CODEWITHSUNDEEP
pythonoopdesign-patterns
Rodrigo Ney
Rodrigo Ney

Reputation: 373

Best Design Pattern to execute steps in python

I have to execute multiple actions sequentially in an order dependant manner. 

StepOne(arg1, arg2).execute()
StepTwo(arg1, arg2).execute()
StepThree(arg1, arg2).execute()
StepFour(arg1, arg2).execute()
StepFive(arg1, arg2).execute()

They all inherit from the same Step class and receive the same 2 args.

class Step:
    def __init__(self, arg1, arg2):
        self.arg1 = arg1
        self.arg2 = arg2

    def execute(self):
        raise NotImplementedError('This is an "abstract" method!')

What's the most idiomatic way to execute these actions in order? Is there a design pattern that would apply here?

Upvotes: 2

Views: 685

Answers (1)

Karin
Karin

Reputation: 8610

You could create a list of the step classes, then instantiate and call them in a loop.

step_classes = [StepOne, StepTwo, StepThree, ...]

for c in step_classes:
    c(arg1, arg2).execute()

Upvotes: 6

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