code: def encode_rle(predictions):
      return [run_length_encoding(mask) for mask in predictions]
  
imports: import os
  import json
  import sys
  import time
  import numpy
  import pandas
  from PIL import Image
  from tqdm import tqdm
  from pycocotools import mask
  from sklearn.model_selection import KFold
  import settings
label_desc: Use image node_id 2 for calling a global function with example usage: encode_rle(predictions) and returns: unknown