Turtle Graphic & Module

Question 1

Turtle module

Answer 1

import turtle # allows us to use the turtles module
win = turtle.Screen() # creates a graphics window
alex = turtle.Turtle() # creates a turtle named alex
alex.forward(150) # tell alex to move forward by 150 pixels
alex.left(90) # turn left by 90 degrees
alex.forward(75) # complete the second side of a rectangle

Question 2

More turtle option

Answer 2

import turtle

wn = turtle.Screen()
wn.bgcolor(“lightgreen”) # set the window background color

tess = turtle.Turtle()

tess. color(“blue”) # set tess’s color
tess. pensize(3) # set the width of her pen

Question 3

A herd of turtles

Answer 3

#we can have many turtle at one
import turtle 
wn = turtle.Screen() # Set up the window and its attributes 
wn.bgcolor("lightgreen") 

tess = turtle.Turtle() # Create tess and set some attributes

tess. color(“hotpink”)
tess. pensize(5)

alex = turtle.Turtle() # Create alex

Question 4

“for” loop

Answer 4

import turtle

# Set up alex 
wn = turtle.Screen() 
wn.bgcolor("lightgreen") 
alex = turtle.Turtle() 
alex.pensize(5) 

Repeat four times to draw a square
for i in [0,1,2,3]:
alex.forward(100)
alex.left(90)

wn.exitonclick()

# Repeat four times & change color
for a_color in ["yellow", "red", "purple", "blue"]: 
 alex.color(a_color) 
 alex.forward(100) 
 alex.left(90)

Question 5

“range” function

Answer 5

for i in rage(1, 20, 2): #range(start, stop, step)

print i

Question 6

Extra turtle control

Answer 6

color, fillcolor, heading, position, goto, begin_fill, end_fill, stamp, shape, speed.

Question 7

math module

Answer 7

#contain typical math function
import math 

print math.pi
print math.e
print math.sqrt(2.0)
print math.sin(math.radians(90)) # sin of 90 degrees

Question 8

random module

Answer 8

import random

prob = random.random() # return a random floating number in [0.0, 1.0)
print prob

diceThrow = random.randrange(1, 7) # return a random integer in [1, 7)
print diceThrow