100%. also, why re-invent python's already pretty decent datetime/timedeltas?

and why not a proper python DSL?

  from redengine import minute, hour
  
  @app.run_every(hour + 20*minute)
  def do_first(): [...]
  
  @app.run_after(do_first)
  def do_second1(): [...]
  
  @app.run_after(do_first)
  def do_second2(): [...]
  
  @app.run_after(do_second1 and do_second2)
  def do_last(): [...]