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List[T] validation is not strict enough

See original GitHub issue

with this kind of model :

class Foo(BaseModel):
    items: List[int]

Foo(items='') does not throw any error. Looking at the code, we do not check the list is a list, but we iterate over it and check the elements. Any empty iterable can be used for List[T]

Issue Analytics

State:
Created 6 years ago
Comments:13 (12 by maintainers)

Top GitHub Comments

1reaction

mgucommented, Oct 23, 2017

For me there is a difference between typing.List and typing.Sequence '123' is a Sequence, not a List

0reactions

Gr1Ncommented, Jun 13, 2018

@samuelcolvin can we close this issue? Fix merged

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