message: Remove unused import and do not use "is" for string comparison
diff: @@ -18,7 +18,6 @@ from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  -import collections
  import os
  import platform
  import tempfile
  @@ -193,7 +192,7 @@ class TrtConversionParams(object):
  DEFAULT_TRT_CONVERSION_PARAMS._replace(...)
  """
  for k, v in vars().items():
  - if v and (k is not "self"):
  + if v and (k != "self"):
  setattr(self, k, v)
  return self
  