IDLE crashes when KeyError is raised during calltip generation #82870
Description
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/terryjreedy'
closed_at = <Date 2020-04-04.20:37:09.429>
created_at = <Date 2019-11-04.23:45:56.427>
labels = ['3.8', 'expert-IDLE', 'type-bug', '3.7', '3.9']
title = 'IDLE crashes when KeyError is raised during calltip generation'
updated_at = <Date 2020-04-04.20:37:09.428>
user = 'https://github.com/mr-nfamous'bugs.python.org fields:
activity = <Date 2020-04-04.20:37:09.428>
actor = 'terry.reedy'
assignee = 'terry.reedy'
closed = True
closed_date = <Date 2020-04-04.20:37:09.429>
closer = 'terry.reedy'
components = ['IDLE']
creation = <Date 2019-11-04.23:45:56.427>
creator = 'bup'
dependencies = []
files = []
hgrepos = []
issue_num = 38689
keywords = ['patch']
message_count = 8.0
messages = ['355983', '356008', '356010', '356592', '365737', '365739', '365740', '365779']
nosy_count = 4.0
nosy_names = ['terry.reedy', 'taleinat', 'bup', 'miss-islington']
pr_nums = ['17152', '19353', '19354']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue38689'
versions = ['Python 3.7', 'Python 3.8', 'Python 3.9']