Wanderer wrote:
I have a bunch of cameras I want to run tests on. They each have
different drivers and interfaces. What I want to do is create python
wrappers so that they all have a common interface and can be called by
the same python test bench program. I'm not sure what to call it. I
don't think it's inheritance. Maybe there is no official thing here
and I just need to brute force my way through it. Is there some
programming methodology I should be using?
Thanks
I guess Interface/Abstract classes are what you are searching for.
# Camera is the interface/abstract base class of all cameras.
# it defines all the function that a Camera needs to implement.
class Camera(object):
def printCameraType(self):
# This code is common to all Cameras
print self.__class__.__name__
def shutdown(self):
# an abstract method raises NotImplementedError and does not
implement anything
# however it indicates to all child classes what they need to
implement.
raise NotImplementedError()
# One implementation of a Camera
class ATypeOfCamera(Camera):
def shutdown():
print 'I am implementing the shutdown for that very specific
Camera type'
return 0
class AnotherTypeOfCamera(Camera):
def shutdown():
print 'Shutting down with the proper implementation'
return 0
Now here is what you test bench whould look like:
from camera import ATypeOfCamera, AnotherTypeOfCamera
for cameraType in [ATypeOfCamera, AnotherTypeOfCamera]:
myCam = cameraType()
myCam.printCameraType()
myCam.shutdown()
JM
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