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# general
s
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p
it looks like a python error - you can get it when you want to use object like a dict, that is instead of 
obj.a
, you try to use 
obj["a"]
let me try to repro it locally, maybe docs are not up-to-date
It works for me on: • Python 3.8.5 • Pulumi 3.22.1 • pulumi-kubernetes==3.14.1
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import pulumi
import pulumi_kubernetes as k8s

# Create resources from standard Kubernetes guestbook YAML example.
def make_frontend_public(obj):
    if obj['kind'] == "Service" and obj['metadata']['name'] == "frontend":
        obj['spec']['type'] = "LoadBalancer"

guestbook = k8s.yaml.ConfigFile('guestbook', 'guestbook-all-in-one.yaml', transformations=[make_frontend_public])
(it’s copy’n’paste example from the docs)
@bored-barista-23480 can you paste your environment setup here? Things like: • python version
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python --version
• pulumi cli version
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pulumi version
• python modules
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(within venv) pip freeze | grep pulumi
You can also try to upgrade the dependencies first and see if that resolves the issue.
b
Python: 
3.8.10
Pulumi: 
3.22.1
Modules:
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pulumi==3.22.1
pulumi-aws==4.35.0
pulumi-eks==0.36.0
pulumi-kubernetes==3.14.1
Obviously I am trying to use the subscript functionality. But that's how it is used in the example as well. I think I even used it like that before. That's why I'm irritated.
p
(yeah, just to be clear, I successfully run the code above that uses subscription as well)
what’s weird, you’ve got the same versions as I have (except python but that shouldn’t cause such an issue)
oh wait… I think I know that might be wrong (let me check, it’s just a guess)
@bored-barista-23480 make sure you’re passing 
transformations
as 
ConfigMap
field and not using generic resource transformations available through 
opts
and `pulumi.ResourceOptions`: WORKING EXAMPLE
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guestbook = k8s.yaml.ConfigFile(
  'guestbook',
  'guestbook-all-in-one.yaml', 
  transformations=[make_frontend_public],
)
ERROR
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guestbook = k8s.yaml.ConfigFile(
  'guestbook',
  'guestbook-all-in-one.yaml', 
  opts=pulumi.ResourceOptions(transformations=[make_frontend_public]),
)
b
Ah! Yes, that solves the issue! I just missed that little difference. Thank you very much! 🙂
🙌 1
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