How to remove gaps between subplots

The code below produces gaps between the subplots. How do I remove the gaps between the subplots and make the image a tight grid? import matplotlib.pyplot as plt for i in range(16): i = i + 1 ax1 = plt.subplot(4, 4, i) plt.axis('on') ax1.set_xticklabels([]) ax1.set_yticklabels([]) ax1.set_aspect('equal') plt.subplots_adjust(wspace=None, hspace=None) plt.show()

[aidiary]

余白なしでタイル状にグラフを並べる