class_docstr: Borrowed from http://bit.ly/2uyWD9X
code: def __init__(self, filename):
      super(NotMocked, self).__init__(
          "The file %s was opened, but not mocked." % filename
      )
      self.filename = filename
  
imports: from contextlib import contextmanager
  import io
  import mock
label_desc: Use image node_id 1 to create a new NotMocked object from inherited base classes: Exception with example: obj = NotMocked(filename)