TypeError: format_type() missing 1 required positional argument: 'options'

[mgdelmonte]

Crash Report

mypy investment_transaction.py --show-traceback bombs with INTERNAL ERROR on line 35. Line 35 of the file is

class InvestmentTransaction(db.Base):

There are dozens of files with this same class inheritance pattern. This particular class (a sqlalchemy model) has both id and type members, but that's not been a problem before.

Traceback

src/moneykit_core/core/models/investment_transaction.py:35: error: INTERNAL ERROR -- Please try using mypy master on GitHub:
https://mypy.readthedocs.io/en/stable/common_issues.html#using-a-development-mypy-build
Please report a bug at https://github.com/python/mypy/issues
version: 1.9.0+dev.91be28552e062601adc2a07075263994c102d5cc
Traceback (most recent call last):
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/bin/mypy", line 8, in <module>
    sys.exit(console_entry())
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/__main__.py", line 15, in console_entry
    main()
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/main.py", line 100, in main
    res, messages, blockers = run_build(sources, options, fscache, t0, stdout, stderr)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/main.py", line 182, in run_build
    res = build.build(sources, options, None, flush_errors, fscache, stdout, stderr)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/build.py", line 191, in build
    result = _build(
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/build.py", line 265, in _build
    graph = dispatch(sources, manager, stdout)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/build.py", line 2943, in dispatch
    process_graph(graph, manager)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/build.py", line 3341, in process_graph
    process_stale_scc(graph, scc, manager)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/build.py", line 3436, in process_stale_scc
    mypy.semanal_main.semantic_analysis_for_scc(graph, scc, manager.errors)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal_main.py", line 93, in semantic_analysis_for_scc
    process_top_levels(graph, scc, patches)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal_main.py", line 220, in process_top_levels
    deferred, incomplete, progress = semantic_analyze_target(
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal_main.py", line 349, in semantic_analyze_target
    analyzer.refresh_partial(
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal.py", line 597, in refresh_partial
    self.refresh_top_level(node)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal.py", line 608, in refresh_top_level
    self.accept(d)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal.py", line 6539, in accept
    node.accept(self)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/nodes.py", line 1142, in accept
    return visitor.visit_class_def(self)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal.py", line 1612, in visit_class_def
    self.analyze_class(defn)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal.py", line 1697, in analyze_class
    self.analyze_class_body_common(defn)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal.py", line 1731, in analyze_class_body_common
    self.apply_class_plugin_hooks(defn)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/mypy/semanal.py", line 1816, in apply_class_plugin_hooks
    hook(ClassDefContext(defn, base_expr, self))
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/plugin.py", line 258, in _base_cls_hook
    decl_class.scan_declarative_assignments_and_apply_types(ctx.cls, ctx.api)
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/decl_class.py", line 96, in scan_declarative_assignments_and_apply_types
    _scan_declarative_assignment_stmt(
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/decl_class.py", line 459, in _scan_declarative_assignment_stmt
    python_type_for_type = infer.infer_type_from_right_hand_nameexpr(
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/infer.py", line 52, in infer_type_from_right_hand_nameexpr
    python_type_for_type = _infer_type_from_decl_column(
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/infer.py", line 410, in _infer_type_from_decl_column
    return _infer_type_from_left_and_inferred_right(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/michael/dev/moneykit/moneykit-api/.venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/infer.py", line 457, in _infer_type_from_left_and_inferred_right
    format_type(orig_left_hand_type),
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: format_type() missing 1 required positional argument: 'options'
src/moneykit_core/core/models/investment_transaction.py:35: : note: use --pdb to drop into pdb

To Reproduce

mypy {that file} generates the error. It bombs on v1.5.1, v.1.7.1, and the latest dev version. I can't share the source file, unfortunately.

My Environment

• Mypy version used: 1.5.1, 1.7.1, and latest mypy 1.9.0+dev.91be28552e062601adc2a07075263994c102d5cc
• sqlalchemy2-stubs version: 0.0.2a37
• Mypy command-line flags: none
• Mypy configuration options from mypy.ini (and other config files): none
• Python version used: 3.11.5
• Operating system and version: MacOS 14.1.2

[zzzeek]

that's a SQLAlchemy mypy-plugin error that was resolved in SQLAlchemy 1.4.49 and 2.0.17. It is specific to using Mypy 1.4 or above. so you want to upgrade to one of those SQLAlchemy versions if you are on mypy 1.4 or greater (which you should be unless this is some very legacy environment).

https://docs.sqlalchemy.org/en/20/changelog/changelog_20.html#change-d6f9f70da3ff5b65b58e06ecdf8570c3