Python程序将公里转换为英里

# 提示用户从控制台输入
kilometers = float(input("Enter value in kilometers: "))

# 转换率
conv_fac = 0.621371

# 计算
miles = kilometers * conv_fac
print('%0.2f kilometers is equal to %0.2f miles' %(kilometers,miles))

Enter value in kilometers: 3.5
3.50 kilometers is equal to 2.17 miles