[Debugger] float variable equal to math.inf displayed as NaN

[pierre-haessig]

Description

In JupyterLab Debugger, when debugging a code with a float variable having infinity value (i.e. from math.inf, numpy.inf or float('inf')), the variable is displayed as NaN in the Variables panel, see screenshot:

Reproduce

Create new notebook in JupyterLab using a Python kernel ("classical" kernel, not xeus-python which I didn't tested.

Add cell with code:

import math
a = math.inf
b = -a
print(a)

Run the cell and enable JupyterLab debugger → see the Variables panel.

Expected behavior

Variables having a +inf or -inf value should be displayed as such.

Context

• Operating System and version: Linux Ubuntu 22.04
• Browser and version: tested with
  • Firefox 118.0.2 (64 bits)
  • Chromium Version 118.0.5993.70 (Build officiel) snap (64 bits)
• JupyterLab version: 4.0.6

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[andrewfulton9]

I was able to reproduce this as well.

[pierre-haessig]

is it easy to fix? I have no experience with JLab's codebase. Is it a problem in Javascript?

[ashna1jain]

Hey can someone assign this issue to me? I have fixed this. @pierre-haessig