[Tutor] Problems changing a list item in place ?
Mon, 11 Feb 2002 11:56:54 -0500
I have a program with a two-dimensional list called map. After it has already been populated, I want to do this:
map[y_box][x_box] = selected_tile
But I get this error:
File "map_edit.py", line 270, in main
map[y_box][x_box] = selected_tile # Change value of the tile
TypeError: object doesn't support item assignment
y_box and x_box are indexes; the statement "print map[y_box][x_box]" works fine. selected_tile is just an integer, though it shouldn't matter.
I thought you could change list items in-place by assignment. Are multi-dimensional lists different?
Thanks in advance,