Added the "accounting.utils.cast" module to cast the things to the expected type in order to supress the warnings from PyCharm.

src/accounting/utils/cast.py

@@ -0,0 +1,43 @@
+# The Mia! Accounting Flask Project.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/3/15
+
+#  Copyright (c) 2023 imacat.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+"""The utility to cast a SQLAlchemy column into the column type, to avoid
+warnings from the IDE.
+
+This module should not import any other module from the application.
+
+"""
+import typing as t
+
+import sqlalchemy as sa
+
+
+def be(expression: t.Any) -> sa.BinaryExpression:
+    """Casts the SQLAlchemy binary expression to the binary expression type.
+
+    :param expression: The binary expression.
+    :return: The binary expression itself.
+    """
+    return expression
+
+
+def s(message: t.Any) -> str:
+    """Casts the LazyString message to the string type.
+
+    :param message: The message.
+    :return: The binary expression itself.
+    """
+    return message