DeprecationWarning for doctype() method when subclassing _elementtree.XMLParser #63375

assignee = 'https://github.com/serhiy-storchaka'
closed_at = <Date 2015-06-29.20:50:13.950>
created_at = <Date 2013-10-06.06:42:30.384>
labels = ['extension-modules', 'expert-XML', 'type-bug']
title = 'DeprecationWarning for doctype() method when subclassing _elementtree.XMLParser'
updated_at = <Date 2015-06-29.20:50:13.948>
user = 'https://github.com/vadmium'

activity = <Date 2015-06-29.20:50:13.948>
actor = 'serhiy.storchaka'
assignee = 'serhiy.storchaka'
closed = True
closed_date = <Date 2015-06-29.20:50:13.950>
closer = 'serhiy.storchaka'
components = ['Extension Modules', 'XML']
creation = <Date 2013-10-06.06:42:30.384>
creator = 'martin.panter'
dependencies = []
files = ['37476', '37490', '38755', '38756', '38757', '39391', '39820']
hgrepos = []
issue_num = 19176
keywords = ['patch']
message_count = 22.0
messages = ['199031', '201812', '214165', '232791', '232860', '232862', '238783', '239671', '239673', '239674', '239757', '239772', '243330', '243332', '243466', '243470', '245047', '245205', '245857', '245945', '245963', '245969']
nosy_count = 7.0
nosy_names = ['ezio.melotti', 'Arfrever', 'eli.bendersky', 'python-dev', 'berker.peksag', 'martin.panter', 'serhiy.storchaka']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue19176'
versions = ['Python 3.4', 'Python 3.5', 'Python 3.6']