[issue22420] Use print(file=sys.stderr) instead of sys.stderr.write() in IDLE

[Roundup Robot]

Roundup Robot added the comment:

New changeset 90a2a12fa34d by Terry Jan Reedy in branch '2.7':
Issue #22420: Avoid 'write to None' crashes by using print instead.
https://hg.python.org/cpython/rev/90a2a12fa34d

New changeset 42b03d5b1cbb by Terry Jan Reedy in branch '3.4':
Issue #22420: Avoid 'write to None' crashes by using print instead.
https://hg.python.org/cpython/rev/42b03d5b1cbb

New changeset ab050bd7e51c by Terry Jan Reedy in branch 'default':
Issue #22420: Merge with 3.4
https://hg.python.org/cpython/rev/ab050bd7e51c

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nosy: +python-dev

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<http://bugs.python.org/issue22420>
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