plt.figure(figsize=(10,6))

plt.scatter(data1[:,0],data1[:,1])
plt.scatter(data2[:,0],data2[:,1])

sns.kdeplot(data1[:, 0], data1[:, 1], levels=20, linewidth=10, color='k', alpha=0.2)
sns.kdeplot(data2[:, 0], data2[:, 1], levels=20, linewidth=10, color='k', alpha=0.2)

plt.grid(False)
plt.show()