.. include:: ../../global.inc .. include:: manual_chapter_numbers.inc .. _new_manual.originate.code: ###################################################################################################### |new_manual.originate.chapter_num|: Python Code for Creating files with ``@originate`` ###################################################################################################### .. seealso:: * :ref:`Manual Table of Contents ` * :ref:`@transform syntax in detail ` * Back to |new_manual.originate.chapter_num|: :ref:`@originate ` ********************************************** Using ``@originate`` ********************************************** :: from ruffus import * #--------------------------------------------------------------- # create initial files # @originate([ ['job1.a.start', 'job1.b.start'], ['job2.a.start', 'job2.b.start'], ['job3.a.start', 'job3.b.start'] ]) def create_initial_file_pairs(output_files): # create both files as necessary for output_file in output_files: with open(output_file, "w") as oo: pass #--------------------------------------------------------------- # first task @transform(create_initial_file_pairs, suffix(".start"), ".output.1") def first_task(input_files, output_file): with open(output_file, "w"): pass #--------------------------------------------------------------- # second task @transform(first_task, suffix(".output.1"), ".output.2") def second_task(input_files, output_file): with open(output_file, "w"): pass # # Run # pipeline_run([second_task]) ************************************ Resulting Output ************************************ :: Job = [None -> [job1.a.start, job1.b.start]] completed Job = [None -> [job2.a.start, job2.b.start]] completed Job = [None -> [job3.a.start, job3.b.start]] completed Completed Task = create_initial_file_pairs Job = [[job1.a.start, job1.b.start] -> job1.a.output.1] completed Job = [[job2.a.start, job2.b.start] -> job2.a.output.1] completed Job = [[job3.a.start, job3.b.start] -> job3.a.output.1] completed Completed Task = first_task Job = [job1.a.output.1 -> job1.a.output.2] completed Job = [job2.a.output.1 -> job2.a.output.2] completed Job = [job3.a.output.1 -> job3.a.output.2] completed Completed Task = second_task