Question

试图找出如何将当前日期锁定为变量以从输入的self.birthday中减去。我看了各种各样的例子和链接但无济于事......建议？

from datetime import datetime
import time

class Person(object):
    def __init__(self, name):
        self.name = name
        self.birthday = None


#getName returns the name of the person         
    def getName(self):
        return self.name

#setBirthday sets their Birthday to a date
    def setBirthday(self):
        day = raw_input('Please enter the date of the month you were born on here ->')
        month = raw_input('Please enter the month of the year you were born on here ->')
        year = raw_input('Please enter the year you were born on here ->')
        self.birthday = int(day),  int(month), int(year)
        print self.birthday

#getAge returns how many days old the individual is     
    def getAge(self):
        dateNow = datetime.datetime.now()
        dateBirth = self.birthday
        timedelta = dateNow - dateBirth
        timedelta = self.daysOld
        print self.daysOld

错误消息是＆＃34; dateNow = datetime.datetime.now（） AttributeError：type object＆＃39; datetime.datetime＆＃39;没有属性＆＃39; datetime＆＃39;＆＃34;

我试过以下

datetime.date.today()

没有成功

我使用的资源：

https://docs.python.org/3/library/datetime.html

https://pymotw.com/2/datetime/

Answer 1

datetime.datetime.now()指的是某个类（第一now）的类（第二datetime）的方法（datetime），但是您没有导入整个库，只是单个类（from datetime import datetime）。导入整个库或调用类而不参考库。

Answer 2

尝试

n= date.today()

我会以字符串格式提供当前日期，然后使用split()。

dateNow = datetime.datetime.now（）导致AttributeError：type object＆＃39; datetime.datetime＆＃39;没有属性＆＃39; datetime＆＃39;＆＃34;在计算年龄时

2 个答案: