On 22 Apr 2005 14:41:45 -0700, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > I was thinking about something like the following; > > >>> a=[ t**n for n in range(4) ] > Traceback (most recent call last): > File "<stdin>", line 1, in ? > NameError: name 't' is not defined > >>> > > or > > >>> a=[ lambda t: t**n for n in range(4) ] > >>> t=2 > >>> a > [<function <lambda> at 0x403dcc6c>, <function <lambda> at 0x403dcca4>, > <function <lambda> at 0x403dccdc>, <function <lambda> at 0x403dcd14>] > >>> t=3 > >>> a > [<function <lambda> at 0x403dcc6c>, <function <lambda> at 0x403dcca4>, > <function <lambda> at 0x403dccdc>, <function <lambda> at 0x403dcd14>] > >>> >
Well, everybody else took away your lambda (greedy people!) but I'm here to say that it doesn't *have* to go away. I didn't think this would be possible, but it is: >>> t = 2 >>> [(lambda n: t**n)(n) for n in range(4)] [1, 2, 4, 8] >>> t = 3 >>> [(lambda n: t**n)(n) for n in range(4)] [1, 3, 9, 27] I just thought that was kinda neat. If you wanted to obfuscate some python, this would be an awesome trick - hide the value of t somewhere early in the function then pull a variation of this out later. Peace Bill Mill bill.mill at gmail.com -- http://mail.python.org/mailman/listinfo/python-list
