# How to set vars with python in ansible inventory? **URL:** \ **Category:** Ansible Project\ **Created:** [March 5, 2015, 3:02pm UTC](https://forum.ansible.com/t/how-to-set-vars-with-python-in-ansible-inventory/17677 "2015-03-05T15:02:03Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Valeriy\_Solovyov](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@Valeriy\_Solovyov](https://forum.ansible.com/u/Valeriy_Solovyov)\ **Post date:** [March 5, 2015, 3:02pm UTC](https://forum.ansible.com/t/how-to-set-vars-with-python-in-ansible-inventory/17677/1 "2015-03-05T15:02:03Z")
Hello, In playbook I’m using variable {{excluded\_service}}. I want to run ansible playbook from python and provide this variable. I can’t use external inventory script to provide this variable. (There is one workaround: generate json/Pickle and restore it inside dynamic inventory script). I am creating an inventory: ```auto hosts = ["127.0.0.1"] inventory=ansible.inventory.Inventory(hosts) ``` but I don’t understand where I can add value of variable? I am noob to python. I tried to read code and found answer but I failed. For me [Inventory class](https://github.com/ansible/ansible/blob/devel/lib/ansible/inventory/ __init__.py) hasn’t ability to add variable. My code, that works with external inventory script. Please help me increase my programming level. If there are some issues, or…please write me. (Sorry for my English) ```auto import sys import os import stat import json import ansible.playbook import ansible.constants as C import ansible.utils.template from ansible import errors from ansible import callbacks from ansible import utils from ansible.color import ANSIBLE_COLOR, stringc from ansible.callbacks import display playbook="/opt/RDE/3p/ansible/loop/testloop.yml" inventory="/opt/RDE/3p/ansible/loop/lxc.py" connection="local" timeout=10 subset=None options={'subset': None, 'ask_pass': False, 'sudo': False, 'private_key_file': None, 'syntax': None, 'skip_tags': None, 'diff': False, 'check': False, 'remote_user': 'root', 'listtasks': None, 'inventory': '/opt/RDE/3p/ansible/loop/lxc.py', 'forks': 5, 'listhosts': None, 'start_at': None, 'tags': 'all', 'step': None, 'sudo_user': None, 'ask_sudo_pass': False, 'extra_vars': [], 'connection': 'smart', 'timeout': 10, 'module_path': None} sshpass = None sudopass = None extra_vars = {} def colorize(lead, num, color): """ Print 'lead' = 'num' in 'color' """ if num != 0 and ANSIBLE_COLOR and color is not None: return "%s%s%-15s" % (stringc(lead, color), stringc("=", color), stringc(str(num), color)) else: return "%s=%-4s" % (lead, str(num)) def hostcolor(host, stats, color=True): if ANSIBLE_COLOR and color: if stats['failures'] != 0 or stats['unreachable'] != 0: return "%-37s" % stringc(host, 'red') elif stats['changed'] != 0: return "%-37s" % stringc(host, 'yellow') else: return "%-37s" % stringc(host, 'green') return "%-26s" % host inventory = ansible.inventory.Inventory(options['inventory']) hosts = ["127.0.0.1"] #inventory=ansible.inventory.Inventory(hosts) inventory.subset(options['subset']) if len(inventory.list_hosts()) == 0: raise errors.AnsibleError("provided hosts list is empty") inventory.set_playbook_basedir(os.path.dirname(playbook)) stats = callbacks.AggregateStats() playbook_cb = callbacks.PlaybookCallbacks(verbose=utils.VERBOSITY) if options['step']: playbook_cb.step = options['step'] if options['start_at']: playbook_cb.start_at = options['start_at'] runner_cb = callbacks.PlaybookRunnerCallbacks(stats, verbose=utils.VERBOSITY) pb = ansible.playbook.PlayBook( playbook=playbook, module_path=None, inventory=inventory, forks=options['forks'], remote_user=options['remote_user'], remote_pass=sshpass, callbacks=playbook_cb, runner_callbacks=runner_cb, stats=stats, timeout=options['timeout'], transport=options['connection'], sudo=options['sudo'], sudo_user=options['sudo_user'], extra_vars=extra_vars, private_key_file=options['private_key_file'], check=options['check'], diff=options['diff'] ) playnum = 0 failed_hosts = [] unreachable_hosts = [] try: print pb.run() hosts = sorted(pb.stats.processed.keys()) print hosts display(callbacks.banner("PLAY RECAP")) playbook_cb.on_stats(pb.stats) for h in hosts: t = pb.stats.summarize(h) if t['failures'] > 0: failed_hosts.append(h) if t['unreachable'] > 0: unreachable_hosts.append(h) retries = failed_hosts + unreachable_hosts if len(retries) > 0: filename = pb.generate_retry_inventory(retries) if filename: display(" to retry, use: --limit @%s\n" % filename) for h in hosts: t = pb.stats.summarize(h) display("%s : %s %s %s %s" % ( hostcolor(h, t), colorize('ok', t['ok'], 'green'), colorize('changed', t['changed'], 'yellow'), colorize('unreachable', t['unreachable'], 'red'), colorize('failed', t['failures'], 'red')), screen_only=True ) display("%s : %s %s %s %s" % ( hostcolor(h, t, False), colorize('ok', t['ok'], None), colorize('changed', t['changed'], None), colorize('unreachable', t['unreachable'], None), colorize('failed', t['failures'], None)), log_only=True ) except Exception as e: print ("!!!!!!!ERROR: %s" % e) ``` ---
**Author:** ![sivel](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/sivel/32/1198_2.png) [@sivel](https://forum.ansible.com/u/sivel)\ **Post date:** [March 5, 2015, 3:22pm UTC](https://forum.ansible.com/t/how-to-set-vars-with-python-in-ansible-inventory/17677/2 "2015-03-05T15:22:35Z")
You probably want to create an ansible.inventory.host.Host instance, and do an inventory.add\_host using the Host instance. A Host instance can have vars associated with it. ---
**Author:** ![sivel](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/sivel/32/1198_2.png) [@sivel](https://forum.ansible.com/u/sivel)\ **Post date:** [March 5, 2015, 3:22pm UTC](https://forum.ansible.com/t/how-to-set-vars-with-python-in-ansible-inventory/17677/3 "2015-03-05T15:22:58Z")
BTW, for future reference, this is also a better topic for ansible-devel, instead of ansible-project.