🔒 how to auto parse properties pydantic

[narrow ice]

im makeing models and i want to auto convert isodate str to datetime and ect how do i do that?

[compact lynx]

@narrow ice

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[shut bobcat]

could uou specify about the etc* stuff?or you might find this helpful https://stackoverflow.com/questions/969285/how-do-i-translate-an-iso-8601-datetime-string-into-a-python-datetime-object

[narrow ice]

i want to define a pydantic field in a way that i dont have to write an init and it would parse my date to datetime

[shut bobcat]

ye you dont have to write an init

[narrow ice]

but originaly its an int or str

class Absence(BaseModel):
    creationTime: datetime = Field(alias="KeszitesDatuma", frozen=True, default=None)

like how do i make this work?

aoriginaly in the json i want to parse thats an isodate str

[shut bobcat]

you can rely on Pydantic’s built-in parsing

[narrow ice]

it sees by default that i want a date and its an x formatted timestamp?

[shut bobcat]

its been long time since i have use but

yes Pydantic handles various date and time formats however, if the input is in a timestamp format (like Unix timestamps — which are seconds or milliseconds since the epoch), Pydantic won't automatically convert that to a datetime.

[narrow ice]

and what about Enum s

[shut bobcat]

i think it also support enum?

[narrow ice]

i also have unix timestamps how do i convert that?

[shut bobcat]

Pydantic will map strings (or integers, if it's an int enum) to enum values directly if the input matches one of the values. But if you need custom logic to convert certain values to specific enum members like converting non-standard values or specific numbers to enum, you can use a custom validator.So i reccom you to search up the internet a bit cause am really not sure sorry :P

[narrow ice]

https://docs.pydantic.dev/latest/concepts/conversion_table/#__tabbed_1_2
how do i make ints be interpeted as minutes for timedelta

[steep inlet]

Looking at my old projects, I have used updated: DT.datetime = Field(strict=False) for that

strict=False makes it bold enough to parse timestamps as datetimes, IIRC
EDIT: wait, I can't read. Obviously it's the opposite and I was disabling some unnecessary conversions. But yeah, just datetime should work.

[narrow ice]

its in the conversion table ye i just found this

but for timedelta

it says interpeted as seconds

but i got minutes how do i do that?

[steep inlet]

For that you'd need to write a custom validator

[narrow ice]

how do i do that?

[steep inlet]

e.g. like this:

class Response(BaseModel):
    duration: timedelta

    @field_validator("duration")
    def dur_as_mins(cls, v):
        v *= 60
        return v

res = Response(duration=5) # Response(duration=datetime.timedelta(seconds=300))

this assumes that the field is always a number; if it can be several types you'd need to check the type in the validator

[narrow ice]

thx

[compact lynx]

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