The mypy configuration file - mypy 1.15.0 documentation (original) (raw)

Mypy is very configurable. This is most useful when introducing typing to an existing codebase. See Using mypy with an existing codebase for concrete advice for that situation.

Mypy supports reading configuration settings from a file. By default, mypy will discover configuration files by walking up the file system (up until the root of a repository or the root of the filesystem). In each directory, it will look for the following configuration files (in this order):

mypy.ini

.mypy.ini

pyproject.toml (containing a [tool.mypy] section)

setup.cfg (containing a [mypy] section)

If no configuration file is found by this method, mypy will then look for configuration files in the following locations (in this order):

$XDG_CONFIG_HOME/mypy/config

~/.config/mypy/config

~/.mypy.ini

The --config-file command-line flag has the highest precedence and must point towards a valid configuration file; otherwise mypy will report an error and exit. Without the command line option, mypy will look for configuration files in the precedence order above.

It is important to understand that there is no merging of configuration files, as it would lead to ambiguity.

Most flags correspond closely to command-line flags but there are some differences in flag names and some flags may take a different value based on the module being processed.

Some flags support user home directory and environment variable expansion. To refer to the user home directory, use ~ at the beginning of the path. To expand environment variables use $VARNAME or ${VARNAME}.

Config file format¶

The configuration file format is the usualini file format. It should contain section names in square brackets and flag settings of the formNAME = VALUE. Comments start with # characters.

A section named [mypy] must be present. This specifies the global flags.
Additional sections named [mypy-PATTERN1,PATTERN2,...] may be present, where PATTERN1, PATTERN2, etc., are comma-separated patterns of fully-qualified module names, with some components optionally replaced by the ‘*’ character (e.g. foo.bar, foo.bar.*, foo.*.baz). These sections specify additional flags that only apply to _modules_whose name matches at least one of the patterns.
A pattern of the form qualified_module_name matches only the named module, while dotted_module_name.* matches dotted_module_name and any submodules (so foo.bar.* would match all of foo.bar,foo.bar.baz, and foo.bar.baz.quux).
Patterns may also be “unstructured” wildcards, in which stars may appear in the middle of a name (e.gsite.*.migrations.*). Stars match zero or more module components (so site.*.migrations.* can match site.migrations).
When options conflict, the precedence order for configuration is:
1. Inline configuration in the source file
2. Sections with concrete module names (foo.bar)
3. Sections with “unstructured” wildcard patterns (foo.*.baz), with sections later in the configuration file overriding sections earlier.
4. Sections with “well-structured” wildcard patterns (foo.bar.*), with more specific overriding more general.
5. Command line options.
6. Top-level configuration file options.

The difference in precedence order between “structured” patterns (by specificity) and “unstructured” patterns (by order in the file) is unfortunate, and is subject to change in future versions.

Note

The warn_unused_configs flag may be useful to debug misspelled section names.

Note

Configuration flags are liable to change between releases.

Per-module and global options¶

Some of the config options may be set either globally (in the [mypy] section) or on a per-module basis (in sections like [mypy-foo.bar]).

If you set an option both globally and for a specific module, the module configuration options take precedence. This lets you set global defaults and override them on a module-by-module basis. If multiple pattern sections match a module, the options from the most specific section are used where they disagree.

Some other options, as specified in their description, may only be set in the global section ([mypy]).

Inverting option values¶

Options that take a boolean value may be inverted by adding no_ to their name or by (when applicable) swapping their prefix fromdisallow to allow (and vice versa).

Example `mypy.ini`¶

Here is an example of a mypy.ini file. To use this config file, place it at the root of your repo and run mypy.

Global options:

[mypy] warn_return_any = True warn_unused_configs = True

Per-module options:

[mypy-mycode.foo.*] disallow_untyped_defs = True

[mypy-mycode.bar] warn_return_any = False

[mypy-somelibrary] ignore_missing_imports = True

This config file specifies two global options in the [mypy] section. These two options will:

Report an error whenever a function returns a value that is inferred to have type Any.
Report any config options that are unused by mypy. (This will help us catch typos when making changes to our config file).

Next, this module specifies three per-module options. The first two options change how mypy type checks code in mycode.foo.* and mycode.bar, which we assume here are two modules that you wrote. The final config option changes how mypy type checks somelibrary, which we assume here is some 3rd party library you’ve installed and are importing. These options will:

Selectively disallow untyped function definitions only within the mycode.foopackage – that is, only for function definitions defined in themycode/foo directory.
Selectively disable the “function is returning any” warnings withinmycode.bar only. This overrides the global default we set earlier.
Suppress any error messages generated when your codebase tries importing the module somelibrary. This is useful if somelibrary is some 3rd party library missing type hints.

Import discovery¶

For more information, see the Import discoverysection of the command line docs.

mypy_path¶

Type:

string

Specifies the paths to use, after trying the paths from MYPYPATH environment variable. Useful if you’d like to keep stubs in your repo, along with the config file. Multiple paths are always separated with a : or , regardless of the platform. User home directory and environment variables will be expanded.

Relative paths are treated relative to the working directory of the mypy command, not the config file. Use the MYPY_CONFIG_FILE_DIR environment variable to refer to paths relative to the config file (e.g. mypy_path = $MYPY_CONFIG_FILE_DIR/src).

This option may only be set in the global section ([mypy]).

Note: On Windows, use UNC paths to avoid using : (e.g. \\127.0.0.1\X$\MyDir where X is the drive letter).

files¶

Type:

comma-separated list of strings

A comma-separated list of paths which should be checked by mypy if none are given on the command line. Supports recursive file globbing using glob, where * (e.g. *.py) matches files in the current directory and **/ (e.g. **/*.py) matches files in any directories below the current one. User home directory and environment variables will be expanded.

This option may only be set in the global section ([mypy]).

modules¶

Type:

comma-separated list of strings

A comma-separated list of packages which should be checked by mypy if none are given on the command line. Mypy will not recursively type check any submodules of the provided module.

This option may only be set in the global section ([mypy]).

packages¶

Type:

comma-separated list of strings

A comma-separated list of packages which should be checked by mypy if none are given on the command line. Mypy will recursively type check any submodules of the provided package. This flag is identical to modules apart from this behavior.

This option may only be set in the global section ([mypy]).

exclude¶

Type:

regular expression

A regular expression that matches file names, directory names and paths which mypy should ignore while recursively discovering files to check. Use forward slashes (/) as directory separators on all platforms.

[mypy] exclude = (?x)( ^one.py$ # files named "one.py" | two.pyi$ # or files ending with "two.pyi" | ^three. # or files starting with "three." )

Crafting a single regular expression that excludes multiple files while remaining human-readable can be a challenge. The above example demonstrates one approach.(?x) enables the VERBOSE flag for the subsequent regular expression, whichignores most whitespace and supports comments. The above is equivalent to: (^one\.py$|two\.pyi$|^three\.).

For more details, see --exclude.

This option may only be set in the global section ([mypy]).

Note

Note that the TOML equivalent differs slightly. It can be either a single string (including a multi-line string) – which is treated as a single regular expression – or an array of such strings. The following TOML examples are equivalent to the above INI example.

Array of strings:

[tool.mypy] exclude = [ "^one\.py$", # TOML's double-quoted strings require escaping backslashes 'two.pyi$', # but TOML's single-quoted strings do not '^three.', ]

A single, multi-line string:

[tool.mypy] exclude = '''(?x)( ^one.py$ # files named "one.py" | two.pyi$ # or files ending with "two.pyi" | ^three. # or files starting with "three." )''' # TOML's single-quoted strings do not require escaping backslashes

See Using a pyproject.toml file.

namespace_packages¶

Type:

boolean

Default:

True

Enables PEP 420 style namespace packages. See the corresponding flag --no-namespace-packagesfor more information.

This option may only be set in the global section ([mypy]).

explicit_package_bases¶

Type:

boolean

Default:

False

This flag tells mypy that top-level packages will be based in either the current directory, or a member of the MYPYPATH environment variable ormypy_path config option. This option is only useful in the absence of __init__.py. See Mapping file paths to modules for details.

This option may only be set in the global section ([mypy]).

ignore_missing_imports¶

Type:

boolean

Default:

False

Suppresses error messages about imports that cannot be resolved.

If this option is used in a per-module section, the module name should match the name of the imported module, not the module containing the import statement.

follow_untyped_imports¶

Type:

boolean

Default:

False

Makes mypy analyze imports from installed packages even if missing apy.typed marker or stubs.

If this option is used in a per-module section, the module name should match the name of the imported module, not the module containing the import statement.

Warning

Note that analyzing all unannotated modules might result in issues when analyzing code not designed to be type checked and may significantly increase how long mypy takes to run.

follow_imports¶

Type:

string

Default:

normal

Directs what to do with imports when the imported module is found as a .py file and not part of the files, modules and packages provided on the command line.

The four possible values are normal, silent, skip anderror. For explanations see the discussion for the--follow-imports command line flag.

Using this option in a per-module section (potentially with a wildcard, as described at the top of this page) is a good way to prevent mypy from checking portions of your code.

If this option is used in a per-module section, the module name should match the name of the imported module, not the module containing the import statement.

follow_imports_for_stubs¶

Type:

boolean

Default:

False

Determines whether to respect the follow_imports setting even for stub (.pyi) files.

Used in conjunction with follow_imports=skip, this can be used to suppress the import of a module from typeshed, replacing it with Any.

Used in conjunction with follow_imports=error, this can be used to make any use of a particular typeshed module an error.

Note

This is not supported by the mypy daemon.

python_executable¶

Type:

string

Specifies the path to the Python executable to inspect to collect a list of available PEP 561 packages. User home directory and environment variables will be expanded. Defaults to the executable used to run mypy.

This option may only be set in the global section ([mypy]).

no_site_packages¶

Type:

boolean

Default:

False

Disables using type information in installed packages (see PEP 561). This will also disable searching for a usable Python executable. This acts the same as --no-site-packages command line flag.

no_silence_site_packages¶

Type:

boolean

Default:

False

Enables reporting error messages generated within installed packages (seePEP 561 for more details on distributing type information). Those error messages are suppressed by default, since you are usually not able to control errors in 3rd party code.

This option may only be set in the global section ([mypy]).

Platform configuration¶

python_version¶

Type:

string

Specifies the Python version used to parse and check the target program. The string should be in the format MAJOR.MINOR – for example 2.7. The default is the version of the Python interpreter used to run mypy.

This option may only be set in the global section ([mypy]).

platform¶

Type:

string

Specifies the OS platform for the target program, for exampledarwin or win32 (meaning OS X or Windows, respectively). The default is the current platform as revealed by Python’ssys.platform variable.

This option may only be set in the global section ([mypy]).

always_true¶

Type:

comma-separated list of strings

Specifies a list of variables that mypy will treat as compile-time constants that are always true.

always_false¶

Type:

comma-separated list of strings

Specifies a list of variables that mypy will treat as compile-time constants that are always false.

Disallow dynamic typing¶

For more information, see the Disallow dynamic typingsection of the command line docs.

disallow_any_unimported¶

Type:

boolean

Default:

False

Disallows usage of types that come from unfollowed imports (anything imported from an unfollowed import is automatically given a type of Any).

disallow_any_expr¶

Type:

boolean

Default:

False

Disallows all expressions in the module that have type Any.

disallow_any_decorated¶

Type:

boolean

Default:

False

Disallows functions that have Any in their signature after decorator transformation.

disallow_any_explicit¶

Type:

boolean

Default:

False

Disallows explicit Any in type positions such as type annotations and generic type parameters.

disallow_any_generics¶

Type:

boolean

Default:

False

Disallows usage of generic types that do not specify explicit type parameters.

disallow_subclassing_any¶

Type:

boolean

Default:

False

Disallows subclassing a value of type Any.

Untyped definitions and calls¶

For more information, see the Untyped definitions and callssection of the command line docs.

disallow_untyped_calls¶

Type:

boolean

Default:

False

Disallows calling functions without type annotations from functions with type annotations. Note that when used in per-module options, it enables/disables this check inside the module(s) specified, not for functions that come from that module(s), for example config like this:

[mypy] disallow_untyped_calls = True

[mypy-some.library.*] disallow_untyped_calls = False

will disable this check inside some.library, not for your code that imports some.library. If you want to selectively disable this check for all your code that imports some.library you should instead useuntyped_calls_exclude, for example:

[mypy] disallow_untyped_calls = True untyped_calls_exclude = some.library

untyped_calls_exclude¶

Type:

comma-separated list of strings

Selectively excludes functions and methods defined in specific packages, modules, and classes from action of disallow_untyped_calls. This also applies to all submodules of packages (i.e. everything inside a given prefix). Note, this option does not support per-file configuration, the exclusions list is defined globally for all your code.

disallow_untyped_defs¶

Type:

boolean

Default:

False

Disallows defining functions without type annotations or with incomplete type annotations (a superset of disallow_incomplete_defs).

For example, it would report an error for def f(a, b) and def f(a: int, b).

disallow_incomplete_defs¶

Type:

boolean

Default:

False

Disallows defining functions with incomplete type annotations, while still allowing entirely unannotated definitions.

For example, it would report an error for def f(a: int, b) but not def f(a, b).

check_untyped_defs¶

Type:

boolean

Default:

False

Type-checks the interior of functions without type annotations.

disallow_untyped_decorators¶

Type:

boolean

Default:

False

Reports an error whenever a function with type annotations is decorated with a decorator without annotations.

None and Optional handling¶

For more information, see the None and Optional handlingsection of the command line docs.

implicit_optional¶

Type:

boolean

Default:

False

Causes mypy to treat parameters with a Nonedefault value as having an implicit optional type (T | None).

Note: This was True by default in mypy versions 0.980 and earlier.

strict_optional¶

Type:

boolean

Default:

True

Effectively disables checking of optional types and None values. With this option, mypy doesn’t generally check the use of None values – it is treated as compatible with every type.

Warning

strict_optional = false is evil. Avoid using it and definitely do not use it without understanding what it does.

Configuring warnings¶

For more information, see the Configuring warningssection of the command line docs.

warn_redundant_casts¶

Type:

boolean

Default:

False

Warns about casting an expression to its inferred type.

This option may only be set in the global section ([mypy]).

warn_unused_ignores¶

Type:

boolean

Default:

False

Warns about unneeded # type: ignore comments.

warn_no_return¶

Type:

boolean

Default:

True

Shows errors for missing return statements on some execution paths.

warn_return_any¶

Type:

boolean

Default:

False

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

warn_unreachable¶

Type:

boolean

Default:

False

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

Suppressing errors¶

Note: these configuration options are available in the config file only. There is no analog available via the command line options.

ignore_errors¶

Type:

boolean

Default:

False

Ignores all non-fatal errors.

Miscellaneous strictness flags¶

For more information, see the Miscellaneous strictness flagssection of the command line docs.

allow_untyped_globals¶

Type:

boolean

Default:

False

Causes mypy to suppress errors caused by not being able to fully infer the types of global and class variables.

allow_redefinition¶

Type:

boolean

Default:

False

Allows variables to be redefined with an arbitrary type, as long as the redefinition is in the same block and nesting level as the original definition. Example where this can be useful:

def process(items: list[str]) -> None: # 'items' has type list[str] items = [item.split() for item in items] # 'items' now has type list[list[str]]

The variable must be used before it can be redefined:

def process(items: list[str]) -> None: items = "mypy" # invalid redefinition to str because the variable hasn't been used yet print(items) items = "100" # valid, items now has type str items = int(items) # valid, items now has type int

local_partial_types¶

Type:

boolean

Default:

False

Disallows inferring variable type for None from two assignments in different scopes. This is always implicitly enabled when using the mypy daemon.

disable_error_code¶

Type:

comma-separated list of strings

Allows disabling one or multiple error codes globally.

enable_error_code¶

Type:

comma-separated list of strings

Allows enabling one or multiple error codes globally.

Note: This option will override disabled error codes from the disable_error_code option.

Type:

boolean

Default:

False

This flag enables additional checks that are technically correct but may be impractical in real code. See mypy --extra-checks for more info.

implicit_reexport¶

Type:

boolean

Default:

True

By default, imported values to a module are treated as exported and mypy allows other modules to import them. When false, mypy will not re-export unless the item is imported using from-as or is included in __all__. Note that mypy treats stub files as if this is always disabled. For example:

This won't re-export the value

from foo import bar

This will re-export it as bar and allow other modules to import it

from foo import bar as bar

This will also re-export bar

from foo import bar all = ['bar']

strict_concatenate¶

Type:

boolean

Default:

False

Make arguments prepended via Concatenate be truly positional-only.

strict_equality¶

Type:

boolean

Default:

False

Prohibit equality checks, identity checks, and container checks between non-overlapping types.

strict_bytes¶

Type:

boolean

Default:

False

Disable treating bytearray and memoryview as subtypes of bytes. This will be enabled by default in mypy 2.0.

strict¶

Type:

boolean

Default:

False

Enable all optional error checking flags. You can see the list of flags enabled by strict mode in the full mypy --helpoutput.

Note: the exact list of flags enabled by strict may change over time.

Configuring error messages¶

For more information, see the Configuring error messagessection of the command line docs.

These options may only be set in the global section ([mypy]).

show_error_context¶

Type:

boolean

Default:

False

Prefixes each error with the relevant context.

show_column_numbers¶

Type:

boolean

Default:

False

Shows column numbers in error messages.

show_error_code_links¶

Type:

boolean

Default:

False

Shows documentation link to corresponding error code.

hide_error_codes¶

Type:

boolean

Default:

False

Hides error codes in error messages. See Error codes for more information.

pretty¶

Type:

boolean

Default:

False

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

color_output¶

Type:

boolean

Default:

True

Shows error messages with color enabled.

error_summary¶

Type:

boolean

Default:

True

Shows a short summary line after error messages.

show_absolute_path¶

Type:

boolean

Default:

False

Show absolute paths to files.

force_uppercase_builtins¶

Type:

boolean

Default:

False

Always use List instead of list in error messages, even on Python 3.9+.

force_union_syntax¶

Type:

boolean

Default:

False

Always use Union[] and Optional[] for union types in error messages (instead of the | operator), even on Python 3.10+.

Incremental mode¶

These options may only be set in the global section ([mypy]).

incremental¶

Type:

boolean

Default:

True

Enables incremental mode.

cache_dir¶

Type:

string

Default:

.mypy_cache

Specifies the location where mypy stores incremental cache info. User home directory and environment variables will be expanded. This setting will be overridden by the MYPY_CACHE_DIR environment variable.

Note that the cache is only read when incremental mode is enabled but is always written to, unless the value is set to /dev/null(UNIX) or nul (Windows).

sqlite_cache¶

Type:

boolean

Default:

False

Use an SQLite database to store the cache.

cache_fine_grained¶

Type:

boolean

Default:

False

Include fine-grained dependency information in the cache for the mypy daemon.

skip_version_check¶

Type:

boolean

Default:

False

Makes mypy use incremental cache data even if it was generated by a different version of mypy. (By default, mypy will perform a version check and regenerate the cache if it was written by older versions of mypy.)

skip_cache_mtime_checks¶

Type:

boolean

Default:

False

Skip cache internal consistency checks based on mtime.

Advanced options¶

These options may only be set in the global section ([mypy]).

plugins¶

Type:

comma-separated list of strings

A comma-separated list of mypy plugins. See Extending mypy using plugins.

pdb¶

Type:

boolean

Default:

False

Invokes pdb on fatal error.

show_traceback¶

Type:

boolean

Default:

False

Shows traceback on fatal error.

raise_exceptions¶

Type:

boolean

Default:

False

Raise exception on fatal error.

custom_typing_module¶

Type:

string

Specifies a custom module to use as a substitute for the typing module.

custom_typeshed_dir¶

Type:

string

This specifies the directory where mypy looks for standard library typeshed stubs, instead of the typeshed that ships with mypy. This is primarily intended to make it easier to test typeshed changes before submitting them upstream, but also allows you to use a forked version of typeshed.

User home directory and environment variables will be expanded.

Note that this doesn’t affect third-party library stubs. To test third-party stubs, for example try MYPYPATH=stubs/six mypy ....

warn_incomplete_stub¶

Type:

boolean

Default:

False

Warns about missing type annotations in typeshed. This is only relevant in combination with disallow_untyped_defs or disallow_incomplete_defs.

Report generation¶

If these options are set, mypy will generate a report in the specified format into the specified directory.

Warning

Generating reports disables incremental mode and can significantly slow down your workflow. It is recommended to enable reporting only for specific runs (e.g. in CI).

any_exprs_report¶

Type:

string

Causes mypy to generate a text file report documenting how many expressions of type Any are present within your codebase.

cobertura_xml_report¶

Type:

string

Causes mypy to generate a Cobertura XML type checking coverage report.

To generate this report, you must either manually install the lxmllibrary or specify mypy installation with the setuptools extramypy[reports].

html_report / xslt_html_report¶

Type:

string

Causes mypy to generate an HTML type checking coverage report.

To generate this report, you must either manually install the lxmllibrary or specify mypy installation with the setuptools extramypy[reports].

linecount_report¶

Type:

string

Causes mypy to generate a text file report documenting the functions and lines that are typed and untyped within your codebase.

linecoverage_report¶

Type:

string

Causes mypy to generate a JSON file that maps each source file’s absolute filename to a list of line numbers that belong to typed functions in that file.

lineprecision_report¶

Type:

string

Causes mypy to generate a flat text file report with per-module statistics of how many lines are typechecked etc.

txt_report / xslt_txt_report¶

Type:

string

Causes mypy to generate a text file type checking coverage report.

To generate this report, you must either manually install the lxmllibrary or specify mypy installation with the setuptools extramypy[reports].

xml_report¶

Type:

string

Causes mypy to generate an XML type checking coverage report.

To generate this report, you must either manually install the lxmllibrary or specify mypy installation with the setuptools extramypy[reports].

Miscellaneous¶

These options may only be set in the global section ([mypy]).

junit_xml¶

Type:

string

Causes mypy to generate a JUnit XML test result document with type checking results. This can make it easier to integrate mypy with continuous integration (CI) tools.

scripts_are_modules¶

Type:

boolean

Default:

False

Makes script x become module x instead of __main__. This is useful when checking multiple scripts in a single run.

warn_unused_configs¶

Type:

boolean

Default:

False

Warns about per-module sections in the config file that do not match any files processed when invoking mypy. (This requires turning off incremental mode using incremental = False.)

verbosity¶

Type:

integer

Default:

Controls how much debug output will be generated. Higher numbers are more verbose.

Using a pyproject.toml file¶

Instead of using a mypy.ini file, a pyproject.toml file (as specified byPEP 518) may be used instead. A few notes on doing so:

The [mypy] section should have tool. prepended to its name:
- I.e., [mypy] would become [tool.mypy]
The module specific sections should be moved into [[tool.mypy.overrides]] sections:
- For example, [mypy-packagename] would become:

[[tool.mypy.overrides]] module = 'packagename' ...

Multi-module specific sections can be moved into a single [[tool.mypy.overrides]] section with a module property set to an array of modules:
- For example, [mypy-packagename,packagename2] would become:

[[tool.mypy.overrides]] module = [ 'packagename', 'packagename2' ] ...

The following care should be given to values in the pyproject.toml files as compared to ini files:
- Strings must be wrapped in double quotes, or single quotes if the string contains special characters
- Boolean values should be all lower case

Please see the TOML Documentation for more details and information on what is allowed in a toml file. See PEP 518 for more information on the layout and structure of the pyproject.toml file.

Example `pyproject.toml`¶

Here is an example of a pyproject.toml file. To use this config file, place it at the root of your repo (or append it to the end of an existing pyproject.toml file) and run mypy.

mypy global options:

[tool.mypy] python_version = "2.7" warn_return_any = true warn_unused_configs = true exclude = [ '^file1.py$', # TOML literal string (single-quotes, no escaping necessary) "^file2\.py$", # TOML basic string (double-quotes, backslash and other characters need escaping) ]

mypy per-module options:

[[tool.mypy.overrides]] module = "mycode.foo.*" disallow_untyped_defs = true

[[tool.mypy.overrides]] module = "mycode.bar" warn_return_any = false

[[tool.mypy.overrides]] module = [ "somelibrary", "some_other_library" ] ignore_missing_imports = true

The mypy configuration file - mypy 1.15.0 documentation (original) (raw)

Config file format¶

Per-module and global options¶

Inverting option values¶

Example mypy.ini¶

Global options:

Per-module options:

Import discovery¶

Platform configuration¶

Disallow dynamic typing¶

Untyped definitions and calls¶

None and Optional handling¶

Configuring warnings¶

Suppressing errors¶

Miscellaneous strictness flags¶

This won't re-export the value

This will re-export it as bar and allow other modules to import it

This will also re-export bar

Configuring error messages¶

Incremental mode¶

Advanced options¶

Report generation¶

Miscellaneous¶

Using a pyproject.toml file¶

Example pyproject.toml¶

mypy global options:

mypy per-module options:

Example `mypy.ini`¶

Example `pyproject.toml`¶