mypy-summary.md

mypy Error Summary

Files with Most Errors

12 errors - sqlit/ui/mixins/tree.py
10 errors - sqlit/ui/screens/connection.py
 7 errors - sqlit/commands.py
 6 errors - sqlit/db/adapters/ (various)
 4 errors - sqlit/app.py

Error Types

1. no-untyped-def (40 errors)

Functions missing parameter type annotations.

Example:

# Before
def on_button_pressed(event):
    ...

# After
def on_button_pressed(event: Button.Pressed) -> None:
    ...

2. attr-defined (38 errors)

Missing attributes in Protocol or enum issues.

Common ones:

• DatabaseType.MSSQL - enum member access
• Missing Protocol attributes

3. return-value (20 errors)

Wrong return type annotations.

Example:

# Wrong
def cursor(self) -> None:
    return MockCursor()  # Error!

# Fixed
def cursor(self) -> MockCursor:
    return MockCursor()

4. no-any-return (11 errors)

Functions returning Any but declared to return specific type.

Example:

# In adapters
def get_row_count(self, cursor: Any) -> int:
    return cursor.rowcount  # rowcount is Any type

Quick Fixes

Run in Neovim:

1. :Telescope diagnostics - Browse all errors
2. :lua vim.diagnostic.open_float() - Show error under cursor
3. gd - Go to definition
4. K - Show hover info

Full Error List

See: mypy-errors.txt (177 errors across 31 files)