bbox_props = dict(boxstyle=f"round,pad=0.5", ec='black', lw=2, facecolor='white')
for x in range(1,5):
plt.text(x,-0.18, f"{x}학년", fontsize=18, ha='center', va='center', fontweight='bold', bbox=bbox_props)
for y in range(0,2):
plt.text(0.6,y+0.5, f"{y}학기", fontsize=18, ha='center', va='center', fontweight='bold', bbox=bbox_props)
학기노드를 추가하였습니다