Code Review?

[metulburr]

if currentl_line[:2]

-- I do not understand the syntax -- what the colon 2 is doing here.   Is that the following _2 items_ need to be in before the 3rd item(position 2) ? or is it those items need to be before _position 2_ ?  what is :2 representi

Its a slice

the : represents its a slice and not getting index [2]
Its more like current_line[X:2:X]  [start:stop:step] but you dont need to specify the beginning index of 0, you just leave it empty.

In this case there is a 2 at stop which means it will get indexes 0 and 1