old_contents: from risk_engine import RiskEngine
  import unittest
  
  class RiskEngineTestCase(unittest.TestCase):
  
    def setUp(self):
      self.engine = RiskEngine()
  
    def test_roll_is_near_even(self):
      n = 1000000 
      payout_count = 0
      for roll in range(n):
        if self.engine.run():
          payout_count += 1  
      payout_percentage = float(payout_count)/float(n)
      print(payout_percentage)
      assert (payout_percentage > 0.0 and payout_percentage <= 0.49)
      
  if __name__ == '__main__':
    unittest.main()
  
new_contents: from risk_engine import RiskEngine
  import unittest
  
  class RiskEngineTestCase(unittest.TestCase):
  
    def setUp(self):
      self.engine = RiskEngine()
  
    def test_roll_is_near_even(self):
      n = 1000000 
      payout_count = 0
      for roll in range(n):
        if self.engine.run():
          payout_count += 1  
      payout_percentage = float(payout_count)/float(n)
      print(payout_percentage)
      assert (payout_percentage > 0.0 and payout_percentage <= 0.499)
      
  if __name__ == '__main__':
    unittest.main()
  
subject: Improve the users odds a little