i=0 a=100 i2=0 a2=100 import turtle as t t.hideturtle() t.goto(-100,0) t.speed(50) t.pen t.circle while i<201: t.circle(a) a=a-1 i=i+1 t.goto(100,0) while i2<201: t.circle(a2) a2=a2-1 i2=i2+1