#!/usr/bin/env python
# coding: utf-8

# # Turtle program & event handling
# http://openbookproject.net/thinkcs/python/english3e/hello_little_turtles.html
# - can't run this notebook in Colab or other online services
# - there are many modules in Python that provide various useful and powerful features
# - TKinter, turtle, email, url, http, etc.
# - running turtle program multiple times from jupyter notebook crashes jupyter server... so run scripts by themselves in turtle folder

# ## 1st turtle program

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import turtle


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help(turtle)


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import turtle             # Allows us to use turtles
wn = turtle.Screen()      # Creates a playground for turtles
alex = turtle.Turtle()    # Create a turtle, assign to alex

alex.forward(50)          # Tell alex to move forward by 50 units
alex.left(90)             # Tell alex to turn by 90 degrees
alex.forward(30)          # Complete the second side of a rectangle

wn.mainloop()             # Wait for user to close window


# ### add some colors

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import turtle
wn = turtle.Screen()
wn.bgcolor("lightgreen")      # Set the window background color
wn.title("Hello, Tess!")      # Set the window title

tess = turtle.Turtle()
tess.color("blue")            # Tell tess to change her color
tess.pensize(3)               # Tell tess to set her pen width

tess.forward(50)
tess.left(120)
tess.forward(50)

wn.mainloop()


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