def extract_suffixed_keys(dictionary, suffix):
    """Returns a dictionary with all keys from :obj:`dictionary` that are suffixed
  with :obj:`suffix`.
  """
    sub_dict = {}
    for key, value in dictionary.items():
        if key.endswith(suffix):
            original_key = key[:-len(suffix)]
            sub_dict[original_key] = value
    return sub_dict
