Avoid raising OverflowError in len() when len() returns negative large value

serhiy-storchaka

BPO	29839
Nosy	@warsaw, @terryjreedy, @vstinner, @serhiy-storchaka, @orenmn
PRs	bpo-29839: Raise ValueError rather than OverflowError in len() for negative values. #701

^{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 = 'https://github.com/serhiy-storchaka'
closed_at = <Date 2017-04-16.07:05:36.437>
created_at = <Date 2017-03-17.19:52:14.485>
labels = ['interpreter-core', 'type-feature', '3.7']
title = 'Avoid raising OverflowError in len() when __len__() returns negative large value'
updated_at = <Date 2017-04-16.07:05:36.434>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2017-04-16.07:05:36.434>
actor = 'serhiy.storchaka'
assignee = 'serhiy.storchaka'
closed = True
closed_date = <Date 2017-04-16.07:05:36.437>
closer = 'serhiy.storchaka'
components = ['Interpreter Core']
creation = <Date 2017-03-17.19:52:14.485>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 29839
keywords = []
message_count = 5.0
messages = ['289779', '289782', '290109', '291740', '291742']
nosy_count = 5.0
nosy_names = ['barry', 'terry.reedy', 'vstinner', 'serhiy.storchaka', 'Oren Milman']
pr_nums = ['701']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue29839'
versions = ['Python 3.7']