SimpleAnsibleInventory dà errore parsando tests/data/inventories/good.ini

Per riprodurre:

from manager.stores import SimpleAnsibleInventory
inventory = SimpleAnsibleInventory("tests/data/inventories/good.ini")
inventory.load()

risultato:

$ python3 test.py 
Traceback (most recent call last):
  File "test.py", line 3, in <module>
    inventory.load()
  File "/home/enrico/lavori/truelite/fuss/fuss-manager/manager/stores.py", line 632, in load
    self._load_vars()
  File "/home/enrico/lavori/truelite/fuss/fuss-manager/manager/stores.py", line 758, in _load_vars
    self._cycle_hosts(self._load_host_vars)
  File "/home/enrico/lavori/truelite/fuss/fuss-manager/manager/stores.py", line 738, in _cycle_hosts
    if self.inventory['all']['hosts']:
TypeError: string indices must be integers