The only supported minidom attribute iteration (NamedNodeMap) is O(n^2)

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-05-19.19:55:58.248>
labels = ['expert-XML', '3.8', 'performance']
title = 'The only supported minidom attribute iteration (NamedNodeMap) is O(n^2)'
updated_at = <Date 2020-05-19.19:55:58.248>
user = 'https://github.com/nthykier'

bugs.python.org fields:

activity = <Date 2020-05-19.19:55:58.248>
actor = 'nthykier'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['XML']
creation = <Date 2020-05-19.19:55:58.248>
creator = 'nthykier'
dependencies = []
files = []
hgrepos = []
issue_num = 40689
keywords = []
message_count = 1.0
messages = ['369384']
nosy_count = 1.0
nosy_names = ['nthykier']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue40689'
versions = ['Python 3.8']