After a script runs 50 times I want to add a different keystroke to the script, how do I code that?

I'm not looking to exclude the

type("T")

at any time, but having continued reading a little more, and then reading what you suggested, I think I can explain what I'm looking to do a little better. I guess 'n' in the first line is what number in the range I'm on, and then at 100 it will stop, is that correct? in the game it won't get through 100 cycles because the item the player uses stops working at 75, so I think reading your if/elif/else code I should increase my range to 300 and use something like

if n <= 75:
          type("1")
elif n > 76 and n < 150:
          type("2")
elif n > 151 and n < 225:
          type("3")
else
          type("4")
          type("T")

pressing 1-4 changes a hotkey to interchangeably switch out the items used, and they're all duplicates so reading the suggestion you're given me makes me assume that during the first 75 cycles it will use the item the player has equiped, then by pressing 1-4 during the cycles between 76-300 it will attempt to equip whatever item is on the players hotbar (no negative side effects if it is already equipped). Pressing "T" opens a window so it can't be moved or switched.

with regards to the spacing / tab issue, I don't understand the why behind what you're saying, but I can certainly understand the "you should use tab instead of 8 blanks" portion, and I'll change that too.

Sorry, but it is always a problem to "guess" what might be the behavior of the target application.

At least I think you got it with the use of if/elif/else.

--- with regards to the spacing / tab issue, I don't understand the why behind what you're saying
the why: within one block (e.g. within an if, an else, a while loop, a for loop, ...) the indent must be consistent:
if you indent with 8 blanks, it must be 8 blanks throughout the block.
This might be transparent for one level, but when it comes to a second, third, n-th level (if's within if's within for's ...) it gets non-transparent and these errors are really hard to find.

Therefor from the beginning: use tab/shift-tab.

Tip: If you run into problems. that might be based on indentation errors, select the lines, that might be the cause, use shift-tab until the indent is 0 and tab again to the right indent level.

--- one more thing:
instead of using a for loop or as an additional support, you might think about checking for some other visual objects (exists or observe), that may give you the information, that the status of your app changed.

for n in range(375):
    if n <= 74:
        type("1")
    elif n > 74 and n < 150:
        type("2")
    elif n >149 and n < 225:
        type("X")
    elif n >224 and n <300:
        type("4")
    else:
        type("5")
    wait(3)
    type("T")
    find(<image>)
    click(<image>)
    type(Key.ESC)
    hover(<second image>)
    wait(20)
    rightClick(<third image>)
    wait(6)

trying this now, if it works, then I'm going to to amend it one more time and try the following,

if n = 75:
    type("1")
if n = 150
    type("2")

etc..., so that it only attempts to press the 1 hotkey one time instead of every cycle between the ranges 1-75, or 75-150 and so on.

Thank you for your help Raiman, I appreciate it.

Thanks RaiMan, that solved my question.