Can PyYAML dump dict items in non-alphabetical order?

Question

I\'m using yaml.dump to output a dict. It prints out each item in alphabetical order based on the key.

>>> d = {\"z\":0,\"y\":0,\"x\":         


        

Answer 1

There are two things you need to do to get this as you want:

• you need to use something else than a dict, because it doesn't keep the items ordered
• you need to dump that alternative in the appropriate way.¹

import sys
import ruamel.yaml
from ruamel.yaml.comments import CommentedMap

d = CommentedMap()
d['z'] = 0
d['y'] = 0
d['x'] = 0

ruamel.yaml.round_trip_dump(d, sys.stdout)

output:

z: 0
y: 0
x: 0

---

¹ _{This was done using ruamel.yaml a YAML 1.2 parser, of which I am the author.}