4👍
From Pycharm 2017.1
Prerequisite
Django is specified as the project template language.
To do that, open the Project Settings dialog, under the Project Settings select page Python Template Languages, select project where the templates reside, and then choose Django from the Template Language drop-down list.
Debugging a Django template
To debug a Django template, follow these general steps
Place breakpoints in the desired lines of the Django templates:
Launch Django server in the Debug mode.
This is how it’s done:
On the main menu, choose Run | Edit Configurations.
If the desired Django Server run/debug configuration exists, select it, otherwise create a new one, as described in the section Creating and Editing Run/Debug Configuration.
Then click the button 
on the main toolbar, or press ⌃D.
PyCharm will open the template in your browser, and suspend at the breakpoints you’ve set.
The Debugger session starts, and Debug tool window appears.
In the Debug tool window, you can:
Examine the rendering contexts in the Variables pane.
Step through the breakpoints defined within the Django template.
Use the debugging console.
If you want to trace back exceptions that are raised in course of template debugging, open Breakpoints dialog, and in the Django Exception Breakpoints tab, select the check box Suspend.
Debugging Jinja and Mako templates is not supported.
https://www.jetbrains.com/help/pycharm/2017.1/debugging-django-templates.html