```python for i in range(1, 10): for j in range(1, i+1): print(f"{j}*{i}={i*j}", end="\t") print() ``` 输出结果: ``` 1*1=1 1*2=2 2*2=4 1*3=3 2*3=6 3*3=9 1*4=4 2*4=8 3*4=12 4*4=16 1*5=5 2*5=10 3*5=15 4\***=20 5\***=25 ...... ```