Peewee 3 - Order by and Recursive common table expression (cte) - python-3.x

Question

Tools: Peewee 3, SQLite, Python 3
Official documentation for Peewee 3 recursive common table expression (cte):
http://docs.peewee-orm.com/en/latest/peewee/querying.html#common-table-expressions
I am storing a family tree in a simple self-referencing table called Person.
Structure (see below): id, name, parent, custom_order
Notes:
- parent field equals null if this person is an ancestor / root item, otherwise equals to id of parent record if this person is a child
- custom_order is a float number (score to determine who is the user's favourite person)
Objective:
I would like to retrieve the whole family tree and ORDER the results FIRST by parent and SECOND by custom_order.
Issue:
I managed to get the results list but the ORDER is wrong.
DB model
class Person(Model):
name = CharField()
parent = ForeignKeyField('self', backref='children', null = True)
custom_order = FloatField()
Note: if parent field is null then it's a root item
Query code
# Define the base case of our recursive CTE. This will be people that have a null parent foreign-key.
Base = Person.alias()
base_case = (Base
.select(Base)
.where(Base.parent.is_null())
.cte('base', recursive=True))
# Define the recursive terms.
RTerm = Person.alias()
recursive = (RTerm
.select(RTerm)
.join(base_case, on=(RTerm.parent == base_case.c.id)))
# The recursive CTE is created by taking the base case and UNION ALL with the recursive term.
cte = base_case.union_all(recursive)
# We will now query from the CTE to get the people
query = cte.select_from(cte.c.id, cte.c.name, cte.c.parent_id, cte.c.custom_order).order_by(cte.c.parent_id, cte.c.custom_order)
print(query.sql())
Printed query syntax
('WITH RECURSIVE "base" AS
(
SELECT "t1"."id", "t1"."name", "t1"."parent_id", "t1"."custom_order" FROM "person" AS "t1" WHERE ("t1"."parent_id" IS ?)
UNION ALL
SELECT "t2"."id", "t2"."name", "t2"."parent_id", "t2"."custom_order" FROM "person" AS "t2" INNER JOIN "base" ON ("t2"."parent_id" = "base"."id")
)
SELECT "base"."id", "base"."name", "base"."parent_id" FROM "base"
ORDER BY "base"."parent_id", "base"."custom_order"',
[None])

Answer 1

Root of the problem
The code posted in the question works correctly. I verified it by printing the query results to the console:
query = cte.select_from(cte.c.id, cte.c.name, cte.c.parent_id, cte.c.custom_order).order_by(cte.c.parent_id, cte.c.custom_order).dicts()
print(json.dumps(list(query), indent=4))
The problem originated from the fact that I was passing the query results to a nested python Dictionary before printing them to the console, BUT the Python Dictionary is unordered. So, no wonder the printed results were in a different order than the database results.
Solution
Use a Python Ordered Dictionary if you want to store the query results in a fixed order:
import collections
treeDictionary = collections.OrderedDict()