code: def read_rttm(rttm_file_path):
      """Reads and returns RTTM in list format.
  
      Arguments
      ---------
      rttm_file_path : str
          Path to the RTTM file to be read.
  
      Returns
      -------
      rttm : list
          List containing rows of RTTM file.
      """
  
      rttm = []
      with open(rttm_file_path, "r") as f:
          for line in f:
              entry = line[:-1]
              rttm.append(entry)
      return rttm
  
imports: import csv
  import numbers
  import warnings
  import scipy
  import pytest
  import numpy
  from scipy import sparse
  from scipy.sparse.linalg import eigsh
  from scipy.sparse.csgraph import connected_components
  from scipy.sparse.csgraph import laplacian
label_desc: Use image node_id 1 for calling a global function with example usage: read_rttm(rttm_file_path) and returns: rttm