inspectutils.py 文件源码

def GetFileAndLine(component):
  """Returns the filename and line number of component.

  Args:
    component: A component to find the source information for, usually a class
        or routine.
  Returns:
    filename: The name of the file where component is defined.
    lineno: The line number where component is defined.
  """
  if inspect.isbuiltin(component):
    return None, None

  try:
    filename = inspect.getsourcefile(component)
  except TypeError:
    return None, None

  try:
    unused_code, lineindex = inspect.findsource(component)
    lineno = lineindex + 1
  except IOError:
    lineno = None

  return filename, lineno