[master1]
*hostname*

[master2]
*hostname

192.168.100.21 dc01-control-01
192.168.100.22 dc01-control-02
192.168.100.23 dc01-control-03
192.168.100.31 dc01-worker-01
192.168.100.32 dc01-worker-02

import jinja2
from tempfile import NamedTemporaryFile

def return_hosts():
        hosts = open('./tfhosts','r')
        x = ""
        for line in hosts:
                x = x + str(line.split()[1:]).strip('[]').strip("''") + 'n'
        return [x][0:]

inventory = """
[master1]
{{ host_master01 }}
[master2]
{{ host_master02 }}
"""

gethosts = return_hosts()

inventory_template = jinja2.Template(inventory)

for servers in (gethosts):
        rendered_inventory = inventory_template.render({
                'host_master01': servers[0],
                'host_master02': servers[1],
        })

hosts = NamedTemporaryFile(delete=False)
hosts.write(rendered_inventory)
hosts.close()

[master1]
d
[master2]
c

import jinja2
from tempfile import NamedTemporaryFile

def return_hosts():
    'return a list of host names'
    with open('./tfhosts') as hosts:
        return [host.split()[1].strip() for host in hosts]

inventory = """
[master1]
{{ host_master01 }}
[master2]
{{ host_master02 }}
"""

gethosts = return_hosts()

inventory_template = jinja2.Template(inventory)

rendered_inventory = inventory_template.render({
    'host_master01': gethosts[0],
    'host_master02': gethosts[1],
  })

hosts = NamedTemporaryFile(delete=False)
hosts.write(rendered_inventory)
hosts.close()