git init

viewer/admin.py

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+from django.contrib import admin
+
+# Register your models here.

viewer/apps.py

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+from django.apps import AppConfig
+
+
+class ViewerConfig(AppConfig):
+    name = 'viewer'

viewer/models.py

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+from django.db import models
+
+# Create your models here.

viewer/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

viewer/urls.py

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+from django.urls import path
+
+from . import views
+
+urlpatterns = [
+    path('', views.index, name='index')
+]

viewer/views.py

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+from django.shortcuts import render
+
+from django.http import HttpResponse
+
+def index(request):
+    """Index view for the simple-viewer project."""
+    return HttpResponse('Hello, World.')