What does mean 'f' ? It is not imported or instanced..what is it?

Il dom 21 ott 2018, 06:24 Tim Vogt (Tim Vogt) <timtv...@gmail.com> ha
scritto:

> I try to make a test with has an error
> any suggestions?
> tim
>
>
>     expected_author = f'{post.author}
>                                     ^
> SyntaxError: EOL while scanning string literal
>
>
> ----------------------------------------------------------------------
> Ran 1 test in 0.000s
>
> FAILED (errors=1)
> Destroying test database for alias 'default'...
> MacBook-Pro-15-Officerebel:blogapi timvogt$
>
>
> from django.test import TestCase
> from django.contrib.auth.models import User
>
> from .models import Post
>
> class BlogTests(TestCase):
>
> @classmethod
> def setUpTestData(cls):
> #Create a user
> testuser1 = User.objects.create_user(
> username='testuser1', password='abc123')
> testuser1.save()
>
> # Create a blog post
> test_post = Post.objects.create(
> author=testuser1, title='Blog title', body='Body content...')
> test_post.save()
>
> def test_blog_content(self):
> post = Post.objects.get(id=1)
> expected_author = f'{post.author}'
> expected_title = f'{post.title}'
> expected_body = f'{post.body}'
> self.assertEquals(expected_author, 'testuser1')
> self.assertEquals(expected_title,'Blog title')
> self.assertEquals(expected_body, 'Body content ...')
>
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