# Typehinting a list of integers
**URL:** https://forum.makecode.com/t/typehinting-a-list-of-integers/7080
**Category:** micro:bit
**Created:** [March 29, 2021, 2:38pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080 "2021-03-29T14:38:01Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@dog](https://forum.makecode.com/u/dog)
#### Post date: [March 29, 2021, 2:38pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/1 "2021-03-29T14:38:01Z")
I have recently discovered that the microbit makecode editor requires to know the type of list before runtime. I have been using typehints to achieve this like so:
enemies: List[game.LedSprite] = []
however when trying to make a list of integers I could not get it to work
I have tried all of these:
purge: List[int] = []
purge: List[Number] = []
purge: List[Integer] = []
yet none of these work!
In order to make this work I need to use a really jank solution:
purge = [0]
purge.remove\_at(0)
Surely there must be a way to do this with typehints, if you know please let me know.
---
### Author:  [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)
#### Post date: [March 29, 2021, 3:37pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/2 "2021-03-29T15:37:12Z")
It’s `number`, not `Number`. That always bites me in the behind 😅
---
### Author:  [@dog](https://forum.makecode.com/u/dog)
#### Post date: [March 30, 2021, 3:22pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/3 "2021-03-30T15:22:05Z")
---
### Author:  [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)
#### Post date: [March 30, 2021, 4:19pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/4 "2021-03-30T16:19:16Z")
What about this:
```typescript
let test: number[] = [];
```
You can also do this, but then it starts to look like C++: 🤔
```typescript
let test: Array = [];
```
---
### Author:  [@dog](https://forum.makecode.com/u/dog)
#### Post date: [March 30, 2021, 9:05pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/5 "2021-03-30T21:05:59Z")
I’m using python and that doesn’t work.
---
### Author:  [@dog](https://forum.makecode.com/u/dog)
#### Post date: [March 30, 2021, 9:06pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/6 "2021-03-30T21:06:27Z")
> [@UnsignedArduino](#):
>
> `let test: Array = [];`
Okay so strangely in a new project this works:
However when I try and use the exact same code in my project where I need this I get this three errors, “Unused label”, “‘number’ only refers to a type, but is being used as a value here” and “Expression expected.”
And now I think I found the problem, for some reason when you put it in a loop or maybe its just when you indent it these errors appear, but when not indented it works fine, very confusing.
---
### Author:  [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)
#### Post date: [March 30, 2021, 10:33pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/7 "2021-03-30T22:33:17Z")
👀 You are using Python???
Sorry for all the confusion, what I said is for TypeScript. For Python, it’s:
```auto
purge: list[int] = []
```
And `float` if you are using decimals.
---
### Author:  [@dog](https://forum.makecode.com/u/dog)
#### Post date: [March 31, 2021, 3:10am UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/8 "2021-03-31T03:10:02Z")
This doesn’t work either…
and I already tried using List[int] as said in the initial post.
---
### Author:  [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)
#### Post date: [March 31, 2021, 3:48pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/9 "2021-03-31T15:48:17Z")
> [@dog](#):
>
> …and I already tried using List[int] as said in the initial post.
`List` and `list` are 2 different things! 😉
I’ve ran out of ideas - Python is still in beta so I would report a bug issue [here](https://github.com/microsoft/pxt-arcade/issues).
---
### Author:  [@dog](https://forum.makecode.com/u/dog)
#### Post date: [March 31, 2021, 9:00pm UTC](https://forum.makecode.com/t/typehinting-a-list-of-integers/7080/10 "2021-03-31T21:00:33Z")
> [@UnsignedArduino](#):
>
> `List` and `list` are 2 different things! 😉
Yeah I know, **list** is the builtin python type but **List** is for typehinting.
> [@UnsignedArduino](#):
>
> I’ve ran out of ideas - Python is still in beta so I would report a bug issue [here](https://github.com/microsoft/pxt-arcade/issues).
Okay thank you!