Jupyter Widget tabs has an error

Widgets
1

import ipywidgets as widgets
def fun():
return “1”+“2”
children = [widgets.HTML(fun())]
tab = widgets.Tab()
tab.children = children
tab.titles = [str(i) for i in range(len(children))]
tab

It’s returning only strings for a function.Even integer is considered as a string and its output is 12.
it was suppose to be 3.

2

In pretty much every python implementation i know of, "1" + "2" == "12"… not sure how this is Jupyter-specific.

1 Like
3

import ipywidgets as widgets
def fun():
return 1
children = [widgets.HTML(fun())]
tab = widgets.Tab()
tab.children = children
tab.titles = [str(i) for i in range(len(children))]
tab

I wanted to say this code has to give the output as 1 but it’s throwing an error.

4

here’s the error
“TraitError: The ‘value’ trait of a HTML instance expected a unicode string, not the int 1.”

5

Yep. And every HTML renderer will only render strings, as an HTML file only consists of strings.

It would need to cast the output to a string, e.g.

def do_thing():
    thing = 1 + 2
    return f"{thing}"
1 Like
6

thanks for the solution