【python】基础学习（十）round()&Decimal()&hamcrest() 浮点数处理
print(round(3.447444, 2)) >>3.45
from decimal import Decimal print(Decimal('0.3') + Decimal('0.9')) >>1.2
print(round(3.447444, 2)) >>3.45
from decimal import Decimal print(Decimal('0.3') + Decimal('0.9')) >>1.2