# 打印99 乘法表 for a in range(1, 10):     for b in range(1, a + 1):  # a = 1         print('{}x{}={}\t'.format(b, a, a * b), end='')     print()

1x1=1

1x2=2 2x2=4

1x3=3 2x3=6 3x3=9

1x4=4 2x4=8 3x4=12 4x4=16

1x5=5 2x5=10 3x5=15 4x5=20 5x5=25

1x6=6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36

1x7=7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49

1x8=8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64

1x9=9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81

""" a = 1  b = 1  print(1 x 1 = 1 \t) a = 2  b = 1  print(1 x 2 = 1 \t, 2 x 2 = 4 """ a = "ABC" print("{}+{}+{}={}".format(a[0], a[1], a[2], a)) #A+B+C=ABC