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How to use get_function_signature_hook method in pandera

Best Python code snippet using pandera_python

function_sig_hook.py

Source:function_sig_hook.py

1from mypy.plugin import CallableType, CheckerPluginInterface, FunctionSigContext, Plugin2from mypy.types import Instance, Type3class FunctionSigPlugin(Plugin):4    def get_function_signature_hook(self, fullname):5        if fullname == '__main__.dynamic_signature':6            return my_hook7        return None8def _str_to_int(api: CheckerPluginInterface, typ: Type) -> Type:9    if isinstance(typ, Instance):10        if typ.type.fullname == 'builtins.str':11            return api.named_generic_type('builtins.int', [])12        elif typ.args:13            return typ.copy_modified(args=[_str_to_int(api, t) for t in typ.args])14    return typ15def my_hook(ctx: FunctionSigContext) -> CallableType:16    return ctx.default_signature.copy_modified(17        arg_types=[_str_to_int(ctx.api, t) for t in ctx.default_signature.arg_types],18        ret_type=_str_to_int(ctx.api, ctx.default_signature.ret_type),...

plugin_b.pyi

Source:plugin_b.pyi

...7from mypy.plugin import Plugin8cls_decorator_names_we_care_about: Any9classes_w_clsdec_methods: Any10class CustomPlugin(Plugin):11    def get_function_signature_hook(12        self, fullname: str13    ) -> Optional[Callable[[FunctionSigContext], CallableType]]: ...14    def get_class_decorator_hook(15        self, fullname: str16    ) -> Optional[Callable[[ClassDefContext], None]]: ...17    def get_customize_class_mro_hook(18        self, fullname: str19    ) -> Optional[Callable[[ClassDefContext], None]]: ...20def fill_in_decorators(ctx: ClassDefContext) -> None: ...21def cls_decorator_hook(ctx: ClassDefContext) -> None: ......

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