Difficulty with Tutorial Part 2

[Bruckner de Villiers]

Running Django 3.0 & Python 3.7.3

Everything works per the tutorial until I get to:

q.was_published_recently()

It throws the following error:

File "/Volumes/Data/DevelopmentTraining/django_tutorials/mysite/polls/models.py", line 19, in was_published_recently

    return self.pub_date >= timezone.now() - datetime.timedelta(days=1)

AttributeError: type object 'datetime.datetime' has no attribute 'timedelta'

 

I also tried importing timedelta from datetime – to no avail.

 

models.py code below:

 

import datetime

from datetime import datetime, timedelta

 

from django.db import \

    models

 

from django.utils import timezone

 

# Create your models here.

 

class Question(models.Model):

    question_text = models.CharField(max_length=200)

    pub_date = models.DateTimeField('date published')

 

    def __str__(self):

        return self.question_text

 

    def was_published_recently(self):

        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)

 

class Choice(models.Model):

    question = models.ForeignKey(Question, on_delete=models.CASCADE)

    choice_text = models.CharField(max_length=200)

    votes = models.IntegerField(default=0)

 

    def __str__(self):

        return self.choice_text

 

 

Much obliged,

 

Bruckner de Villiers

+27 (0)83 625 1086

[Daniel Hepper]

You can fix your code by changing datetime.timedelta to timedelta:

    def was_published_recently(self):

        return self.pub_date >= timezone.now() - timedelta(days=1)

The statement "from datetime import datetime, timedelta" imports the classes datetime and timedelta from the module datetime.

If you prefer to use "datetime.timedelta", you would have to use "import datetime" instead of "from datetime import datetime, timedelta"

Hope that helps,

Daniel

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[Sencer Hamarat]

Your timedelta import is correct but usage of the timedelta is not.

Replace "datetime.timedelta(days=1)" with "timedelta(days=1)"

Saygılarımla,

Sencer HAMARAT

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[Bruckner de Villiers]

Thank you Daniel. I believe that issue started with VSCode automatically inserting “from date time import date time” after I hit enter on “import date time”.

Thank you for the quick response. 

Bruckner

0836251086

On 09 Dec 2019, at 10:38, Daniel Hepper <daniel...@gmail.com> wrote:



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[Tafadzwa Marshal]

I advice you to learn learn Python Language first before you start messing with Django.

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