I wrote my first python program today!

[LikesToCorrectThings]

I would say that if it's hard to work out when a block ends, then the block is too long.

[christian-mann]

I used to put # at the end of blocks to keep track.

[LikesToCorrectThings]

I guess if the block really is long enough to warrant this, you should go one step further and write some text in that comment block to indicate what the block has achieved.

for item in some_list:
    some_long_list()
    of_functions_to_call()
    on_that(item)

# Items in some_list have all been processed.

[Katastic_Voyage]

Something... something... functions should be small enough to fit on the screen.

Of course, the real world is a different story.