old_contents: """
  Utility that detects the package of a given object.
  """
  from __future__ import division, print_function, with_statement
  
  import inspect
  import os
  
  
  def determine_package(some_object):
      """
      Resolves a call by object to a call by package.
      - Determine absolute package name of the given object.
      - When the task gets executed, the worker process will import it.
      """
  
      # expand the module's path to an absolute import
      filename = inspect.getsourcefile(some_object)
      module_path, module_filename = os.path.split(filename)
      module_name, _ = os.path.splitext(module_filename)
      prefix = []
      for directory in module_path.split(os.sep)[::-1]:
          prefix.append(directory)
          candidate = ".".join(prefix[::-1] + [module_name])
          try:
              __import__(name=candidate, globals=globals(), locals=locals(),
                         fromlist=[], level=0)
              some_object = candidate
              return some_object
          except ImportError:
              pass
      raise ImportError("Could not determine the package of the given " +
                        "object. This should not happen.")
  
new_contents: """
  Utility that detects the package of a given object.
  """
  from __future__ import division, print_function, with_statement
  
  import inspect
  import os
  
  
  def determine_package(some_object):
      """
      Resolves a call by object to a call by package.
      - Determine absolute package name of the given object.
      - When the task gets executed, the worker process will import it.
      """
  
      # expand the module's path to an absolute import
      filename = inspect.getsourcefile(some_object)
      module_path, module_filename = os.path.split(filename)
      module_name, _ = os.path.splitext(module_filename)
      prefix = []
      for directory in module_path.split(os.sep)[::-1]:
          prefix.append(directory)
          candidate = ".".join(prefix[::-1] + [module_name])
  
          if candidate.startswith("."):
              candidate = candidate[1:]
  
          try:
              __import__(name=candidate, globals=globals(), locals=locals(),
                         fromlist=[], level=0)
              some_object = candidate
              return some_object
          except ImportError:
              pass
      raise ImportError("Could not determine the package of the given " +
                        "object. This should not happen.")
  
subject: Fix a bug (?) in detmine_package