code: def isdatelike(ds):
      """Has a date or datetime measure
  
      >>> isdatelike('int32')
      False
      >>> isdatelike('3 * datetime')
      True
      >>> isdatelike('?datetime')
      True
      """
      ds = launder(ds)
      return ds == date_ or ds == datetime_
  
file_path: datashader/datashader/datashape/predicates.py
imports: import numpy
  from .util import collect, dshape
  from .internal_utils import remove
  from .coretypes import DataShape, Fixed, Var, Ellipsis, Record, Unit, date_, datetime_, TypeVar, to_numpy_dtype, Categorical
  from .typesets import floating, boolean
label_desc: Use image node_id 13 for calling a global function with example usage: isdatelike(ds) and returns: unknown