code: def _call_location(outer=False):
      """Returns call location given level up from current call."""
      # Two up: <_call_location>, <_call_location's caller>
      # tf_inspect is not required here. Please ignore the lint warning by adding
      # DISABLE_IMPORT_INSPECT_CHECK=TRUE to your cl description. Using it caused
      # test timeouts (b/189384061).
      f = inspect.currentframe().f_back.f_back
      parent = f and f.f_back
      if outer and parent is not None:
          f = parent
      return "{}:{}".format(f.f_code.co_filename, f.f_lineno)
  
imports: import collections
  import functools
  import inspect
  import re
  from tensorflow.python.framework import strict_mode
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.util import decorator_utils
  from tensorflow.python.util import is_in_graph_mode
  from tensorflow.python.util import tf_contextlib
  from tensorflow.python.util import tf_decorator
  from tensorflow.python.util import tf_inspect
  from tensorflow.tools.docs import doc_controls
label_desc: Use image node_id 6 for calling a global function with example usage: _call_location(outer) and returns: str