Spinner does not animate during some external function call.

[digital-idiot]

Description

Spinner does not animate during external function call.

System settings

• Operating System: Linux 5.16.11-2
• Terminal in use: Bash
• Python version: 3.9.6
• Halo version: 0.0.30

Error

There is no error message, just the spinner animation is stuck at initial position the entire time.

Expected behaviour

There spinner should animate normally

Steps to recreate

Below is a sample code to reproduce the error:

import json, pdal
from halo import Halo

rt = [
    {
        "type": "readers.las",
        "filename": "Test.las"
    }
]
p = pdal.Pipeline(json.dumps(rt))

with Halo(text='Loading', spinner='dots'):
    p.execute() # Spinner does not animate during this

People to notify

@manrajgrover