One can reset the game with,

state = env.reset() # reset the game
print('State of the Cart-Pole after reset', state)
print('Shape of state of the Cart-Pole after reset', state.shape)

The above snippet will reset the game and also return you the state (x, x_dot, theta, theta_dot) of the Cart-Pole after the reset, which will be an array of shape (4,)