def ancestors(self):
        """Returns list of ancestor task specs based on inputs"""
        results = []

        def recursive_find_ancestors(task, stack):
            for input in task.inputs:
                if input not in stack:
                    stack.append(input)
                    recursive_find_ancestors(input, stack)
        recursive_find_ancestors(self, results)

        return results
def ancestors(self):
        
        results = []

        def recursive_find_ancestors(task, stack):
            for input in task.inputs:
                if input not in stack:
                    stack.append(input)
                    recursive_find_ancestors(input, stack)
        recursive_find_ancestors(self, results)

        return results
def ancestors ( self ) : results = [ ] def recursive_find_ancestors ( task , stack ) : for input in task . inputs : if input not in stack : stack . append ( input ) recursive_find_ancestors ( input , stack ) recursive_find_ancestors ( self , results ) return results
Returns list of ancestor task specs based on inputs
Returns list of ancestor task specs based on inputs