Question

我有一项我无法完成的任务。我是编程的初学者，我想更好地理解我的课程。有人能帮我吗？我真的不明白。

这是作业：

BMI定义为体重/长度2。体重指数在18,5和25之间是理想的，并认为BMI健康的人。该计划接收由两个人组成的输入，其名称，性别，长度和体重。

    Jack Johnson M 1.78 83
    Maria Miller V 1.69 60

将此输入处理为结构化数据。要实现这一点，请使用一个有用的类和有用的方法来增强程序的结构。使用此结构化数据为每个人打印：适当的地址，姓氏，BMI以及是否认为这是健康的声明。

示例：

    Mr. Johnson’s BMI is 26.2 and is unhealthy.
    Mrs. Miller’s BMI is 21.0 and is healthy.

这就是我所拥有的：

    class Person(object):
        def __init__(self):
            self.first_name = first_name
            self.last_name = last_name
            self.sex = sex
            self.length = length    #m
            self.weight = weight    #kg

        def bmi(self):
            return self.weight / self.length ** 2

        def healthy(self):
            if BODYMASSINDEX <25 and BODYMASSINDEX>18.5:
                person = healthy
            else:
                person = unhealthy
            return person

    from person import Person

    file = open("BMIInput.txt")
    invoer = file.read().splitlines()
    details_person1 = invoer[0].split()
    details_person2 = invoer[1].split()

    person1 = Person(details_person1)
    person2 = Person(details_person2)


    print "%s's BMI is %.1f and is %s" %(person1.name, person1.bmi, person1.healthy)

BMI输入是：

    Jack Johnson    M   1.78    83
    Maria Miller    V   1.69    60

Answer 1

将参数添加到init

    class Person(object):
        def __init__(self, first_name, last_name, sex, length, weight):
            self.first_name = first_name
            self.last_name = last_name
            self.sex = sex
            self.length = length    #m
            self.weight = weight    #kg

        def bmi(self):
            return self.weight / self.length ** 2

        def healthy(self):
            if BODYMASSINDEX <25 and BODYMASSINDEX>18.5:
                person = healthy
            else:
                person = unhealthy
            return person

然后解压缩列表：

from person import Person

file = open("BMIInput.txt")
invoer = file.read().splitlines()
details_person1 = invoer[0].split()
details_person2 = invoer[1].split()

person1 = Person(*details_person1)
person2 = Person(*details_person2)


print "%s's BMI is %.1f and is %s" %(person1.name, person1.bmi, person1.healthy)

关于int，float的评论问题更多是你需要的：

只是为了解决这个问题，这不是干净的，也不是正确的方法，但它会起作用：在init里面

self.length = float(length) if type(length) != float else length
self.weight = float(weight) if type(weight) != float else weight

我要做的是：

details_person1 = invoer[0].split()
details_person1[3] = float(details_person1[3])
details_person1[4] = float(details_person1[4])

与details_person2相同的事情

Python中的BMI与文件输入

1 个答案: