find next avaliable proxmox vm id

pve_find-next-id.py

import argparse

from proxmoxer import ProxmoxAPI

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='find next available vm id')
    parser.add_argument('-s', '--server', required=True, help="proxmox host")
    parser.add_argument('-u', '--user', required=True, help="proxmox user name")
    parser.add_argument('-p', '--password', required=True, help="proxmox user password")
    args = parser.parse_args()

    if "@" not in args.user:
        args.user += "@pve"

    proxmox = ProxmoxAPI(args.server, user=args.user, password=args.password, verify_ssl=False)
    vm_ids = [x['vmid'] for x in proxmox.cluster.resources.get(type='vm')]
    vm_ids.sort()

    current_id = vm_ids[0]
    available_id = []
    while True:
        if current_id not in vm_ids:
            available_id.append(str(current_id))
        if current_id == vm_ids[-1]:
            break
        current_id += 1
    print(f'{", ".join(available_id)}, {vm_ids[-1]+1}+')