Added the TransactionTypeEnum in the new "accounting.utils.txn_types" module to remove the dependency from the "accounting.report" module to the "accounting.transaction" module.

src/accounting/utils/txn_types.py

@@ -0,0 +1,30 @@
+# The Mia! Accounting Flask Project.
+# Author: imacat@mail.imacat.idv.tw (imacat), 2023/3/4
+
+#  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 transaction types.
+
+"""
+from enum import Enum
+
+
+class TransactionTypeEnum(Enum):
+    """The transaction types."""
+    CASH_INCOME: str = "income"
+    """The cash income transaction."""
+    CASH_EXPENSE: str = "expense"
+    """The cash expense transaction."""
+    TRANSFER: str = "transfer"
+    """The transfer transaction."""