Best Python code snippet using pandera_python
model.py
Source:model.py
...69 elif _is_field(name):70 extras[name] = value71 # drop private/reserved keywords72 return config_options, extras73def _convert_extras_to_checks(extras: Dict[str, Any]) -> List[Check]:74 """75 New in GH#383.76 Any key not in BaseConfig keys is interpreted as defining a dataframe check. This function77 defines this conversion as follows:78 - Look up the key name in Check79 - If value is80 - tuple: interpret as args81 - dict: interpret as kwargs82 - anything else: interpret as the only argument to pass to Check83 """84 checks = []85 for name, value in extras.items():86 if isinstance(value, tuple):87 args, kwargs = value, {}88 elif isinstance(value, dict):89 args, kwargs = (), value90 else:91 args, kwargs = (value,), {}92 # dispatch directly to getattr to raise the correct exception93 checks.append(Check.__getattr__(name)(*args, **kwargs))94 return checks95class _MetaSchema(type):96 """Add string representations, mainly for pydantic."""97 def __repr__(cls):98 return str(cls)99 def __str__(cls):100 return cls.__name__101class SchemaModel(metaclass=_MetaSchema):102 """Definition of a :class:`~pandera.DataFrameSchema`.103 *new in 0.5.0*104 See the :ref:`User Guide <schema_models>` for more.105 """106 Config: Type[BaseConfig] = BaseConfig107 __extras__: Optional[Dict[str, Any]] = None108 __schema__: Optional[DataFrameSchema] = None109 __config__: Optional[Type[BaseConfig]] = None110 #: Key according to `FieldInfo.name`111 __fields__: Dict[str, Tuple[AnnotationInfo, FieldInfo]] = {}112 __checks__: Dict[str, List[Check]] = {}113 __dataframe_checks__: List[Check] = []114 # This is syntantic sugar that delegates to the validate method115 @docstring_substitution(validate_doc=DataFrameSchema.validate.__doc__)116 def __new__(cls, *args, **kwargs) -> DataFrameBase[TSchemaModel]: # type: ignore [misc]117 """%(validate_doc)s"""118 return cast(DataFrameBase[TSchemaModel], cls.validate(*args, **kwargs))119 def __init_subclass__(cls, **kwargs):120 """Ensure :class:`~pandera.model_components.FieldInfo` instances."""121 super().__init_subclass__(**kwargs)122 # pylint:disable=no-member123 subclass_annotations = cls.__dict__.get("__annotations__", {})124 for field_name in subclass_annotations.keys():125 if _is_field(field_name) and field_name not in cls.__dict__:126 # Field omitted127 field = Field()128 field.__set_name__(cls, field_name)129 setattr(cls, field_name, field)130 cls.__config__, cls.__extras__ = cls._collect_config_and_extras()131 @classmethod132 def to_schema(cls) -> DataFrameSchema:133 """Create :class:`~pandera.DataFrameSchema` from the :class:`.SchemaModel`."""134 if cls in MODEL_CACHE:135 return MODEL_CACHE[cls]136 mi_kwargs = {137 name[len("multiindex_") :]: value138 for name, value in vars(cls.__config__).items()139 if name.startswith("multiindex_")140 }141 cls.__fields__ = cls._collect_fields()142 check_infos = typing.cast(143 List[FieldCheckInfo], cls._collect_check_infos(CHECK_KEY)144 )145 cls.__checks__ = cls._extract_checks(146 check_infos, field_names=list(cls.__fields__.keys())147 )148 df_check_infos = cls._collect_check_infos(DATAFRAME_CHECK_KEY)149 df_custom_checks = cls._extract_df_checks(df_check_infos)150 df_registered_checks = _convert_extras_to_checks(151 {} if cls.__extras__ is None else cls.__extras__152 )153 cls.__dataframe_checks__ = df_custom_checks + df_registered_checks154 columns, index = cls._build_columns_index(155 cls.__fields__, cls.__checks__, **mi_kwargs156 )157 kwargs = {}158 if cls.__config__ is not None:159 kwargs = {160 "coerce": cls.__config__.coerce,161 "strict": cls.__config__.strict,162 "name": cls.__config__.name,163 "ordered": cls.__config__.ordered,164 "unique": cls.__config__.unique,...
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