Python written in Python, written in Python (warning: somewhat heavy image included)

[ineedastupidusername]

That's cool and inspired me to do the same basic thing in pygame (python 2.7). The next step would be to make a second "animation" that is really just flat and stationary, then "blend" both animations weighted more toward the stationary one on the endcaps (so the head/tail are more still like yours, I also just used blocks not letters, but they rotate to stay in line with snake body as well).

import pygame,random,time,math

class Spot(object):
    def __init__(ss,x,y,ang,leti):
        ss.x=x
        ss.y=y
        ss.ang=ang
        ss.leti=leti

def makesnake(startang,rot,rad,wordreps,w,h):
    step=w/(wordreps*6.0)
    nsteps=wordreps*6
    spots=[]
    ang=startang
    x=0
    leti=0
    for i in range(nsteps):
        y=(h/2)+(math.sin(math.radians(ang))*rad)
        s=Spot(x,y,None,leti)
        spots.append(s)
        x+=step
        ang=(ang+rot)%360
        leti=(leti+1)%6
    return spots

def makesnakeanim(ang,angstep,rot,rotstep,rotmax,rotmin,rad,radstep,radmax,radmin,wordreps,w,h,frames):
    snakeanim=[]
    for i in range(frames):
        spots=makesnake(ang,rot,rad,wordreps,w,h)
        setspotangs(spots)
        snakeanim.append(spots)
        ang+=angstep
        rot+=rotstep
        if rot>rotmax or rot<rotmin:
            rotstep*=-1
            rot+=rotstep*2
        rad+=radstep
        if rad>radmax or rad<radmin:
            radstep*=-1
            rad+=radstep*2
    return snakeanim

def drawsnake(spots):
    for s in spots:
        roted=pygame.transform.rotate(letrs[s.leti],s.ang)
        screen.blit(roted,(s.x,s.y))

def setspotangs(spots):
    for i in range(len(spots)-1):
        x1=spots[i].x
        y1=spots[i].y
        x2=spots[i+1].x
        y2=spots[i+1].y
        spots[i].ang=math.atan2(y2-y1,x2-x1)*-180.0/math.pi
    x1=spots[-1].x
    y1=spots[-1].y
    x2=spots[-2].x
    y2=spots[-2].y
    spots[-1].ang=math.atan2(y2-y1,x2-x1)*-180.0/math.pi
    #spots[-1].ang=0

letrs=[]
for i in range(6):
    s=pygame.Surface((12,12))
    s.set_colorkey((1,1,1))
    s.fill((random.randint(0,255),random.randint(0,255),random.randint(0,255)))
    letrs.append(s)

sw=512
sh=512
screen=pygame.display.set_mode((sw,sh))

#startang=0
#rot=10
#rad=5

#anim1=makesnakeanim(0,8,5,1,20,1,32,3,96,16,6,512,512,100)
ang=0
angstep=8
rot=20
rotstep=1
rotmax=40
rotmin=10
rad=32
radstep=8
radmax=64
radmin=16
wordreps=6
w=512
h=512
frames=500
anim1=makesnakeanim(ang,angstep,rot,rotstep,rotmax,rotmin,rad,radstep,radmax,radmin,wordreps,w,h,frames)

cc=0
running=True
while running:
    for e in pygame.event.get():
        if e.type==pygame.QUIT:
            running=False

    screen.fill((255,255,255))
    #spots=makesnake(startang,rot,rad,6,512,512)
    #setspotangs(spots)
    #drawsnake(spots)
    drawsnake(anim1[cc])
    
    pygame.display.flip()
    time.sleep(0.1)

    #startang+=4
    #rad+=0.1
    cc=(cc+1)%len(anim1)
pygame.quit()