Create the following 3dObject.py script:

#!/usr/bin/python3 
""" Create a 3D space with a Tetrahedron inside and rotate the 
    view around using the mouse. 
""" 
from math import sin, cos, radians 
 
import demo 
import pi3d 
 
KEY = {'ESC':27,'NONE':-1} 
 
DISPLAY = pi3d.Display.create(x=50, y=50) 
#capture mouse and key presses 
mykeys = pi3d.Keyboard() 
mymouse = pi3d.Mouse(restrict = False) 
mymouse.start() 
 
def main(): 
  CAMERA = pi3d.Camera.instance() 
  tex = pi3d.Texture("textures/stripwood.jpg") 
  flatsh = pi3d.Shader("uv_flat") 
 
  #Define the coordinates for our shape (x,y,z)  
  A = (-1.0,-1.0,-1.0) 
  B = (1.0,-1.0,1.0) 
  C = (-1.0,-1.0,1.0) 
  D = (-1.0,1.0,1.0) 
  ids = ["A","B","C","D"] 
  coords = [A,B,C,D] 
  myTetra = pi3d.Tetrahedron(x=0.0, y=0.0, z=0.0, 
                             corners=(A,B,C,D)) 
  myTetra.set_draw_details(flatsh,[tex]) 
  # Load ttf font and set the font to black 
  arialFont = pi3d.Font("fonts/FreeMonoBoldOblique.ttf", 
                        "#000000") 
  mystring = [] 
  #Create string objects to show the coordinates 
  for i,pos in enumerate(coords): 
    mystring.append(pi3d.String(font=arialFont, 
                            string=ids[i]+str(pos), 
                            x=pos[0], y=pos[1],z=pos[2])) 
    mystring.append(pi3d.String(font=arialFont, 
                            string=ids[i]+str(pos), 
                            x=pos[0], y=pos[1],z=pos[2], ry=180)) 
  for string in mystring: 
    string.set_shader(flatsh) 
 
  camRad = 4.0 # radius of camera position 
  rot = 0.0 # rotation of camera 
  tilt = 0.0 # tilt of camera 
  k = KEY['NONE'] 
  omx, omy = mymouse.position() 
   
  # main display loop 
  while DISPLAY.loop_running() and not k == KEY['ESC']: 
    k = mykeys.read() 
    mx, my = mymouse.position() 
    rot -= (mx-omx)*0.8 
    tilt += (my-omy)*0.8 
    omx = mx 
    omy = my 
 
    CAMERA.reset() 
    CAMERA.rotate(-tilt, rot, 0) 
    CAMERA.position((camRad * sin(radians(rot)) * 
                     cos(radians(tilt)),  
                     camRad * sin(radians(tilt)),  
                     -camRad * cos(radians(rot)) * 
                     cos(radians(tilt)))) 
    #Draw the Tetrahedron 
    myTetra.draw() 
    for string in mystring: 
      string.draw() 
 
try: 
  main() 
finally: 
  mykeys.close() 
  mymouse.stop() 
  DISPLAY.destroy() 
  print("Closed Everything. END") 
#End 

To run the script, use python3 3dObject.py.