code: def is_true_slices(l):
      """
      Find non-trivial slices in "l": return a list of booleans with same length.
      """
      return [isinstance(k, slice) and not is_null_slice(k) for k in l]
  
imports: import collections
  from datetime import datetime, timedelta
  from functools import partial
  import inspect
  import numpy
  from pandas._libs import lib, tslibs
  import pandas.compat
  from pandas.compat import PY36, OrderedDict, iteritems
  from pandas.core.dtypes.cast import construct_1d_object_array_from_listlike
  from pandas.core.dtypes.common import is_array_like, is_bool_dtype, is_extension_array_dtype, is_integer
  from pandas.core.dtypes.generic import ABCIndex, ABCIndexClass, ABCSeries
  from pandas.core.dtypes.inference import _iterable_not_string
  from pandas.core.dtypes.missing import isna, isnull, notnull
label_desc: Use image node_id 19 for calling a global function with example usage: is_true_slices(l) and returns: unknown