| # Useful functions for constructing nets. | |
| def char_range(c1, c2): | |
| """Generates the characters from `c1` to `c2`, exclusive.""" | |
| for c in range(ord(c1), ord(c2)): | |
| yield chr(c) | |
| def net_product(net_list, range_iter): | |
| return [n.format(i) for i in range_iter for n in net_list] |