code: def begin_run_group(project):
      
      from benchbuild.utils.db import create_run_group
      from datetime import datetime
  
      group, session = create_run_group(project)
      group.begin = datetime.now()
      group.status = 'running'
  
      session.commit()
      return group, session
docs: Begin a run_group in the database.
  
      A run_group groups a set of runs for a given project. This models a series
      of runs that form a complete binary runtime test.
  
      Args:
          project: The project we begin a new run_group for.
  
      Returns:
          ``(group, session)`` where group is the created group in the
          database and session is the database session this group lives in.