title: After random import the simulation is always breaking down
body: <p>I want to generate a random number and use it later. It also works, the simulation loads like for 0.5 sec and then I see it. But then the simulation breaks down and the simulation window quits. I also can't use e.g. <code>import random</code> it happens the same thing. Could it be that the random package doesn't work with Vpython?</p>
  
  <pre><code>Syntax error File "/Users/colinm/Desktop/random.py", line 2 import random from randint ^ SyntaxError: invalid syntax –
  </code></pre>
  
  <p>Code</p>
  
  <pre><code>from vpython import*
  import random from randint
  
  
  
  #Sonne
  sun = sphere(pos = vec(0,0,0), radius = 9, make_trail = True ) 
  sun.mass = 2e30   
  sun.velocity = vec(0,0,0)
  
  #Merkur
  mercury_pos_x = randint(1, 100)
  mercury = sphere(pos = vec(mercury_pos_x,0,0), radius = 5, color=color.red, make_trail = True ) 
  mercury.mass = 3.25e23
  mercury.velocity = vec(0,0,-47000)
  
  #Venus
  venus_pos_x = randint(1, 100)
  venus = sphere(pos = vec(venus_pos_x,0,0), radius = 6, color=color.cyan, make_trail = True ) 
  venus.mass = 4.9e24
  venus.velocity = vec(0,0,-35000)
  </code></pre>