pydantic Questions
2
Solved
Using pydantic setting management, how can I load env variables on nested setting objects on a main settings class? In the code below, the sub_field env variable field doesn't get loaded. field_one...
2
Solved
from pydantic import BaseModel
class A(BaseModel):
date = ''
class B(A):
person: float
def __init__(self):
self.person = 0
B()
tried to initiate class B but raised error AttributeError: '...
Parcenary asked 25/11, 2022 at 12:39
2
Solved
Consider this code:
from pydantic import BaseModel
class MyModel(BaseModel):
x: int
appc = Celery(...)
@appc.task(bind=True)
def mytask(self):
return [MyModel(x=0)]
res = mytask.delay().get()...
6
I would like to instantiate a typing Union of two classes derived from pydantic.BaseModel directly. However I get a TypeError: Cannot instantiate typing.Union.
All examples I have seen declare Unio...
Zitella asked 7/1, 2020 at 17:27
4
How to convert string to model type in FastAPI?
If I have Student model and want to convert string student to type model. How to convert it?
engine = create_engine(SQLALCHAMY_DATABASE_URL,pool_pre_...
Agenesis asked 30/5, 2023 at 10:33
3
Solved
I have the following pydantic model which contains a result typed as Union[int,float] as listed below.
from typing import Union
from pydantic import BaseModel
class Calculation(BaseModel):
arg1...
Hebrews asked 17/12, 2021 at 22:45
4
Solved
I am doing a microservice with a document loader, and the app can't launch at the import level, when trying to import langchain's UnstructuredMarkdownLoader
$ flask --app main run --debug
Traceback...
Crutcher asked 23/5, 2023 at 10:6
4
Solved
Recently I have started to use hydra to manage the configs in my application. I use Structured Configs to create schema for .yaml config files. Structured Configs in Hyda uses dataclasses for type ...
3
Solved
I'm trying to update my code to pydantic v2 and having trouble finding a good way to replicate the custom types I had in version 1. I'll use my custom date type as an example. The original implemen...
Shekinah asked 13/9, 2023 at 22:43
4
Solved
I would like to create automated examples of valid data based on my pydantic models. How can I do this?
Example:
import pydantic
from typing import Any
class ExampleData(pydantic.BaseModel):
a: ...
4
Solved
How can I define a recursive Pydantic model?
Here's an example of what I mean:
from typing import List
from pydantic import BaseModel
class Task(BaseModel):
name: str
subtasks: List[Task] = []
...
Malo asked 22/6, 2021 at 22:43
3
Solved
According to the docs:
allow_mutation
whether or not models are faux-immutable, i.e. whether setattr is allowed (default: True)
Well I have a class :
class MyModel(BaseModel):
field1:int
clas...
2
Solved
I need to create a schema but it has a column called global, and when I try to write this, I got an error.
class User(BaseModel):
id:int
global:bool
I try to use another name, but gives another...
2
Solved
I'm following this tutorial to adapt it to my needs, in this case, to perform a sql module where I need to record the data collected by a webhook from the gitlab issues.
For the database module I'm...
Disenthral asked 22/3, 2022 at 10:38
7
In pydantic is there a cleaner way to exclude multiple fields from the model, something like:
class User(UserBase):
class Config:
exclude = ['user_id', 'some_other_field']
I am aware that fol...
6
Solved
All of sudden langchain_community & langchain packages started throwing error:
TypeError: ForwardRef._evaluate() missing 1 required keyword-only argument: 'recursive_guard'
The error getting ge...
7
Solved
I want to use Arrow type in FastAPI response because I am using it already in SQLAlchemy model (thanks to sqlalchemy_utils).
I prepared a small self-contained example with a minimal FastAPI app. I ...
Nachison asked 25/8, 2021 at 21:57
9
Solved
Is there a straight-forward approach to generate a Pydantic model from a dictionary?
Here is a sample of the data I have.
{
'id': '424c015f-7170-4ac5-8f59-096b83fe5f5806082020',
'contacts': [{
'...
5
Solved
I have a BaseModel like this
from pydantic import BaseModel
class TestModel(BaseModel):
id: int
names: str = None
While I validate some data like this
TestModel(id=123).dict()
I got resul...
Sunroom asked 7/5, 2020 at 3:11
2
Solved
I am using FastAPI to write a web service. It is good and fast.
FastAPI is using pydantic models to validate input and output data, everything is good but when I want to declare a nested model for...
2
Pydantic 2.0 seems to have drastically changed.
Previously with FastAPI and Pydantic 1.X I could define the schema like this, where receipt is optional:
class VerifyReceiptIn(BaseModel):
device_id...
4
Solved
I want to allow users to selectively update fields using PUT calls. On the pydantic model, I have made the fields Optional. In the FastAPI handler if the model attribute is None, then the field was...
2
I'm currently writing a few end points for an API in fastAPI.
I'm defining classes that extend fastapi's HTTPException.
The problem is that HTTPException returns a response body with an attribute c...
4
Solved
I have the following Pydantic model:
from pydantic import BaseModel
import key
class Wallet(BaseModel):
private_key: str = Field(default_factory=key.generate_private_key)
address: str
I want ad...
1
Solved
Let's say I have a Pydantic model with validation:
Name = Annotated[str, AfterValidator(validate_name)]
class Foo(BaseModel):
id: UUID = Field(default_factory=uuid4)
name: Name
And a FastAPI en...
Kbp asked 24/5, 2024 at 9:5
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