Where is the python equivalent of: http://search.cpan.org/~fxn/Algorithm-Combinatorics-0.16/Combinatorics.pm
combinations (with and without repetition) variations (with and without repetition) permutations partitions derangements etc I'm guessing sage has this, but shouldn't something like this be part of the standard library (perhaps in C)? I'd understand if derangements and partitions were excluded, but the standard combinatorics (replacement on/off, repetition on/off) would be quite nice. It would also be helpful to have a general cartesian product function which combined elements from an arbitrary number of lists. It seems that questions for these algorithms occur too frequently. Am I wishing on a star? -- http://mail.python.org/mailman/listinfo/python-list
