Download our e-book of Introduction To Python
Related Blog
Matplotlib - Subplot2grid() FunctionDiscuss Microsoft Cognitive ToolkitMatplotlib - Working with ImagesMatplotlib - PyLab moduleMatplotlib - Working With TextMatplotlib - Setting Ticks and Tick LabelsCNTK - Creating First Neural NetworkMatplotlib - MultiplotsMatplotlib - Quiver PlotPython - Chunks and Chinks View More
Top Discussion
How can I write Python code to change a date string from "mm/dd/yy hh: mm" format to "YYYY-MM-DD HH: mm" format? Which sorting technique is used by sort() and sorted() functions of python? How to use Enum in python? Can you please help me with this error? I was just selecting some random columns from the diabetes dataset of sklearn. Decision tree is a classification algo...How can it be applied to load diabetes dataset which has DV continuous Objects in Python are mutable or immutable? How can unclassified data in a dataset be effectively managed when utilizing a decision tree-based classification model in Python? How to leave/exit/deactivate a Python virtualenvironment Join Discussion
Top Courses
Webinars
Design Patterns Adapter in Python
Jigisha Sata
2 years ago
Table of Contents
- Introduction
- The adapter pattern
1. Object Adapter Pattern
2. Class Adapter Pattern
- Implementation of the adapter pattern
- Explanation
Introduction
Adapter
pattern builds the bridge between two incompatible interfaces. This
design pattern also comes under structural pattern as decorators. Adaptor Design
pattern combines the capability of two independent interfaces.
Adapter
involves a single class, which is responsible to join functionalities of
independent or incompatible interfaces.
Let’s
take a real-life example that could help us understand it better.
Adapter Pattern
The
adaptor may be similar to the case of a card reader, which acts as an adapter
between the memory card and a laptop. We plugin the memory card into the card
reader and the card reader into the laptop so that memory card can be read via
the laptop.
The
adapter design helps to work for classes together. It changes the interface of
one class into others as per the requirement. It includes speciation a
polymorphism which try to names into one name with multiple forms. For example,
a shape class which can be used as per the requirements gathered.
The
adapter pattern is mainly of two types–
1. Object Adapter Pattern
Object
Adapter Pattern design pattern relies on object implementation. Hence, it is
known as the Object Adapter Pattern.
2. Class Adapter Pattern
Class
Adapter Pattern is an alternative way to implement the adapter design pattern.
This pattern can be implemented using multiple inheritances.
Implementation of the adapter pattern
Let’s
take an example and see how the adapter pattern is implemented.
class EuropeanSocketInterface:
def voltage(self): pass
def live(self): pass
def neutral(self): pass
def earth(self): pass
# Adaptee
class Socket(EuropeanSocketInterface):
def voltage(self):
return 230
def live(self):
return 1
def neutral(self):
return -1
def earth(self):
return 0
# Target interface
class USASocketInterface:
def voltage(self): pass
def live(self): pass
def neutral(self): pass
# The Adapter
class Adapter(USASocketInterface):
__socket = none
def __init__(self, socket):
self.__socket = socket
def voltage(self):
return 110
def live(self):
return self.__socket.live()
def neutral(self):
return self.__socket.neutral()
# Client
class ElectricKettle:
__power = none
def __init__(self, power):
self.__power = power
def boil(self):
if self.__power.voltage() > 110:
print "Kettle on fire!"
else:
if self.__power.live() == 1 and \
self.__power.neutral() == -1:
print "Coffee time!"
else:
print "No power."
def main():
# Plug in
socket = Socket()
adapter = Adapter(socket)
kettle = ElectricKettle(adapter)
# Make coffee
kettle.boil()
return 0
if __name__ == "__main__":
main()
Output
The output of the
above program is−
Explanation
This
code uses adapter interface with various parameters and attributes. It includes
Adaptee along with Target interface that implements all the attributes and
displays the output as visible.
So,
you can see the output what we got above.
I hope you enjoyed reading this article and finally, you came
to know about Design Patterns Adapter in Python.
For more such blogs/courses on data science, machine
learning, artificial intelligence and emerging new technologies do visit us at InsideAIML.
Thanks for reading…
Happy Learning…