Question

I’m a newbie. In my textbook there is this example:

from django.contrib import admin
from django.db import models

class BlogPost(models.Model):
    title = models.CharField(max_length = 150)
    body = models.TextField()
    timestamp = models.DateTimeField()

class BlogPostAdmin(admin.ModelAdmin):
    list_display = ('title', 'timestamp')

admin.site.register(BlogPost, BlogPostAdmin)

When I started playing with it, I discovered that I may use both tuples and lists here (either list_display = (‘title’, ‘timestamp’) or list_display = [‘title’, ‘timestamp’]).

Could you help me find in the documentation the answer to the question why this is possible?
That may help me elaborate some skills in working with the documentation.

Answer 1

I shouldn’t think it would be mentioned in the Django documentation. It’s trivial Python: in most cases, lists and tuples are equivalent, because the code is just expecting an iterable, which both of those are.

That’s probably the point you’re missing – it’s to do with duck typing, where as long as the object exposes the expected functionality (iterable in this case), you shouldn’t care what exact type it is.