unable to list of jobs via python script

Hello community out there,

A newbie to streamsets world.
I am looking for automatic solution means via python script with pipeline, which exports all jobs, all pipelines by calling  StreamSets Control hub.

so I am in very initial stage of my script just for testing, to connect with Control hub and list of jobs.

script: streamsets_connection.py

import os
import sys
from streamsets.sdk import ControlHub

# Get environment variables
server_url = os.getenv('SDC_SERVER_URL')
credential_id = os.getenv('SDC_CREDENTIAL_ID')
token = os.getenv('SDC_TOKEN_ID')

# Validate environment variables
if not server_url or not credential_id or not token:
    print("One or more environment variables are not set.")
    exit(1)

# Connect to ControlHub
try:
    control_hub = ControlHub(server_url=server_url, credential_id=credential_id, token=token)
    print("ControlHub client initialized successfully.")
except Exception as e:
    print(f"Failed to initialize ControlHub client: {e}")
    exit(1)

def list_jobs():
    try:
        # Fetch all jobs
        jobs = control_hub.jobs.get_all()
        print("List of jobs:")
        if not jobs:
            print("No jobs found.")
        else:
            for job in jobs:
                print(f"Job ID: {job.job_id}, Name: {job.job_name}")
    except Exception as e:
        print(f"An error occurred while listing jobs: {e}")

if __name__ == '__main__':
    print("Starting job listing script...")
    list_jobs()
    print("Finished job listing script.")

output:

streamsets_connection.py
ControlHub client initialized successfully.
 

I am unable to list of jobs, any one guide me here why its not listing the jobs.

final goal is to have a script which can export all pipelines and all jobs. 

Thanks in advance.