code: def time_comment_loadtxt_csv(self, num_lines):
      # benchmark handling of lines with comments
      # when loading in from csv files
  
      # inspired by similar benchmark in pandas
      # for read_csv
  
      # need to rewind StringIO object (unfortunately
      # confounding timing result somewhat) for every
      # call to timing test proper
      np.loadtxt(self.data_comments, delimiter=",")
      self.data_comments.seek(0)
  
imports: from .common import Benchmark, get_squares, get_squares_
  import numpy
  from io import SEEK_SET, StringIO, BytesIO
label_desc: Use image node_id 2 for calling the LoadtxtCSVComments obj's underlying member method code with example usage: obj.time_comment_loadtxt_csv(num_lines) without return types