[in:]
tot_accuracy = sum(test['func'] == test['predicted']) / len(test)
print("Accuracy all 8 classes together: {}".format(tot_accuracy))

# Total Cohens Kappa
tot_kappa = (fe_accuracy - 0.125) / 0.125
print("Cohens Kappa all 8 classes together: {}".format(tot_kappa))

[out:]
Accuracy all 8 classes together: 0.8285714285714286
Cohens Kappa all 8 classes together: 5.628571428571429