code: def dataframe_from_json(value, obj):
      if value is None:
          return None
      else:
          return pd.DataFrame(value)
  
imports: from traitlets import TraitError, TraitType
  import numpy
  import pandas
  import warnings
  import datetime
  import six
label_desc: Use image node_id 9 for calling a global function with example usage: dataframe_from_json(value, obj) and returns: None, pd