MAINT: Minor refactoring

Author: oyamad

quantecon/game_theory/tests/test_random.py

@@ -28,8 +28,8 @@ def test_covariance_game():
     rho = 1
     g = covariance_game(nums_actions, rho=rho)
     for a in np.ndindex(*nums_actions):
+        payoff_profile = g.payoff_profile_array[a]
         for i in range(N-1):
-            payoff_profile = g.payoff_profile_array[a]
             assert_allclose(payoff_profile[i], payoff_profile[-1], atol=1e-7)
 
     rho = -1 / (N - 1)