Chris Rebert wrote: > On Thu, Nov 13, 2008 at 2:07 AM, TP <[EMAIL PROTECTED]> wrote: >> Hi everybody, >> >> Several means to escape a nested loop are given here: >> >> http://stackoverflow.com/questions/189645/how-to-break-out-of-multiple-loops-in-python >> >> According to this page, the best way is to modify the loop by affecting the >> variables that are tested in the loops. Otherwise, use exception: >> >> "If, for some reason, the terminating conditions can't be worked out, >> exceptions are a fall-back plan." >> >> In the following example, is this possible to affect the two iterators to >> escape the two loops once one "j" has been printed: >> > > Non-exception alternative: > > done = False >> for i in range(5): >> for j in range(i): >> print j > done = True > break >> # I would type "break 2" in shell bash >> # In C, I would set j=i-1 and i=4 >> # In Python, is this possible to affect the two iterators? > if done: > break >> Or the only means is to use exception? > > No, you could add a boolean variable and a break condition like above. > Though I would have to ask why you would want to. An exception seems rather cleaner, though of course tastes vary.
regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list