dict now keeps the storage order in python3.7, but the pprint output is sorted automatically

I posted it in commemoration because it triggered the update of python. It's a language that is currently being updated.

--Referenced site

• https://qiita.com/tonluqclml/items/db797d9ad03604ae489c
• https://note.nkmk.me/python-collections-ordereddict/
• https://note.nkmk.me/python-pprint-pretty-print/

By the way, the operation check is Python3.7.3-> Python3.8.5.

`` `dict``` keeps the storage order in python 3.7 and above

Very convenient! However, when printing with `` pprint```, the benefit is not so good due to the ** pprint``` ** sort before output ** specification.

test1.py

from pprint import pprint

d = {1: 10, 9: 90, 3: 30, 7: 70, 5: 50}
print(d)
pprint(d)

out1

{1: 10, 9: 90, 3: 30, 7: 70, 5: 50}
{1: 10, 3: 30, 5: 50, 7: 70, 9: 90}

The same applies when substituting one by one.

test2.py

from pprint import pprint

d2 = {}
d2[0] = 0
d2[8] = 80
d2[2] = 20
d2[6] = 60
d2[4] = 40
print(d2)
pprint(d2)

out2

{0: 0, 8: 80, 2: 20, 6: 60, 4: 40}
{0: 0, 2: 20, 4: 40, 6: 60, 8: 80}

`sort_dicts = False``` can be specified for `pprint``` in python3.8 or later

From python3.8, it seems that the `sort_dicts``` option has been added to pprint```. The default is `` sort_dicts = True, so if you want to keep the order, you need to specify `` `False.

test3.py

from pprint import pprint

d = {1: 10, 9: 90, 3: 30, 7: 70, 5: 50}
print(d)
pprint(d, sort_dicts=False)

out3

{1: 10, 9: 90, 3: 30, 7: 70, 5: 50}
{1: 10, 9: 90, 3: 30, 7: 70, 5: 50}