code: def sio_dump(obj, **kw):
      sio = StringIO()
      json.dumps(obj, **kw)
      return sio.getvalue()
  
file_path: catboost/contrib/python/simplejson/py3/simplejson/tests/test_iterable.py
imports: import unittest
  from simplejson.compat import StringIO
  import simplejson
label_desc: Use image node_id 2 for calling a global function with example usage: sio_dump(obj) and returns: sio