This code repository consists of the following apps
API Basic
Cisco App
<h2>Walmart Stores</h2>
There are multiple classes in the models.py: Region,  Country, State, City and Location. There is a foreign key relationship among them. It creates a Region hierarchy.
Region(name)
Country(name, region)
State(name, country)
City(name, state)
LocationData(name, city)

Serializer classes have been defined that inherit from the Model Serializer class.
Each one has a Meta class that refers to the model and takes all fields.

Data has been inserted using the admin login.

Views.py
ListAPIView has been used.
Region name is extracted from the URL using self.kwargs.get
Queryset filter has been used to extract relevant data



URLS file has regular expression form of URLs
http://127.0.0.1:8000/api/location/<region>/
http://127.0.0.1:8000/api/location/<region>/<country>/
http://127.0.0.1:8000/api/location/<region>/<country>/<state>/
http://127.0.0.1:8000/api/location/<region>/<country>/<state>/<city>/

Example:
http://127.0.0.1:8000/api/location/East/Japan/