# Program to do drawing using Python turtle graphics.
# turtle_drawing.py v0.1
# Author: Vasudev Ram
# http://jugad2.blogspot.in/p/about-vasudev-ram.html
# Copyright (C) 2016 Vasudev Ram.
import turtle
# Create and set up screen and turtle.
t = turtle
# May need to tweak dimensions below for your screen.
t.setup(600, 600)
t.Screen()
t.title("Turtle Drawing Program - by Vasudev Ram")
t.showturtle()
# Set movement step and turning angle.
step = 160
angle = 45
def forward():
'''Move forward step positions.'''
print "forward", step
t.forward(step)
def back():
'''Move back step positions.'''
print "back", step
t.back(step)
def left():
'''Turn left by angle degrees.'''
print "left", angle
t.left(angle)
def right():
'''Turn right by angle degrees.'''
print "right", angle
t.right(angle)
def home():
'''Go to turtle home.'''
print "home"
t.home()
def clear():
'''Clear drawing.'''
print "clear"
t.clear()
def quit():
print "quit"
t.bye()
t.onkey(forward, "Up")
t.onkey(left, "Left")
t.onkey(right, "Right")
t.onkey(back, "Down")
t.onkey(home, "h")
t.onkey(home, "H")
t.onkey(clear, "c")
t.onkey(clear, "C")
t.onkey(quit, "q")
t.onkey(quit, "Q")
t.listen()
t.mainloop()
