) >>> def f(): ... fd(50) ... lt(60) ... >>> screen.onkey(f, "Up") >>> screen.listen()

termios.tcflush(fd, queue) Discard queued data on file descriptor fd. The queue selector specifies which queue: TCIFLUSH for the input queue, TCOFLUSH for the output queue, or TCIOFLUSH for both queues.

get_stack(f, t) Get a list of records for a frame and all higher (calling) and lower frames, and the size of the higher part.

turtle.begin_poly() Start recording the vertices of a polygon. Current turtle position is first vertex of polygon.

date.isocalendar() Return a 3-tuple, (ISO year, ISO week number, ISO weekday). The ISO calendar is a widely used variant of the Gregorian calendar. See https://www.staff.science.uu.nl/~gent0113/calendar/isocalendar.htm for a good explanation. The ISO year consists of 52 or 53 full weeks, and where a week starts on a Monday and ends on a Sunday. The first week of an ISO year is the first (Gregorian) calendar week of a year containing a Thursday. This is called week number 1, and the ISO year