## Lecture 5 (Sherriff) - Turtle Power!

#### Lecture Date: Friday, September 2

Today, we are going to move a bit quick, but mainly so you can see a quick overview of a lot of concepts.

First, you need to get everything setup to go!

- Open PyCharm and either make a new project or open an existing one.
- Make a new Python file called turtle_drawing.py.
- Start by making a new turtle!

Here's some starter code:

```
import turtle
tom = turtle.Turtle()
tom.forward(50)
turtle.done()
```

Let's start making this a bit more complex. We'll work up to some of the code below.

```
# Mark Sherriff (mss2x)
import turtle
import random
def draw_square(t, x, y):
t.penup()
t.goto(x,y)
t.pendown()
rand_color = random.randint(0,len(colors)-1)
t.color(colors[rand_color])
for i in range(4):
t.forward(100)
t.left(90)
tom = turtle.Turtle()
tom.speed("fastest")
colors = ["green", "red", "yellow", "orange", "pink", "cyan"]
for i in range(10):
rand_x = random.randint(-100,100)
rand_y = random.randint(-100,100)
draw_square(tom,rand_x,rand_y)
# draw_square(tom)
turtle.done()
```

Another example:

```
import turtle
def drawShape(t, sides, size):
angle = 360.0 / sides
for i in range(sides):
if t.color()[0] == "red":
t.color("black")
else:
t.color("red")
t.forward(size)
t.left(angle)
dana = turtle.Turtle()
drawShape(dana, 6, 100)
dana.right(180)
drawShape(dana, 5, 100)
turtle.done()
```

Final code we actually completed today:

```
import turtle
import random
yurtle = turtle.Turtle()
yurtle.speed("fastest")
colors = ["green", "red", "yellow", "cyan", "orange", "pink"]
def draw_square(my_turtle, x, y):
my_turtle.penup()
my_turtle.goto(x,y)
my_turtle.pendown()
for i in range(4):
rand_color = random.randint(0,len(colors)-1)
my_turtle.color(colors[rand_color])
my_turtle.forward(100)
my_turtle.left(90)
# Add code to draw 20 squares on the screen at random locations
for i in range(2000):
rand_x = random.randint(-300,300)
rand_y = random.randint(-300,300)
draw_square(yurtle, rand_x,rand_y)
turtle.done()
```