En Mon, 23 Feb 2009 22:58:44 -0200, John Posner <jjpos...@snet.net>
escribió:
m,n = [1,2,3],[4,5,6]
m[:],n[:] = n,m
I believe this is an RTFM situation. In the Python 2.6.1 help topic
"Simple Statements" > "Assignment Statements", see this para:
Yes, the other relevant paragraph is:
"""An assignment statement evaluates the expression list (remember that
this can be a single expression or a comma-separated list, the latter
yielding a tuple) and assigns the single resulting object to each of the
target lists, from left to right."""
Note that the RHS is evaluated COMPLETELY before assignment to the LHS
begins. The assignment:
a, b = c, d
is NOT equivalent to:
a = c
b = d
except in simple cases.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
