import turtle, random

t = turtle.Turtle()

def draw_circle(t_name,r,col):
    t_name.color(col)
    t_name.dot(r*2)
c = ["blue","white","red","yellow","lightblue"]

for i in range(100):
    x = random.randint(-250,250)
    y = random.randint(-250,250)
    s = random.randint(50,150)
    t.penup()
    t.goto(x,y)
    draw_circle(t,s,random.choice(c))