Snippet showing how to define (and pass on) workflow-wide parameters in the luigi workflow system. Courtesy of Joe Ennever ("stolen" from https://groups.google.com/forum/#!msg/luigi-user/7zIS_qseNOM/TWcYtRe5SVoJ )

luigi_params_mixin.py

class FooParamsMixin(object):
  param1 = luigi.Parameter()
  param2 = luigi.Parameter()
  ...
  
  def foo_params(self):
    return { 'param1': self.param1, 'param2' : self.param2, ... }

class TaskA(FooParamsMixin, luigi.Task):
   def requires(self):
      return TaskB(**self.foo_params(), # plus any other params)

class TaskB(FooParamsMixin, luigi.Task):
   pass

I don't think you need foo_params.

Line 11 could be:

return TaskB(*self.param_args, **self.param_kwargs)