code: def add_to_metrics_metadata(metrics_df, mixture_id, snr_list):
      """Add a new line to metrics_df"""
      row_metrics = [mixture_id] + snr_list
      metrics_df.loc[len(metrics_df)] = row_metrics
  
imports: import os
  import argparse
  import soundfile
  import pandas
  import numpy
  import functools
  from scipy.signal import resample_poly
  import tqdm.contrib.concurrent
  import glob
  import shutil
label_desc: Use image node_id 21 for calling a global function with example usage: add_to_metrics_metadata(metrics_df, mixture_id, snr_list) without return types