code: def test_get():
      def fun(d, x):
          return d.get("item_1", x) ** 2
  
      check_grads(fun, argnum=(0, 1))({"item_1": 3.0}, 2.0)
      check_grads(fun, argnum=(0, 1))({"item_2": 4.0}, 2.0)
      check_grads(fun, argnum=(0, 1))({}, 2.0)
  
file_path: autograd/tests/test_dict.py
imports: import autograd.numpy
  import autograd.numpy.random
  from autograd.test_util import check_grads
  from autograd import dict, isinstance
  from autograd import grad
  import operator
label_desc: Use image node_id 5 for calling a global function with example usage: test_get() and returns: unknown