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A comment on Show HN: Pydantic – Data validation using Python 3.6 type hinting. Parent comment

Re:Show HN: Pydantic – Data validation using Python 3.6 type... by zepolen on Saturday June 03, 2017 @10:50PM (#14479666)
Having used both colander and marshmallow extensively - I prefer colander mainly because it has first class explicit handling of null, missing and required values and it's support of nested and inheritance is also much nicer than marshmallow.
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Re:Show HN: Pydantic – Data validation using Python 3.6 type... by Varriount on Sunday June 04, 2017 @06:19PM (#14483946)
I've recently been using good[0] , which also allows for minor data transformation. Looking at Marshmallow, it doesn't seem like it allows inline declaration of nested schemas - each level of the schema needs its own data type.

[0] https://github.com/kolypto/py-good

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