[Python-Dev] Re: String module

[Barry A. Warsaw]

>>>>> "FP" =3D=3D Fran=E7ois Pinard <pinard@iro.umontreal.ca> writes:

    >> By the way, I wonder why the `_' in `sys._getframe()'.

    >> To discourage people from using it.

    FP> Why was it introduced then, since there was already a way
    FP> without it?  Execution speed, maybe?

Because

    try:
        1/0
    except ZeroDivisionError:
        return sys.exc_info()[2].tb_frame.f_back

is slow, hard to remember, and too magical.  Also, sys._getframe()
gives you a better interface for getting frames farther back than
currentframe().

-Barry