# Interact in Jupyterlab vs Jupyter

Hello, Sage community!

I find Jupyterlab to be more comfortable than Jupyter, so I installed it with

```
sage -pip install jupyterlab
```

and I execute it with

```
sage -n jupyterlab
```

Everything work well, except when I try to execute an interact, in which case, no sliders, no selection boxes, etc. appear. However, if I use Jupyter with

```
sage -n jupyter
```

the interact works well.

Here is a minimal working example:

```
@interact
def const(k = slider(-5,5,0.1,1,label='Constant')):
print(k)
```

In this particular case, I obtain in Jupyterlab just `1.00000000000000`

without any controls, nor the possibility to change the value of `k`

.

Can somebody explain why it is not possible to use interacts in Jupyterlab while it is possible in Jupyter?

Thanks for reporting! This is now tracked at

Update: the ticket

was merged in Sage 9.2.beta11.