def __init__()

in src/stepfunctions/steps/states.py [0:0]

• 10 lines of code
• 6 McCabe index (conditional complexity)

    def __init__(self, steps=[]):
        """
        Args:
            steps (list(State), optional): List of states to be chained in-order. (default: [])
        """
        if not isinstance(steps, list):
            raise TypeError("Chain takes a 'list' of steps. You provided an input that is not a list.")
        self.steps = []

        steps_expanded = []
        [steps_expanded.extend(step) if isinstance(step, Chain) else steps_expanded.append(step) for step in steps]
        for step in steps_expanded:
            if steps_expanded.count(step) > 1:
                raise DuplicateStatesInChain("Duplicate states in the chain.")
        list(map(self.append, steps_expanded))