code: def get_selection():
      fs = list()
      for f in os.listdir(DATA_PATH):
          if f.endswith(".csv"):
              fs.append(f)
      return jsonify(selection=fs)
  
file_path: luminol/demo/src/start.py
imports: import csv
  import datetime
  import os
  import sys
  import time
  import urllib
  from flask import Flask, jsonify, render_template, request
  from luminol import utils, anomaly_detector, correlator
  from rca import RCA
label_desc: Use image node_id 2 for calling a global function with example usage: get_selection() and returns: jsonify