code: def save_to_binary(handle, filename):
      LIB.LGBM_DatasetSaveBinary(handle, c_str(filename))
  
file_path: LightGBM/tests/c_api_test/test_.py
imports: import ctypes
  from pathlib import Path
  from platform import system
  import numpy
  from scipy import sparse
label_desc: Use image node_id 3 for calling a global function with example usage: save_to_binary(handle, filename) without return types