mypy.ini

[mypy]
# Static Typing for Python
# Runs as part of pre-commit
# File info at https://mypy.readthedocs.io/en/stable/config_file.html

# Specifies the Python version used to parse and check the target program.
# python_version = 3.7

# Shows error codes in error messages.
show_error_codes = True

# Suppresses error messages about imports that cannot be resolved.
ignore_missing_imports = True

# Disallows calling functions without type annotations from functions with type annotations.
disallow_untyped_calls = True

# Disallows defining functions without type annotations or with incomplete type annotations.
disallow_untyped_defs = True

# Reports an error whenever a function with type annotations is decorated with a decorator without annotations.
disallow_untyped_decorators = True

# Changes the treatment of arguments with a default value of None by not implicitly making their type Optional.
no_implicit_optional = True

# Warns about casting an expression to its inferred type.
warn_redundant_casts = True

# Warns about unneeded # type: ignore comments.
# Disabled because it behaves differently in GitHub Actions than it does on Windows.
# warn_unused_ignores = True

# Shows a warning when returning a value with type Any from a function declared with a non-Any return type.
# warn_return_any = True

# Shows a warning when encountering any code inferred to be unreachable or redundant after performing type analysis.
warn_unreachable = False

# Use visually nicer output in error messages: use soft word wrap, show source code snippets, and show error location
# markers.
pretty = True

# Use an SQLite database to store the cache.
sqlite_cache = True

# Warns about per-module sections in the config file that do not match any files processed when invoking mypy.
warn_unused_configs = True