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

[Roundup Robot]

Roundup Robot added the comment:

New changeset 40c73ccaee95 by Victor Stinner in branch 'default':
Issue #19512: __build_class() builtin now uses an identifier for the "metaclass" string
http://hg.python.org/cpython/rev/40c73ccaee95

New changeset 7177363d8c5c by Victor Stinner in branch 'default':
Issue #19512: fileio_init() reuses PyId_name identifier instead of "name"
http://hg.python.org/cpython/rev/7177363d8c5c

New changeset dbee50619259 by Victor Stinner in branch 'default':
Issue #19512: _count_elements() of _collections reuses PyId_get identifier
http://hg.python.org/cpython/rev/dbee50619259

New changeset 6a1ce1fd1fc0 by Victor Stinner in branch 'default':
Issue #19512: builtin print() function uses an identifier instead of literal
http://hg.python.org/cpython/rev/6a1ce1fd1fc0

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