json int encoding incorrect for dbus.Byte

[bradbishop]

BPO	33797
Nosy	@mdickinson, @ZackerySpytz, @bradbishop, @tirkarthi

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2020-05-16.07:38:34.267>
created_at = <Date 2018-06-07.16:32:41.266>
labels = ['type-bug', 'library']
title = 'json int encoding incorrect for dbus.Byte'
updated_at = <Date 2020-05-16.07:38:34.266>
user = 'https://github.com/bradbishop'

bugs.python.org fields:

activity = <Date 2020-05-16.07:38:34.266>
actor = 'ned.deily'
assignee = 'none'
closed = True
closed_date = <Date 2020-05-16.07:38:34.267>
closer = 'ned.deily'
components = ['Library (Lib)']
creation = <Date 2018-06-07.16:32:41.266>
creator = 'radsquirrel'
dependencies = []
files = []
hgrepos = []
issue_num = 33797
keywords = []
message_count = 2.0
messages = ['318954', '369015']
nosy_count = 4.0
nosy_names = ['mark.dickinson', 'ZackerySpytz', 'radsquirrel', 'xtreak']
pr_nums = []
priority = 'normal'
resolution = 'wont fix'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue33797'
versions = ['Python 2.7']

[bradbishop]

JSON does not correctly encode dbus.Byte from dbus-python on 2.7:

dbus.Byte is a subclass of int with its own __str__ implementation.

>>> import json
>>> import dbus
>>> json.dumps(dbus.Byte(0))
'\x00'

On 3.x:

>>> import json
>>> import dbus
>>> json.dumps(dbus.Byte(0))
'0'

This seems to have been fixed in 3.x here:
https://bugs.python.org/issue18264
and subsequently:
https://bugs.python.org/issue26719

I'm interested in backporting these but they are marked as enhancements. However a backport for a similar issue:
https://bugs.python.org/issue27934

was accepted. Would the maintainers be amenable to a backport of 18264 & 26719?

[ZackerySpytz]

Python 2 is EOL, so I think this issue should be closed.