Pydantic 2.0 Released

[raratiru]

A new major release of pydantic is published.

There is a migration guide too:

https://docs.pydantic.dev/latest/migration/

Will there be an upgrade or will pull requests be accepted?

[westurner]

• [ ] bump-pydantic auto-upgrades some pydantic v1 code to pydantic v2

  • https://github.com/pydantic/bump-pydantic#bp004-replace-imports

    pip install bump-pydantic
    bump-pydantic pydantic_schemaorg/
    bump-pydantic src/

• [ ] sed-replace pydantic imports

  • things could be upgraded one at a time if necessary; just remove the .v1 when the tests pass
  • this should work with pydantic v1 >= v1.10.17 and v2 https://docs.pydantic.dev/latest/migration/#using-pydantic-v1-features-in-a-v1v2-environment :

  The Pydantic V2 package also continues to provide access to the Pydantic V1 API by importing through pydantic.v1.

  For example, you can use the BaseModel class from Pydantic V1 instead of the Pydantic V2 pydantic.BaseModel class:

  from pydantic.v1 import BaseModel

  git status; # git stash || git commit -a -m
  sed -i -e 's/pydantic.BaseModel/pydantic.v1.BaseModel/g' \
       -e 's/pydantic.fields/pydantic.v1.fields/g' \
       -e 's/from pydantic import fields/from pydantic.v1 import fields/g' \
       -e 's/from pydantic import BaseModel/from pydantic.v1 import BaseModel/g'
  git diff
  grep -rni BaseModel
  grep -rni 'from pydantic import' | grep -E 'BaseModel|fields'
  grep -rni 'from pydantic import' | grep -E  'validators'

• pydantic v1 -> v2 migration guide: https://docs.pydantic.dev/latest/migration/