pickle special methods are looked up on the instance rather than the type #60455

assignee = 'https://github.com/benjaminp'
closed_at = None
created_at = <Date 2012-10-16.18:24:53.984>
labels = ['interpreter-core', 'type-bug', '3.7']
title = 'pickle special methods are looked up on the instance rather than the type'
updated_at = <Date 2018-02-13.16:52:20.309>
user = 'https://github.com/ericsnowcurrently'

activity = <Date 2018-02-13.16:52:20.309>
actor = 'lukasz.langa'
assignee = 'benjamin.peterson'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2012-10-16.18:24:53.984>
creator = 'eric.snow'
dependencies = []
files = []
hgrepos = []
issue_num = 16251
keywords = ['patch']
message_count = 22.0
messages = ['173066', '173068', '173083', '173118', '173119', '182258', '191951', '191984', '192265', '208167', '211329', '211331', '211338', '213799', '251340', '251343', '301948', '301962', '301985', '301989', '301990', '312132']
nosy_count = 11.0
nosy_names = ['barry', 'rhettinger', 'pitrou', 'benjamin.peterson', 'hodgestar', 'Arfrever', 'lukasz.langa', 'python-dev', 'eric.snow', 'serhiy.storchaka', 'robagar']
pr_nums = ['3508']
priority = 'normal'
resolution = None
stage = 'needs patch'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue16251'
versions = ['Python 3.6', 'Python 3.7']