#741 Review#1 fixes. Subtask arch improvements

stroyprombeton/management/commands/parse_stalbeton.py

@@ -81,6 +81,9 @@ def text(self) -> str:
 
 
 class RootCategoryPage(CategoryPage):
+    # @todo #741:30m  Implement parse_stalbeton.Category.children() method.
+    #  And reuse it as polymorphic method in subclasses.
+    #  The task has pros and cons, so, we'll discuss it for the first.
     def second_level(self) -> typing.List['SecondLevelCategoryPage']:
         return [
             SecondLevelCategoryPage(p['href'])
@@ -116,13 +119,16 @@ def parse():
     main = Page(path='/')
     through = ThroughElements(page=main)
     roots = through.roots()
+    # @todo #741:30m  Create parse_stalbeton.Categories class.
+    #  And hide children list assembling there.
+    #  See PR #758 discussion for example.
     seconds = chain.from_iterable((r.second_level() for r in roots))
     thirds = chain.from_iterable((s.third_level() for s in seconds))
     options = chain.from_iterable((t.options() for t in thirds))  # Ignore PyFlakesBear
     # @todo #741:60m Save parsed stalbeton to a DB.
-    #  It should not some high performance DB.
-    #  It can be sqlite for example or even some pickle lib.
-    #  DB is required to analyze data without loading stalbeton site.
+    #  DB isn't required to be high performance.
+    #  It can be sqlite or postgres or pickle lib or whatever else.
+    #  DB is required to analyze data without loading stalbeton site every time.
 
 
 class Command(BaseCommand):