for loop possible enhancement
cbbrowne at news.hex.net
Sat Sep 23 06:46:15 CEST 2000
In our last episode (Fri, 22 Sep 2000 18:00:48 GMT),
the artist formerly known as Fredrik Lundh said:
>> However, what would be more useful at times is the
>> possiblity to:
>> for a,b in [[1,2,3,4], [a,b,c,d]]:
>> which, intutively(?) would set a to the value 1 and b to 'a', etc.
> "Standard for-loops in Python iterate over every element in a
> sequence until the sequence is exhausted. However, for-loops
> iterate over only a single sequence, and it is often desirable to
> loop over more than one sequence in a lock-step fashion"
Ah. You're looking for the Common Lisp "LOOP" facility. It can have
an arbitrary set of simultaneous sequences that are "lock-stepped."
(concatenate 'string "aa454" "@" "freenet.carleton.ca")
Your latest program has been judged UNTASTEFUL by the T daemon;
and automatically deleted.
More information about the Python-list