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```hosts = ['<http://vlab-esx-80.vballin.com|vlab-esx-80.vballin.com>','<http://vlab-esx-90.vballin.com|vlab-esx-90.vballin.com>','<http://vlab-esx-100.vballin.com|vlab-esx-100.vballin.com>','<http://vlab-esx-110.vballin.com|vlab-esx-110.vballin.com>','<http://vlab-esx-120.vballin.com|vlab-esx-120.vballin.com>','<http://vlab-esx-130.vballin.com|vlab-esx-130.vballin.com>','<http://vlab-esx-140.vballin.com|vlab-esx-140.vballin.com>','<http://vlab-esx-150.vballin.com|vlab-esx-150.vballin.com>']

host_thumb_list = []
def get_host_thumbprint():
    for h in hosts:
        thumbprint = vsphere.get_host_thumbprint(address=h, insecure=True)
        host_thumb_list.append(thumbprint)
    return
get_host_thumbprint()```

How are you using the values in `host_thumb_list`?

These will be instances of `GetHostThumbprintResult`. If you want the list to be of the actual thumbprint values, I think you’ll need to do something like:

```host_thumb_list.append(thumbprint.id)```

Thank you <@UB9EMC6TY> that was exactly it!