how to validate keys with whitespaces in pydantic

Question

I have a json key with whitespace in it:

My_dict = {"my key": 1}

I want to create a Model to model it:

from pydantic import BaseModel
class MyModel(BaseModel):
    mykey: int
    # my key isn't a legit variable name
    # my_key is, but like mykey - it doesn't catch the correct key from the json

MyModel(**my_dict)

This doesn't work.

I tried playing with the BaseModel.Config , but didn't get anywhere. Didn't see anything on the docs as well.

Is this possible?

I can use a workaround: Go over the json , replace all key's whitespaces into underscores, and then use pydantic but I would love to not use this...

Answer 1

Yes, it's possible by using Field's aliases:

from pydantic import BaseModel, Field


class MyModel(BaseModel):
    mykey: int = Field(alias='my key')


My_dict = {"my key": 1}
print(MyModel(**My_dict))