[issue30495] IDLE: modernize textview module

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 0aa0a06e8b719533aefd175a5716f1698f474052 by terryjreedy (csabella) in branch 'master':
bpo-30495: IDLE: Modernize textview.py with docstrings and PEP8 names (#1839)
https://github.com/python/cpython/commit/0aa0a06e8b719533aefd175a5716f1698f474052


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