[Numpy-discussion] lists of zeros and ones

Hello, i would like to produce lists of lists 1's and 0's. For example, to produce the list composed of: L = [[1,0,0,0],[0,1,0,0],[0,0,1,0],[0,0,0,1]] I just need to do the following: n=4 numpy.eye(n,dtype=int).tolist() I would like to know a simple way to generate a list containing all the lists having two 1's at each element. Example, n = 4 L2 = [[1,1,0,0],[1,0,1,0],[1,0,0,1],[0,1,1,0],[0,1,0,1],[0,0,1,1]] Any ideas? Thanks. -- View this message in context: http://old.nabble.com/lists-of-zeros-and-ones-tp27950978p27950978.html Sent from the Numpy-discussion mailing list archive at Nabble.com.