jayceslesar commented on issue #2160:
URL:
https://github.com/apache/iceberg-python/issues/2160#issuecomment-3016761060
Nice, yeah looks like we can do something like
```py
from typing import Any, Literal
from pydantic import BaseModel, Field, field_validator
class MyModel(BaseModel):
my_literal: Literal[1] = Field(alias="my-literal")
@field_validator("my_literal", mode="before")
def validate_my_literal(cls, v: Any) -> int:
"""Validate that my_literal is 1 for MyModel."""
if v != 1:
raise ValueError(f"MyModel requires my-literal to be 1, got {v}")
return v
MyModel(**{"my-literal": 2})
```
Which raises
```
pydantic_core._pydantic_core.ValidationError: 1 validation error for MyModel
my-literal
Value error, MyModel requires my-literal to be 1, got 2 [type=value_error,
input_value=2, input_type=int]
For further information visit
https://errors.pydantic.dev/2.11/v/value_error
```
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