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In a Django app, the current base URL path can be obtained using the request object. Here's an example:

from django.shortcuts import render

def my_view(request):
    base_url = request.scheme + '://' + request.get_host() + request.path
    return render(request, 'my_template.html', {'base_url': base_url})

In the above code:

• request.scheme returns the protocol (http or https)
• request.get_host() returns the hostname of the server (e.g. www.example.com)
• request.path returns the path of the current URL

These three values are combined to create the base_url. This value can then be used in the view or passed to the template as a context variable.