snakes eat donuts

import sys  ,   math
printer = lambda o: \
   (sys.stdout. \
       write("\x1b[H") and  \
          [sys.stdout.write \
      (str("".join(line)) + \
   "\n") for line in o]);
def render(A, B):
 cosA, cosB, sinA, \
  sinB = math.cos(A), math \
   .cos(B), math.sin(A), \
     math.sin(        B); \
       output, zbuffer =[[' '
     for l in range(screen_width)] for _
     in range(screen_height)], [[0  for
    l in range(screen_width)] for _
   in range(screen_height)]; theta = 0;
 while theta < math.pi:
  theta +=theta_spacing; \
   costheta,\
    sintheta = math.cos(theta),\
   math.sin(theta); phi = 0
  while phi < (2*math.pi):
   phi += phi_spacing
   cosphi, sinphi =\
     math.cos(    \
     phi         ),\
    math.sin(phi);
   cx, cy =   R2   + \
  R1*costheta,R1     *\
 sintheta; x =  \
cx*  (cosB      *\
 cosphi     +sinA*\
  sinB*sinphi )-cy*\
   cosA*sinB; y = cx\
  *(sinB     *    \
cosphi   - sinA*   \
 cosB  *sinphi)+cy* \
  cosA*cosB
   z = K2+cosA  *cx*  \
    sinphi + cy*  sinA;\
     ooz =   1/z;\
    xp = int(     \
  screen_width/2 + \
K1*ooz       *x);\
 yp = int(        \
  screen_height/2  -
   K1       *ooz*y);\
    L = cosphi*      \
     costheta*sinB-   \
      cosA*costheta*   \
     sinphi-sinA*     \
    sintheta+cosB*   (
   cosA*sintheta    -
  costheta*sinA    *
  sinphi          )
   if L > 0 and (ooz>
   zbuffer[yp][xp]) :
    zbuffer[yp]    \
    [xp]=ooz;output \
    [yp]       [xp] =\
    ".,-~:;=!*#$@"[int(
    L*8)]
 printer(output)
theta_spacing = 0.07; \
 phi_spacing = 0.02;   \
  R1,        R2, K2 = 1,\
   2, 5; screen_width =  \
 80; screen_height = 80;  \
  K1 = screen_width * \
   K2*3/(8*(R1+R2));
A, B = 1, 1
while True:
 A += theta_spacing; \
B + phi_spacing
 render(A,B)