pixels_pca = pd.DataFrame(pixels_pca)
img_group = pd.DataFrame(img_group).rename(columns={0:'label'})

# 1A2听o
pixels_pca_label = pd.concat([pixels_pca, img_group], axis=1)
pixels_pca_label = pixels_pca_label[[0, 1, 'label']]

# O[v0̕`
pixels_pca_0 = pixels_pca_label[pixels_pca_label['label']==0]
plt.scatter(pixels_pca_0[0], pixels_pca_0[1], c='red', label=0)

# O[v1̕`
pixels_pca_1 = pixels_pca_label[pixels_pca_label['label']==1]
plt.scatter(pixels_pca_1[0], pixels_pca_1[1], c='blue', label=1)

plt.xlabel('1st-comp')
plt.ylabel('2nd-comp')
plt.legend()
plt.grid()
plt.show()
