计算机计算浮点数出现的误差

for i in range(20):
    print(f" 0.1 * {i} = {0.1 * i}")

 0.1 * 0 = 0.0
 0.1 * 1 = 0.1
 0.1 * 2 = 0.2
 0.1 * 3 = 0.30000000000000004
 0.1 * 4 = 0.4
 0.1 * 5 = 0.5
 0.1 * 6 = 0.6000000000000001
 0.1 * 7 = 0.7000000000000001
 0.1 * 8 = 0.8
 0.1 * 9 = 0.9
 0.1 * 10 = 1.0
 0.1 * 11 = 1.1
 0.1 * 12 = 1.2000000000000002
 0.1 * 13 = 1.3
 0.1 * 14 = 1.4000000000000001
 0.1 * 15 = 1.5
 0.1 * 16 = 1.6
 0.1 * 17 = 1.7000000000000002
 0.1 * 18 = 1.8
 0.1 * 19 = 1.9000000000000001