code: def get_ktrain_data():
      home = os.path.expanduser("~")
      ktrain_data = os.path.join(home, "ktrain_data")
      if not os.path.isdir(ktrain_data):
          os.mkdir(ktrain_data)
      return ktrain_data
  
imports: from .imports import *
  from subprocess import Popen
label_desc: Use image node_id 30 for calling a global function with example usage: get_ktrain_data() and returns: ktrain_data