Add support for re.Pattern

[hramezani]

Change Summary

Add support for re.Pattern

Related issue number

ref #4360
This PR just address the re.pattern

Checklist

• Unit tests for the changes exist
• Tests pass on CI and coverage remains at 100%
• Documentation reflects the changes where applicable
• changes/<pull request or issue id>-<github username>.md file added describing change
  (see changes/README.md for details)
• My PR is ready to review, please add a comment including the phrase "please review" to assign reviewers

[hramezani]

please review

[PrettyWood]

LGTM!

[Bobronium]

This doesn't include changes to schema generation, mentioned in #4360.

pydantic/pydantic/schema.py

Line 805 in 11d8589

if lenient_issubclass(field_type, type_) or field_type is type_ is Pattern:

So generating schema with re.Pattern most likely gonna blow up.

[hramezani]

This doesn't include changes to schema generation, mentioned in #4360.

pydantic/pydantic/schema.py

Line 805 in 11d8589

if lenient_issubclass(field_type, type_) or field_type is type_ is Pattern:

So generating schema with re.Pattern most likely gonna blow up.

I've checked this as well but it seems we don't need it because the lenient_issubclass(field_type, type_) returns True for re.Pattern

[samuelcolvin]

Let's add a test for schema, just to be sure.

Also Please remember "fix #xxx" in the PR body, I won't always remember to update it.

please update.

[hramezani]

Let's add a test for schema, just to be sure.

The test for the schema is part of test_pattern

Also Please remember "fix #xxx" in the PR body, I won't always remember to update it.

I didn't add fix because this PR just add re.Pattern and the issue is about adding re.Pattern and type support. I am going to create another PR for type later. I don't want to close the issue after we merge this one.

[samuelcolvin]

Good point, sorry my mistake.

[hramezani]

please review

[samuelcolvin]

thanks so much.