Very Horrible Question About Goto's

[Michael Hudson]

Michael Hudson <mwh21 at cam.ac.uk> writes:

> Gaetan Corneau <corg at copernic.com> writes:
> 
> > I was surprised to learn that Python doesn't have a goto statement.
> > Would it be difficult to add?
> 
> No. The necessary opcodes are there (well, the one you need:
> JUMP_ABSOLUTE).  You could use bytecodehacks to implement it, if you
> liked...

Oh, hang on: the block stack would cause problems; how would you get

def f(x):
    label: bob
    for i in x:
        if x: 
            goto: bob

to work? (by declaring it to be an error, I suppose).

Cheers,
M.

-- 
41. Some programming languages manage to absorb change, but 
    withstand progress.
     -- Alan Perlis, http://www.cs.yale.edu/~perlis-alan/quotes.html