why it is invalid syntax?

Marc 'BlackJack' Rintsch bj_666 at gmx.net
Thu Nov 22 07:47:33 CET 2007


On Thu, 22 Nov 2007 00:00:16 -0600, alf wrote:

> I wonder why it is an invalid syntax:
> 
> 
>  >>> if 1: if 1: if 1: print 1
>    File "<stdin>", line 1
>      if 1: if 1: if 1: print 1
> 
> or
> 
>  >>> if 1: for i in range(10): print i
>    File "<stdin>", line 1
>      if 1: for i in range(10): print i
> 
> I would expect one could nest :

It's quite unreadable and if this would be allowed you would have to
introduce a special rule to forbid ``else``, ``except`` and ``finally``
because it can lead to ambiguities. To which ``if`` does the ``else``
belong to here? ::

  if 1: print 1 if: 1 print 1 else: print 1

Ciao,
	Marc 'BlackJack' Rintsch



More information about the Python-list mailing list