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bpo-37353: Updated parser note about source code compatibility(GH-14277)

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Prateek Nayak 2019-09-20 19:25:26 +05:30 committed by Zachary Ware
parent 8b03f943c3
commit 062cfe3b11
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@ -51,7 +51,8 @@ Python version to another as source text will always allow correct parse trees
to be created in the target version, with the only restriction being that to be created in the target version, with the only restriction being that
migrating to an older version of the interpreter will not support more recent migrating to an older version of the interpreter will not support more recent
language constructs. The parse trees are not typically compatible from one language constructs. The parse trees are not typically compatible from one
version to another, whereas source code has always been forward-compatible. version to another, though source code has usually been forward-compatible within
a major release series.
Each element of the sequences returned by :func:`st2list` or :func:`st2tuple` Each element of the sequences returned by :func:`st2list` or :func:`st2tuple`
has a simple form. Sequences representing non-terminal elements in the grammar has a simple form. Sequences representing non-terminal elements in the grammar