On 09/26/12 17:28, 88888 Dihedral wrote: > 88888 Dihedral於 2012年9月27日星期四UTC+8上午6時07分35秒寫道： >>>> In these conditions, how to make this list [[0,0,0],[0,0,0]] with "*" >>>> without this behavior? >>> >>> a = [[0]*3 for i in xrange(2)] >>> >>> a[0][0]=2 >>> >>> a >>> [[2, 0, 0], [0, 0, 0]] > > def zeros(m,n): > a=[] > for i in xrange(m): > a.append([0]*n) > return a > > If one wants to tranlate to C, this is the style.
But this is Python, so why the heck would anybody want to emulate *C* style? It could also be written in an assembly-language style, COBOL style, or a Fortran style...none of which are particularly valuable. Besides, a C-style would allocate a single array of M*N slots and then calculate 2d offsets into that single array. :-P -tkc -- http://mail.python.org/mailman/listinfo/python-list
