Daniel

import randomimport timewidth=50mid = 1pline = ""s = " "change = 0;i=0while 1:        i+=1        ran = random.randint(0,1)        if ran == 0: mid += -2        else : mid += 2        if i%10==0 : change += random.randint(-1,1)        if mid > width-4 : mid = width-4        if mid <= 0 : mid = 0        side = (width-mid)/2        pline = s*(side+change)        pline += "*"*mid        pline +=s*(side-change)        print pline        time.sleep(.02)