On Thu, May 24, 2012 at 6:23 PM, SherjilOzair <sherjiloz...@gmail.com> wrote: > def adder(): > s = 0 > def a(x):
Add a "nonlocal s" declaration right here. See http://www.python.org/dev/peps/pep-3104/ > s += x > return sum > return a > > pos, neg = adder(), adder() > for i in range(10): > print pos(i), neg(-2*i) > > This should work, right? Why does it not? Python doesn't have a C-like variable declaration scheme. So without a `global` or `nonlocal` declaration, you can only assign to names which reside in the innermost scope. > Checkout slide no. 37 of a Tour of Go to know inspiration. You mean slide #38 ("And functions are full closures."). > Just wanted to see if python was the same as Go in this regard. Sorry, if I'm > being rude, or anything. I would suggest reading through the Python Language Reference (http://docs.python.org/release/3.1.5/reference/index.html ) prior to asking further questions, as it may well answer them for you. Cheers, Chris -- http://mail.python.org/mailman/listinfo/python-list
