Dive into Code

from django.template import TemplateDoesNotExist
from django.views.defaults import page_not_found


class TemplateDoesNotExistMiddleware(object):
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        return self.get_response(request)

    def process_exception(self, request, exception):
        if isinstance(exception, TemplateDoesNotExist):
            return page_not_found(request, exception)

Example of my installation

Installation path of python in my computer is

C:\Python36-32

So in control panel in system settings in advanced settings in path i add the following paths

C:\Python36-32
C:\Python36-32\Scripts

Now i reopen the cmd and i enter python. If it worked the python interpreter line opens.

To install flake8 system-wide run the command

pip install flake8

In atom editor install the package linter-flake8.When package is installed in settings of package in path add the full path of package for example in my configuration i have in path:

C:\Python36-32\Scripts\flake8   without the .exe

sudo dmidecode

from django.apps import apps
from django.conf import settings

def get_apps(request):
    apps_list = {}
    for app in settings.INSTALLED_APPS:
        if 'django' in app:
            pass
        else:
            app_models = apps.get_app_config(app).get_models()
            apps_list[app] = [model for model in app_models]
            if len(apps_list[app]) == 0:
                del apps_list[app]

    return {
        'apps': apps_list
    }

import hashlib
from django.db import models

class Encryptedhash(models.Model):
    encrypted_pk = models.CharField(blank=True, max_length=255)

    class Meta:
        abstract = True

    def save(self, *args, **kwargs):
        super().save(*args, **kwargs)
        m = hashlib.sha224("{}".format(self.pk).encode('utf-8')).hexdigest()
        self.encrypted_pk = m
        super().save(*args, **kwargs)