Merged with main

Signed-off-by: Elena Khaustova <ymax70rus@gmail.com>

kedro/io/kedro_data_catalog.py

@@ -11,7 +11,7 @@
 import difflib
 import logging
 import re
-from typing import Any
+from typing import Any, List
 
 from kedro.io.catalog_config_resolver import CatalogConfigResolver, Patterns
 from kedro.io.core import (
@@ -72,10 +72,12 @@ def __init__(
 
     @property
     def datasets(self) -> dict[str, Any]:
+        # TODO: remove when removing old catalog
         return copy.copy(self._datasets)
 
     @datasets.setter
     def datasets(self, value: Any) -> None:
+        # TODO: remove when removing old catalog
         raise AttributeError(
             "Operation not allowed. Please use KedroDataCatalog.add() instead."
         )
@@ -100,6 +102,34 @@ def __eq__(self, other) -> bool:  # type: ignore[no-untyped-def]
             other.config_resolver.list_patterns(),
         )
 
+    def keys(self, regex_search: str | None = None) -> List[str]:  # noqa: UP006
+        return self._filter_keys(regex_search)
+
+    def values(self, regex_search: str | None = None) -> List[AbstractDataset]:  # noqa: UP006
+        return [self._datasets[key] for key in self._filter_keys(regex_search)]
+
+    def items(
+        self, regex_search: str | None = None
+    ) -> List[tuple[str, AbstractDataset]]:  # noqa: UP006
+        return [(key, self._datasets[key]) for key in self._filter_keys(regex_search)]
+
+    def __iter__(self) -> str:
+        yield from self._datasets.keys()
+
+    def __getitem__(self, ds_name: str) -> AbstractDataset:
+        return self.get_dataset(ds_name)
+
+    def __setitem__(self, key: str, value: Any) -> None:
+        if key in self._datasets:
+            self._logger.warning("Replacing dataset '%s'", key)
+        if isinstance(value, AbstractDataset):
+            self._datasets[key] = value
+        else:
+            self._datasets[key] = MemoryDataset(data=value)  # type: ignore[abstract]
+
+    def _ipython_key_completions_(self) -> list[str]:
+        return list(self._datasets.keys())
+
     @property
     def _logger(self) -> logging.Logger:
         return logging.getLogger(__name__)
@@ -219,30 +249,31 @@ def _get_dataset(
     def add(
         self, ds_name: str, dataset: AbstractDataset, replace: bool = False
     ) -> None:
+        # TODO: remove when removing old catalog
         """Adds a new ``AbstractDataset`` object to the ``KedroDataCatalog``."""
-        if ds_name in self._datasets:
-            if replace:
-                self._logger.warning("Replacing dataset '%s'", ds_name)
-            else:
-                raise DatasetAlreadyExistsError(
-                    f"Dataset '{ds_name}' has already been registered"
-                )
-        self._datasets[ds_name] = dataset
+        if ds_name in self._datasets and not replace:
+            raise DatasetAlreadyExistsError(
+                f"Dataset '{ds_name}' has already been registered"
+            )
+        self.__setitem__(ds_name, dataset)
 
-    def list(self, regex_search: str | None = None) -> list[str]:
+    def list(self, regex_search: str | None = None) -> List[str]:  # noqa: UP006
         """
         List of all dataset names registered in the catalog.
         This can be filtered by providing an optional regular expression
         which will only return matching keys.
         """
+        # TODO: remove when removing old catalog
+        if regex_search == "":
+            self._logger.warning("The empty string will not match any datasets")
+            return []
+
+        return self.keys(regex_search)
 
+    def _filter_keys(self, regex_search: str | None) -> List[str]:  # noqa: UP006
         if regex_search is None:
             return list(self._datasets.keys())
 
-        if not regex_search.strip():
-            self._logger.warning("The empty string will not match any datasets")
-            return []
-
         try:
             pattern = re.compile(regex_search, flags=re.IGNORECASE)
         except re.error as exc:
@@ -305,10 +336,13 @@ def confirm(self, name: str) -> None:
             raise DatasetError(f"Dataset '{name}' does not have 'confirm' method")
 
     def add_data(self, data: dict[str, Any], replace: bool = False) -> None:
-        # This method was simplified to add memory datasets only, since
-        # adding AbstractDataset can be done via add() method
+        # TODO: remove when removing old catalog
         for ds_name, ds_data in data.items():
-            self.add(ds_name, MemoryDataset(data=ds_data), replace)  # type: ignore[abstract]
+            if ds_name in self._datasets and not replace:
+                raise DatasetAlreadyExistsError(
+                    f"Dataset '{ds_name}' has already been registered"
+                )
+            self.__setitem__(ds_name, ds_data)
 
     def add_feed_dict(self, feed_dict: dict[str, Any], replace: bool = False) -> None:
         # TODO: remove when removing old catalog