[Django]-Django url pattern – string parameter

In newer versions of Django such as 2.1 you can use

path('polls/<str:poll_id>', views.polls_detail)

as given here Django URL dispatcher

def polls_detail(request,poll_id):
#process your request here

for having a string parameter in url you can have:
url like this:

url(r'^polls/(?P<string>[\w\-]+)/$','polls.views.detail')

This will even allow the slug strings to pass
eg:strings like node-js etc.

Starting in Django 2.0 it is easier to handle string parameters in URLs with the addition of the slug symbol, which is used just like int in urls.py:

from django.urls import path

urlpatterns = [
    path('something/<slug:foo>', views.slug_test),
]

And in your function-based or class-based view you would handle it just like any other parameter:

def slug_test(request, foo):
    return HttpResponse('Slug parameter is: ' + foo)

From Django 2.0 onward, path has been introduced. path does not take reg ex in urls, hence it is meant to be a simplified version of the older url

From 2.0 onward you can use path instead like below :

path('polls/<poll_id>', views.polls_detail)

string path parameters need not be explicitly specified, as default data type for path parameters is string itself.

Ref : https://docs.djangoproject.com/en/2.0/releases/2.0/#whats-new-2-0

If you are using Django version >= 2.0, then this is done simply like below.

from django.urls import path    

urlpatterns = [
    ...
    path('polls/<string>/$','polls.views.detail')
    ...
]

Source: https://docs.djangoproject.com/en/2.0/ref/urls/#django.urls.path

In case your angle-bracket argument is a path, i.e. contains "/", you’ll have to use path:.

Example:
path('section/<path:some_path>,app.views.some_view,name='some_name')

Source: https://docs.djangoproject.com/en/4.0/topics/http/urls/#path-converters

(EDITED)
"str – Matches any non-empty string, EXCLUDING the path separator, ‘/’. This is the default if a converter isn’t included in the expression.

slug – Matches any slug string consisting of ASCII letters or numbers, plus the hyphen and underscore characters. For example, building-your-1st-django-site.

path – Matches any non-empty string, INCLUDING the path separator, ‘/’. This allows you to match against a complete URL path rather than a segment of a URL path as with str."