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internal server error - dmypy daemon crashed #18396

@arthurbrenno

Description

@arthurbrenno

Bug Report

./src/intellibricks/models/supervised/engines.py: 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: 1.14.1
Daemon crashed!
Traceback (most recent call last):
File "mypy/dmypy_server.py", line 236, in serve
File "mypy/dmypy_server.py", line 285, in run_command
File "mypy/dmypy_server.py", line 353, in cmd_run
File "mypy/dmypy_server.py", line 432, in check
File "mypy/dmypy_server.py", line 700, in fine_grained_increment_follow_imports
File "mypy/server/update.py", line 285, in update
File "mypy/server/update.py", line 881, in propagate_changes_using_dependencies
File "mypy/server/update.py", line 1010, in reprocess_nodes
File "mypy/semanal_main.py", line 137, in semantic_analysis_for_targets
File "mypy/semanal_main.py", line 220, in process_top_levels
File "mypy/semanal_main.py", line 351, in semantic_analyze_target
File "mypy/semanal.py", line 646, in refresh_partial
File "mypy/semanal.py", line 657, in refresh_top_level
File "mypy/semanal.py", line 7288, in accept
File "mypy/errors.py", line 1288, in report_internal_error
File "mypy/semanal.py", line 7286, in accept
File "mypy/nodes.py", line 471, in accept
File "mypy/semanal.py", line 2958, in visit_import_from
File "mypy/semanal.py", line 3054, in report_missing_module_attribute
File "mypy/semanal.py", line 7267, in fail
File "mypy/errors.py", line 463, in report
File "mypy/errors.py", line 529, in add_error_info
File "mypy/errors.py", line 466, in _add_error_info
AssertionError

[35] Error running mypy in /Users/arthurbrenno/Documents/Dev/Public/ctx/intellibricks: the mypy daemon crashed. This is probably a bug in mypy itself, see Output panel for details. The daemon will be restarted automatically.

To Reproduce

uv python install 3.13.1
uv python pin 3.13.1
uv venv
source .venv/bin/activate
uv add mypy --dev
dmypy start
x: str = 2
y: int = "3"
# ERROR

Your Environment

  • Mypy version used: 1.14.1
  • Mypy command-line flags: uv run dmypy start
  • Mypy configuration options from mypy.ini (and other config files):
  • Python version used: 3.13.1

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