class_docstr: A no-op restrictions that contains no restrictions.
class_docstr_tok: ["A","no-op","restrictions","that","contains","no","restrictions","."]
code: def is_restricted(self, assets, dt):
      if isinstance(assets, Asset):
          return False
      return pd.Series(index=pd.Index(assets), data=False)
  
imports: import abc
  from numpy import vectorize
  from functools import partial, reduce
  import operator
  import pandas
  from six import with_metaclass, iteritems
  from collections import namedtuple
  from toolz import groupby
  from catalyst.utils.enum import enum
  from catalyst.utils.numpy_utils import vectorized_is_element
  from catalyst.assets import Asset
label_desc: Use image node_id 1 for calling the NoRestrictions obj's underlying member method code with example usage: obj.is_restricted(assets, dt) and returns: pd, False