class_docstr: A PipelineHooks that defines no-op methods for all available hooks.
      
code: def running_pipeline(self, pipeline, start_date, end_date):
      yield
  
file_path: zipline/zipline/pipeline/hooks/no.py
imports: from interface import implements
  from zipline.utils.compat import contextmanager
  from .iface import PipelineHooks
label_desc: Use image node_id 1 for calling the NoHooks obj's underlying member method code with example usage: obj.running_pipeline(pipeline, start_date, end_date) without return types