oinspect.py 文件源码

def find_file(obj):
    """Find the absolute path to the file where an object was defined.

    This is essentially a robust wrapper around `inspect.getabsfile`.

    Returns None if no file can be found.

    Parameters
    ----------
    obj : any Python object

    Returns
    -------
    fname : str
      The absolute path to the file where the object was defined.
    """
    obj = _get_wrapped(obj)

    fname = None
    try:
        fname = inspect.getabsfile(obj)
    except TypeError:
        # For an instance, the file that matters is where its class was
        # declared.
        if hasattr(obj, '__class__'):
            try:
                fname = inspect.getabsfile(obj.__class__)
            except TypeError:
                # Can happen for builtins
                pass
    except:
        pass
    return cast_unicode(fname)