"pytype.pytd.visitors.ContainerError: Conflicting values for TypeVar" when parsing SQLAlchemy stubs created by stubgen

[rchen152]

See python/typeshed#6585. There are two problems:

• pytype chokes on from ... import X thanks to

  pytype/pytype/pyi/parser.py

  Line 61 in 002b88c

  return {1: "__PACKAGE__", 2: "__PARENT__"}[level]

  .
• nested class issues: python/typeshed@c1fe447

[rchen152]

Update: we're also getting some odd error in involving sqlalchemy.types (#1240):

Couldn't import pyi for 'sqlalchemy.dialects.postgresql' [pyi-error] Can't find pyi for 'sqltypes.ARRAY', referenced from 'sqlalchemy.dialects.postgresql.array'

The sqlalchemy.dialects.postgresql.array stub contains:

import sqlalchemy.types as sqltypes
[...]
class ARRAY(sqltypes.ARRAY): ...

which is what I assume pytype is unhappy about. When I try running pytype over all the sqlalchemy stubs, I see lots of errors like this involving various sqlalchemy.types attributes.

[rchen152]

Most of the pytype errors in the SQLAlchemy stubs have been fixed; two files are still on the exclude list due to a "conflicting values for TypeVar" error: https://github.com/python/typeshed/blob/2ec6ba979f98c3c49d3a7ac2b11f1b3459e8e95a/tests/pytype_exclude_list.txt#L18-L19.

[h-joo]

Hi, thank you for your report. Google is shifting its effort to a different approach for type checking apart from pytype, and we're not planning to put in any effort in the near future in pytype, so we'll close this issue. Please see the announcement here.