class_docstr: ctc utils unittest
class_docstr_tok: ["ctc","utils","unittest"]
docstr: tear down 
docstr_tok: ["tear","down"]
code: def tearDown(self):
      """tear down"""
  
file_path: delta/delta/utils/ctc_utils_test.py
imports: import numpy
  import delta.compat
  from delta.utils import ctc_utils
label_desc: Use image node_id 2 for calling the CTCUtilTest obj's underlying member method code with example usage: obj.tearDown() without return types