Yury

`backref` relationships raise `has no attribute`

1

For example, the following code fails to validate: ```python from sqlalchemy.orm import backref, relationship from sqlalchemy.sql.schema import Column, ForeignKey from sqlalchemy.sql.sqltypes import Integer from sqlalchemy.ext.declarative import declarative_base Base = declarative_base()...

Repeated migration application

2

HI! I caught an error on the `test_up_down_consistency` when tried to supply custom `before_revision_data` It actually failed inserting data because 'it already exists': ``` E psycopg2.errors.UniqueViolation: duplicate key value violates...

Seems to give wrong answer for matching_blocks()

5

If I use this in python `list(SequenceMatcher(None, 'asfdsffdfd abcd', 'abcr').get_matching_blocks())` I get this result `[(0, 0, 1), (12, 1, 2), (15, 4, 0)]` which is clearly wrong, because the longest...