in iact3/generate_params.py [0:0]
def __init__(self, key: str, original_value: any,
allowed_values: list = None,
parameters: dict = None):
self.key = key
self.original_value = original_value
self.allowed_values = allowed_values or []
self.parameters = parameters
self.current_value = allowed_values[0] if allowed_values else None
self.next = None
self.prev = None