mirror of
https://github.com/kennethreitz/instructor.git
synced 2026-06-05 22:50:18 +00:00
Jason Liu
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
import instructor
|
|
from pydantic import BaseModel, ValidationError, field_validator
|
|
|
|
instructor.patch()
|
|
|
|
|
|
class UserDetail(BaseModel):
|
|
age: int
|
|
name: str
|
|
|
|
@field_validator("name", mode="before")
|
|
def name_must_contain_space(cls, v):
|
|
"""
|
|
This validator will be called after the default validator,
|
|
and will raise a validation error if the name does not contain a space.
|
|
then it will set the name to be lower case
|
|
"""
|
|
if " " not in v:
|
|
raise ValueError("name be a first and last name separated by a space")
|
|
return v.lower()
|
|
|
|
|
|
# Example 1) Valid input, notice that the name is lowercased
|
|
person = UserDetail(age=29, name="Jason Liu")
|
|
print(person.model_dump_json(indent=2))
|
|
"""
|
|
{
|
|
"age": 29,
|
|
"name": "jason liu"
|
|
}
|
|
"""
|
|
|
|
# Example 2) Invalid input, we'll get a validation error
|
|
# In the future this validation error will be raised by the API and
|
|
# used by the LLM to generate a better response
|
|
try:
|
|
person = UserDetail(age=29, name="Jason")
|
|
except ValidationError as e:
|
|
print(e)
|
|
"""
|
|
1 validation error for UserDetail
|
|
name
|
|
Value error, must contain a space [type=value_error, input_value='Jason', input_type=str]
|
|
For further information visit https://errors.pydantic.dev/2.3/v/value_error
|
|
"""
|