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# getting-started
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b
cc: @shy-arm-32391 thanks for you blog post, this is really helpful! i am implementing something similar in python and having these typing issues, not sure if you have any idea on this?
p
I think you might be interested in pydantic (https://pydantic-docs.helpmanual.io)
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I use it in most of my python project, including pulumi.
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class Team(BaseModel):
  name: str
  slug: str
  description: str
  parent_team_id: Optional[int]
  subteams: Optional[List["Team"]]

team = Team.parse_obj(your_python_dict)
+ small suggestion (ofc that depends on your usecase), sometimes it’s easier to deal with empty list instead of optional lists:
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subteams: List["Team"] = []
vs
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subteams: Optional[List["Team"]]
Ensure that you really want to have an optional here 🙂.
+ think about joining #CDE799L1M channel on this Slack
b
Just curious. From OP post there is nothing about Pulumi itself and even Python code does not look like resources in Pulumi. Why the question is here?
p
hah, you’re right 😄
I assumed OP wanted to read some structured stack config and needed to find a robust solution in python. At least, that’s where I use pydantic in my pulumi projects.
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b
thanks very much! 
pydantic
solved my problem nicely!!👍
yeah, using empty list makes things easier but dataclass has limitation that you can't assign an mutable empty list to a field. but now i don't worry about it since i switch to use pydantic
hi `sergei`: one key benefit of pulumi is to have proper typing and ide prompt. something that's easy in golang or typescript, may need some extra research/work in python. asking here since i was wondering how other folks workaround in their pulumi project. #CDE799L1M is definitely a good place to ask!
p
@bored-monitor-99026 technically, you can assign empty list to a dataclass field, it’s just not that straightforward (because it’s mutable as you said):
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@dataclass
class Team:
    subteams: List["Team"] = field(default_factory=lambda: [])
    ...
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I’m glad pydantic did the job for you!
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s
hi friends - just got back from holiday and I'm so glad you all found something that works! 🎉
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