九九乘法表

for i in range(1,10):
    for j in range(1,i+1):
        print('%s x %s = %s'%(i,j,i*j),end='  ')
    print()
# 1 x 1 = 1
# 2 x 1 = 2  2 x 2 = 4
# 3 x 1 = 3  3 x 2 = 6  3 x 3 = 9
# 4 x 1 = 4  4 x 2 = 8  4 x 3 = 12  4 x 4 = 16
# 5 x 1 = 5  5 x 2 = 10  5 x 3 = 15  5 x 4 = 20  5 x 5 = 25
# 6 x 1 = 6  6 x 2 = 12  6 x 3 = 18  6 x 4 = 24  6 x 5 = 30  6 x 6 = 36
# 7 x 1 = 7  7 x 2 = 14  7 x 3 = 21  7 x 4 = 28  7 x 5 = 35  7 x 6 = 42  7 x 7 = 49
# 8 x 1 = 8  8 x 2 = 16  8 x 3 = 24  8 x 4 = 32  8 x 5 = 40  8 x 6 = 48  8 x 7 = 56  8 x 8 = 64
# 9 x 1 = 9  9 x 2 = 18  9 x 3 = 27  9 x 4 = 36  9 x 5 = 45  9 x 6 = 54  9 x 7 = 63  9 x 8 = 72  9 x 9 = 81