python计算之0.1+0.2不等于0.3的解决方案

#Author:jinhoward
#Date:2020-10-04
A = 0.1
B = 0.2
print(A+B) #结果为：0.30000000000000004

#解决方案
import decimal
C = decimal.Decimal('0.1')
D = decimal.Decimal('0.2')
print(C+D)