Add new example with pynautobot

examples/example1/backend_a.py

@@ -17,7 +17,7 @@
 
 # pylint: disable=wrong-import-order
 from diffsync import DiffSync
-from models import Site, Device, Interface
+from models import Site, Device, Interface  # pylint: disable=no-name-in-module
 
 DATA = {
     "nyc": {

examples/example1/backend_b.py

@@ -17,7 +17,7 @@
 
 # pylint: disable=wrong-import-order
 from diffsync import DiffSync
-from models import Site, Device, Interface
+from models import Site, Device, Interface  # pylint: disable=no-name-in-module
 
 DATA = {
     "atl": {

examples/example1/backend_c.py

@@ -17,7 +17,7 @@
 
 # pylint: disable=wrong-import-order
 from diffsync import DiffSync
-from models import Site, Device, Interface
+from models import Site, Device, Interface  # pylint: disable=no-name-in-module
 
 DATA = {
     "nyc": {

examples/example3/README.md

@@ -0,0 +1,41 @@
+
+# Example 3
+
+This is a simple example to show how DiffSync can be used to compare and synchronize data with a remote system like [Nautobot](https://nautobot.readthedocs.io) via a REST API.
+
+For this example, we have a shared model for Region and Country defined in `models.py`.
+A country must be part of a region and has an attribute to capture its population.
+
+The comparison and synchronization of dataset is done between a local JSON file and the [public instance of Nautobot](https://demo.nautobot.com).
+
+
+## Install the requirements
+
+to use this example you must have some dependencies installed, please make sure to run 
+```
+pip install -r requirements.txt
+```
+
+## Setup the environment
+
+By default this example will interact with the public sandbox of Nautobot at https://demo.nautobot.com but you can use your own version of Nautobot by providing a new URL and a new API token using the environment variables `NAUTOBOT_URL` & `NAUTOBOT_TOKEN`
+
+```
+export NAUTOBOT_URL = "https://demo.nautobot.com"
+export NAUTOBOT_TOKEN = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+```
+
+## Try the example
+
+The first time you run this example, a lot of changes should be reported between Nautobot and the local data because by default the demo instance doesn't have the subregion defined.
+After the first sync, on subsequent runs, the diff should show no changes. 
+At this point, `Diffsync` will be able to identify and fix all changes in Nautobot. You can try to add/update or delete any country in Nautobot and DiffSync will automatically catch it and it will fix it with running in sync mode.
+
+```
+### DIFF Compare the data between Nautobot and the local JSON file.
+python main.py --diff
+
+### SYNC Update the list of country in Nautobot.
+python main.py --sync
+```
+