Implementing the Adapter pattern using Python
The Adapter pattern is a structural design pattern that allows the interface of a class to be converted into another interface expected by the client. Python provides a flexible way to implement the Adapter pattern.
The following is a complete example code of using Python to implement the Adapter pattern:
python
#Target interface
class Target:
def request(self):
pass
#Classes that need to be adapted
class Adaptee:
def specific_request(self):
print("Adaptee specific_request")
#Adapter Class
class Adapter(Target):
def __init__(self, adaptee):
self.adaptee = adaptee
def request(self):
self.adaptee.specific_request()
#Client code
def client_code(target):
target.request()
#Creating Adapt Objects
adaptee = Adaptee()
adapter = Adapter(adaptee)
#Client directly uses adapter
client_code(adapter)
In the above code, we defined the Target interface and implemented the Adaptee class, which contains the specific requests we need to adapt to (specific_request).
Then, we created an adapter class Adapter, which inherits from the Target interface and takes the Adaptee object as a parameter in the constructor.
Finally, in the client code, we instantiated the Adaptee object and the Adapter object, and used the Adapter object to call the request() method to adapt to specific requests of the Adaptee class.
Running the above code will output "Adaptee specific_request", which indicates that the Adapter pattern successfully adapts the interface of the Adaptee class to the Target interface.