MPT-17825: resolve WPS400 and WPS407 violations (#163)

🤖 **Codex-generated PR** — Please review carefully.

## Summary
- remove obsolete ignores for WPS400, WPS402, WPS420, and WPS458
- resolve WPS400 in package re-exports by using explicit F401 ignores
with absolute imports
- resolve WPS407 by making shared constants read-only and replacing the
mutable stats template with a factory

## Validation
- make check
- make check-all

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

Closes [MPT-17825](https://softwareone.atlassian.net/browse/MPT-17825)

## Changes

- Converted relative imports to absolute imports in package
`__init__.py` files (`accounts`, `price_lists`, `products`) and added
explicit `__all__` declarations to define public APIs
- Made module-level constants immutable by wrapping dictionaries with
`MappingProxyType` in `accounts/constants.py`,
`price_lists/constants.py`, and `products/constants.py`
- Updated class attributes in `PriceListExcelFileManager` and
`ProductExcelFileManager` to directly reference immutable constants
instead of wrapping them again
- Introduced `default_results()` factory function in `stats.py` to
replace mutable `DEFAULT_RESULTS` and removed reliance on `deepcopy()`
for stats initialization
- Removed WPS458 from flake8 per-file-ignores in `pyproject.toml`

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

[MPT-17825]:
https://softwareone.atlassian.net/browse/MPT-17825?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

Author: d3rky

cli/core/accounts/__init__.py

@@ -1 +1,3 @@
-from .app import app  # noqa
+from cli.core.accounts.app import app
+
+__all__ = ["app"]

cli/core/accounts/constants.py

@@ -1,11 +1,13 @@
+from types import MappingProxyType
+
 CREATING = "creating"
 FETCHING = "fetching"
 READING = "reading"
 REMOVING = "removing"
 
-STATUS_MSG = {
+STATUS_MSG = MappingProxyType({
     CREATING: "Making account",
     FETCHING: "Fetching account information",
     READING: "Reading accounts from the configuration file",
     REMOVING: "Removing account",
-}
+})

cli/core/price_lists/__init__.py

@@ -1 +1,3 @@
-from .app import app  # noqa
+from cli.core.price_lists.app import app
+
+__all__ = ["app"]

cli/core/price_lists/constants.py

@@ -1,3 +1,5 @@
+from collections.abc import Mapping
+from types import MappingProxyType
 from typing import Any
 
 ERROR_COLUMN_NAME = "Error"
@@ -8,7 +10,7 @@
     TAB_PRICE_ITEMS,
 )
 
-REQUIRED_FIELDS_BY_TAB: dict[str, Any] = {}
+REQUIRED_FIELDS_BY_TAB: Mapping[str, Any] = MappingProxyType({})
 
 GENERAL_PRICELIST_ID = "Pricelist ID"
 GENERAL_CURRENCY = "Currency"

cli/core/price_lists/handlers/price_list_excel_file_manager.py

@@ -1,5 +1,3 @@
-from types import MappingProxyType
-
 from cli.core.handlers.vertical_tab_file_manager import VerticalTabFileManager
 from cli.core.price_lists.constants import (
     GENERAL_FIELDS,
@@ -18,5 +16,5 @@ class PriceListExcelFileManager(VerticalTabFileManager):
     _fields = GENERAL_FIELDS
     _id_field = GENERAL_PRICELIST_ID
     _required_tabs = REQUIRED_TABS
-    _required_fields_by_tab = MappingProxyType(REQUIRED_FIELDS_BY_TAB)
+    _required_fields_by_tab = REQUIRED_FIELDS_BY_TAB
     _sheet_name = TAB_GENERAL

cli/core/products/__init__.py

@@ -1 +1,3 @@
-from .app import app  # noqa
+from cli.core.products.app import app
+
+__all__ = ["app"]

cli/core/products/constants.py

@@ -1,3 +1,5 @@
+from types import MappingProxyType
+
 ID_COLUMN_NAME = "ID"
 ACTION_COLUMN_NAME = "Action"
 CREATED_COLUMN_NAME = "Created"
@@ -271,7 +273,7 @@
     SETTINGS_SETTING,
     SETTINGS_VALUE,
 )
-SETTINGS_API_MAPPING = {
+SETTINGS_API_MAPPING = MappingProxyType({
     "Change order validation (draft)": "preValidation.changeOrderDraft",
     "Item selection validation": "itemSelection",
     "Order queue changes notification": "orderQueueChanges",
@@ -283,15 +285,15 @@
     "Purchase order validation (draft)": "preValidation.purchaseOrderDraft",
     "Purchase order validation (query)": "preValidation.purchaseOrderQuery",
     "Termination order validation (draft)": "preValidation.terminationOrder",
-}
+})
 SETTINGS_FIELDS = (
     SETTINGS_SETTING,
     SETTINGS_ACTION,
     SETTINGS_VALUE,
 )
 
 
-REQUIRED_FIELDS_BY_TAB = {
+REQUIRED_FIELDS_BY_TAB = MappingProxyType({
     TAB_GENERAL: GENERAL_REQUIRED_FIELDS,
     TAB_PARAMETERS_GROUPS: PARAMETERS_GROUPS_REQUIRED_FIELDS,
     TAB_ITEMS_GROUPS: ITEMS_GROUPS_REQUIRED_FIELDS,
@@ -302,8 +304,8 @@
     TAB_ITEMS: ITEMS_REQUIRED_FIELDS,
     TAB_TEMPLATES: TEMPLATES_REQUIRED_FIELDS,
     TAB_SETTINGS: SETTINGS_REQUIRED_FIELDS,
-}
+})
 
-REQUIRED_FIELDS_WITH_VALUES_BY_TAB = {
+REQUIRED_FIELDS_WITH_VALUES_BY_TAB = MappingProxyType({
     TAB_GENERAL: GENERAL_REQUIRED_FIELDS_WITH_VALUES,
-}
+})

cli/core/products/handlers/product_excel_file_manager.py

@@ -1,5 +1,3 @@
-from types import MappingProxyType
-
 from cli.core.handlers.vertical_tab_file_manager import VerticalTabFileManager
 from cli.core.products.constants import (
     GENERAL_FIELDS,
@@ -18,5 +16,5 @@ class ProductExcelFileManager(VerticalTabFileManager):
     _fields = GENERAL_FIELDS
     _id_field = GENERAL_PRODUCT_ID
     _required_tabs = REQUIRED_TABS
-    _required_fields_by_tab = MappingProxyType(REQUIRED_FIELDS_BY_TAB)
+    _required_fields_by_tab = REQUIRED_FIELDS_BY_TAB
     _sheet_name = TAB_GENERAL

cli/core/stats.py

@@ -1,4 +1,3 @@
-import copy
 from abc import ABC, abstractmethod
 from typing import TypedDict
 
@@ -23,12 +22,14 @@ class TabResults(TypedDict):
     skipped: int
 
 
-DEFAULT_RESULTS: TabResults = {
-    "synced": 0,
-    "error": 0,
-    "total": 0,
-    "skipped": 0,
-}
+def default_results() -> TabResults:
+    """Create a fresh statistics container."""
+    return {
+        "synced": 0,
+        "error": 0,
+        "total": 0,
+        "skipped": 0,
+    }
 
 
 class ErrorMessagesCollector:
@@ -186,16 +187,16 @@ class ProductStatsCollector(StatsCollector):
     """Statistics collector specifically for product synchronization operations."""
 
     def __init__(self) -> None:
-        general: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        parameters_groups: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        items_groups: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        agreements_parameters: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        asset_parameters: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        item_parameters: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        request_parameters: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        subscription_parameters: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        item_rows: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        templates: TabResults = copy.deepcopy(DEFAULT_RESULTS)
+        general: TabResults = default_results()
+        parameters_groups: TabResults = default_results()
+        items_groups: TabResults = default_results()
+        agreements_parameters: TabResults = default_results()
+        asset_parameters: TabResults = default_results()
+        item_parameters: TabResults = default_results()
+        request_parameters: TabResults = default_results()
+        subscription_parameters: TabResults = default_results()
+        item_rows: TabResults = default_results()
+        templates: TabResults = default_results()
 
         tabs = {
             "General": general,
@@ -225,8 +226,8 @@ class PriceListStatsCollector(StatsCollector):
     """
 
     def __init__(self) -> None:
-        general: TabResults = copy.deepcopy(DEFAULT_RESULTS)
-        price_items: TabResults = copy.deepcopy(DEFAULT_RESULTS)
+        general: TabResults = default_results()
+        price_items: TabResults = default_results()
 
         tabs = {
             "General": general,

pyproject.toml

@@ -121,7 +121,7 @@ select = ["AAA", "E999", "WPS"]
 show-source = true
 statistics = false
 per-file-ignores = [
-  "*.py:WPS204,WPS210,WPS211,WPS213,WPS214,WPS218,WPS221,WPS229,WPS231,WPS232,WPS234,WPS235,WPS237,WPS322,WPS327,WPS332,WPS335,WPS336,WPS338,WPS339,WPS342,WPS347,WPS349,WPS400,WPS407,WPS410,WPS412,WPS420,WPS432,WPS458",
+  "*.py:WPS204,WPS210,WPS211,WPS213,WPS214,WPS218,WPS221,WPS229,WPS231,WPS232,WPS234,WPS235,WPS237,WPS322,WPS327,WPS332,WPS335,WPS336,WPS338,WPS339,WPS342,WPS347,WPS349,WPS410,WPS412,WPS432",
   "tests/**:WPS202,WPS203,WPS204,WPS210,WPS211,WPS213,WPS218,WPS221,WPS235,WPS322,WPS335,WPS339,WPS342,WPS432"
 ]