def listarraytranspose(L):
return [[row[i] for row in L] for i in range(len(L[<NUM_LIT:0>]))]<EOL>
Tranposes the simple array presentation of a list of lists (of equal length).
Argument:
    L = [row1, row2, ...., rowN]
    where the rowi are python lists of equal length.
Returns:
    LT, a list of python lists such that LT[j][i] = L[i][j].