code: def read_csv_raw(path, max_line=None):
      with open(path, "r") as f:
          f.readline()  # drop the first line
          line_num = 0
          rtn_list = []
          for line in f:
              i, smiles, value = line.split(",")
              if value == "\n":
                  value = 0
              rtn_list.append((int(i), smiles, float(value)))
  
              line_num += 1
              if max_line and line_num == max_line:
                  break
          return rtn_list
  
file_path: PGL/examples/kddcup2021/PCQM4M/features/obabel_utils.py
imports: import os
  from rdkit import Chem
label_desc: Use image node_id 3 for calling a global function with example usage: read_csv_raw(path, max_line) and returns: rtn_list