Xie Chao wrote: > 3Q very much! > What I really want to get is a c-style array, a pointer to the > beginning of part of a list (or whatever alike). for example, I want to > mutate part of a list, of course, I can achieve this by passing the pair > list and (begin, end) as parameters. but in some case, this manner > is quite tedious and in efficient (I think so, at least in C-style > language it is so)! > I don't wanna get the '+' operator (which is powerful tool in > scripting language), so I ignore this problem. thank you all the same! > maybe this prolem looks silly, since I've just begun to > study scripting language.
Take a look at numpy, it seems to do what you want: In [2]: from numpy import * In [4]: a=arange(10) In [5]: a Out[5]: array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) In [6]: b=a[3:5] In [7]: b Out[7]: array([3, 4]) In [8]: b[0]=10 In [9]: b Out[9]: array([10, 4]) In [10]: a Out[10]: array([ 0, 1, 2, 10, 4, 5, 6, 7, 8, 9]) http://numpy.scipy.org/ Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
