Initial Checks
Description
Pydantic 2.4 seems to require a maximum length for list fields that are filled by generator objects. This wasn't there in Pydantic 2.3.
Traceback (most recent call last):
File "/home/bug/pydantic-bug/bug.py", line 18, in <module>
Bug.model_validate({'values': count(20)})
File "/home/bug/pydantic-bug/venv/lib/python3.10/site-packages/pydantic/main.py", line 503, in model_validate
return cls.__pydantic_validator__.validate_python(
pydantic_core._pydantic_core.ValidationError: 1 validation error for Bug
values
List should have at most 10 items after validation, not 11 [type=too_long, input_value=<generator object count at 0x7f0bb48963b0>, input_type=generator]
For further information visit https://errors.pydantic.dev/2.4/v/too_long
Example Code
from pydantic import BaseModel
class Bug(BaseModel):
values: list[int]
def count(N):
yield from range(N)
Bug.model_validate({'values': list(count(20))})
# works
Bug.model_validate({'values': range(20)})
# works
Bug.model_validate({'values': count(20)})
# ValidationError: List should have at most 10 items after validation, not 11 [type=too_long, input_value=<generator object count at 0x7f0bb48963b0>, input_type=generator]Python, Pydantic & OS Version
pydantic version: 2.4.0
pydantic-core version: 2.10.0
pydantic-core build: profile=release pgo=true
install path: /home/bug/pydantic-bug/venv/lib/python3.10/site-packages/pydantic
python version: 3.10.12 (main, Jun 11 2023, 05:26:28) [GCC 11.4.0]
platform: Linux-5.10.102.1-microsoft-standard-WSL2-x86_64-with-glibc2.35
related packages: typing_extensions-4.8.0
Initial Checks
Description
Pydantic 2.4 seems to require a maximum length for list fields that are filled by generator objects. This wasn't there in Pydantic 2.3.
Example Code
Python, Pydantic & OS Version