class_docstr: Test environment for different dtype conversion semantics.
code: def __exit__(self, exc_type, exc_value, exc_traceback):
      ops.set_dtype_conversion_mode(self._old_promo_mode)
  
file_path: tensorflow-upstream/tensorflow/python/ops/weak_tensor_test_util.py
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework.weak_tensor import WeakTensor
label_desc: Use image node_id 3 for calling the DtypeConversionTestEnv obj's underlying member method code with example usage: obj.__exit__(exc_type, exc_value, exc_traceback) without return types