[issue30597] Show expected input in custom "print" error message

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Actually end=' ' in Python 3 is not exact replacement of the trailing comma in Python 2. But it covers most of cases. The difference is too subtle and too subtle for the user that makes an error of using Python 2 syntax in Python 3.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30597>
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