class_docstr: Serialize data to a JSON formatted string.
docstr: Serialize data of various formats to a JSON formatted string.
  
  Args:
      data (object): Data to be serialized.
  
  Returns:
      str: The data serialized as a JSON string.
docstr_tok: ["Serialize","data","of","various","formats","to","a","JSON","formatted","string",".","Args",":","data","(","object",")",":","Data","to","be","serialized",".","Returns",":","str",":","The","data","serialized","as","a","JSON","string","."]
code: def serialize(self, data):
      """Serialize data of various formats to a JSON formatted string.
  
      Args:
          data (object): Data to be serialized.
  
      Returns:
          str: The data serialized as a JSON string.
      """
      if isinstance(data, dict):
          return json.dumps(
              {
                  key: value.tolist()
                  if isinstance(value, np.ndarray)
                  else value
                  for key, value in data.items()
              }
          )
  
      if hasattr(data, "read"):
          return data.read()
  
      if isinstance(data, np.ndarray):
          return json.dumps(data.tolist())
  
      return json.dumps(data)
  
imports: from __future__ import absolute_import
  import abc
  from collections.abc import Iterable
  import csv
  import io
  import json
  import numpy
  from pandas import DataFrame
  from six import with_metaclass
  from sagemaker.utils import DeferredError
label_desc: Use image node_id 1 for calling the JSONSerializer obj's underlying member method code with example usage: obj.serialize(data) and returns: json, json, data, json