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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _find_frame(stack, start=0):
 """Find the frame with the caller on the stack."""

  # We want to find the first place where the layer was called
  # that is *not* an __init__ function of an inheriting layer.
  frame = inspect.getframeinfo(stack[start][0])
  # If we are in an init, move on.
  if frame.function == '__init__':
    return _find_frame(stack, start + 1)
  return frame