[issue19512] Avoid most calls to PyUnicode_DecodeUTF8Stateful() in Python interactive mode

[Roundup Robot]

Roundup Robot added the comment:

New changeset 5e402c16a74c by Victor Stinner in branch 'default':
Issue #19512: Add _PySys_GetObjectId() and _PySys_SetObjectId() functions
http://hg.python.org/cpython/rev/5e402c16a74c

New changeset cca13dd603a9 by Victor Stinner in branch 'default':
Issue #19512: PRINT_EXPR bytecode now uses an identifier to get sys.displayhook
http://hg.python.org/cpython/rev/cca13dd603a9

New changeset 6348764bacdd by Victor Stinner in branch 'default':
Issue #19512: pickle now uses an identifier to only create the Unicode string
http://hg.python.org/cpython/rev/6348764bacdd

New changeset 954167ce92a3 by Victor Stinner in branch 'default':
Issue #19512: add some common identifiers to only create common strings once,
http://hg.python.org/cpython/rev/954167ce92a3

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<http://bugs.python.org/issue19512>
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