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Solving Common Bugs in SQLAlchemy

This series of articles helps you fix common errors (or warnings) you might encounter when interacting with databases through SQLAlchemy. We will diagnose the issues to find the culprits behind them, solving them by modifying code or changing some configuration, and what we should do avoid them in the future.

1 Solving SQLAlchemy TypeError: unhashable type ‘InstrumentedList’

2 Fixing SQLAlchemy Error: Unexpected Results with `and` and `or`

3 Fixing SQLAlchemy AttributeError: Can’t Set Attribute in SQLite

4 Solving the SQLAlchemy Error: BaseQuery Object is Not Callable

5 Solving SQLAlchemy IntegrityError When Inserting Data

6 SQLAlchemy AttributeError: ‘int’ object has no attribute ‘_sa_instance_state’

7 Fixing SQLAlchemy NoSuchModuleError for Postgres

8 Resolving SQLAlchemy OperationalError: No Such Table in SQLite

9 Fixing SQLAlchemy ImportError: No module named MySQLdb

10 Fixing ImportError: No Module Named ‘sqlalchemy’

11 Fixing the ‘OptionEngine’ error in SQLAlchemy

12 Fix SQLAlchemy ImportError for ‘_ColumnEntity’

13 Resolving SQLAlchemy TypeError: init() got multiple values for argument ‘schema’

14 Solving SQLAlchemy ‘InstrumentedList’ Error: ‘filter’ Attribute Issues

15 Fixing SQLalchemy AttributeError: ‘str’ Object Has No Attribute ‘_sa_instance_state’