push fuction

top function

pop function

Return or set the pen's attributes. Arguments: pen -- a dictionary with some or all of the below listed keys. **pendi

Perform a Turtle-data update.

Return the turtle's y coordinate --- No arguments. Example (for a Turtle instance named turtle): >>> reset()

Calculate height

function for returning the size of stack

Write text at the current turtle position. Arguments: arg -- info, which is to be written to the TurtleScreen move (optional)

pruning

Find function

Delete the turtle's drawings from the screen. Do not move turtle. No arguments. Delete the turtle's drawings from the screen. Do not

Delete graphics item from canvas. If item is"all" delete all graphics items.

Perform a TurtleScreen update.

Configure lineitem according to provided arguments: coordlist is sequence of coordinates fill is drawing color width is width

Configure polygonitem polyitem according to provided arguments: coordlist is sequence of coordinates fill is filling color

Move turtle to an absolute position. Aliases: setpos | setposition | goto: Arguments: x -- a number or a pair/vecto

A utility function to create a new Binary Tree Node

operation functions

Return or set the turtle's speed. Optional argument: speed -- an integer in the range 0..10 or a speedstring (see below) Se

dummy method - to be overwritten by child class

Create an invisible polygon item on canvas self.cv)

Insert node

Utility function creates a new binary tree node with given key

Set the turtle's second coordinate to y Argument: y -- a number (integer or float) Set the turtle's first coordinate to x, s

Swap Function

Turn turtle counterclockwise by specified angle if angle > 0.

Add edges to the graph

Get the balance factor