Stop set.difference when set is empty #72258
Description
| BPO | 28071 |
|---|---|
| Nosy | @rhettinger, @terryjreedy, @serhiy-storchaka, @tirkarthi |
| Files |
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/rhettinger'
closed_at = <Date 2016-09-12.05:43:41.329>
created_at = <Date 2016-09-10.22:22:04.587>
labels = ['3.7', 'performance']
title = 'Stop set.difference when set is empty'
updated_at = <Date 2019-06-11.05:50:18.981>
user = 'https://github.com/terryjreedy'bugs.python.org fields:
activity = <Date 2019-06-11.05:50:18.981>
actor = 'xtreak'
assignee = 'rhettinger'
closed = True
closed_date = <Date 2016-09-12.05:43:41.329>
closer = 'rhettinger'
components = []
creation = <Date 2016-09-10.22:22:04.587>
creator = 'terry.reedy'
dependencies = []
files = ['44565']
hgrepos = []
issue_num = 28071
keywords = ['patch']
message_count = 8.0
messages = ['275707', '275835', '275841', '275962', '275965', '275967', '306973', '345185']
nosy_count = 5.0
nosy_names = ['rhettinger', 'terry.reedy', 'python-dev', 'serhiy.storchaka', 'xtreak']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'patch review'
status = 'closed'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue28071'
versions = ['Python 3.6', 'Python 3.7']