Here's an example of code using API to reduce coupling between components, with comments removed:
class DataService:
def get_data(self):
# Placeholder method to get data from data source
pass
class BusinessLogic:
def __init__(self, data_service):
self.data_service = data_service
def process_data(self):
data = self.data_service.get_data()
# Business logic to process data
pass
class PresentationLayer:
def __init__(self, business_logic):
self.business_logic = business_logic
def show_data(self):
self.business_logic.process_data()
# Presentation logic to show data
pass
if __name__ == "__main__":
# Create instances of components
data_service = DataService()
business_logic = BusinessLogic(data_service)
presentation_layer = PresentationLayer(business_logic)
# Use the presentation layer to interact with the system
presentation_layer.show_data()In this code:
DataServiceis a class responsible for fetching data from a data source.BusinessLogicis a class that contains the logic to process the data obtained from the data service.PresentationLayeris a class responsible for presenting the processed data to the user.- Each component depends on the interface provided by the component it interacts with, rather than on the implementation details.
- This design reduces coupling between components because each component depends only on the interfaces of the components it interacts with, rather than on their concrete implementations.