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[3.8] bpo-43199: Briefly explain why no goto (GH-24852) by miss-islington · Pull Request #24863 · python/cpython · GitHub

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[3.8] bpo-43199: Briefly explain why no goto (GH-24852) #24863

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miss-islington merged 1 commit into from
Mar 15, 2021
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[3.8] bpo-43199: Briefly explain why no goto (GH-24852) #24863

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10 changes: 9 additions & 1 deletion Doc/faq/design.rst
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Expand Up @@ -599,7 +599,15 @@ sloppy and not write test cases at all.
Why is there no goto?
---------------------

You can use exceptions to provide a "structured goto" that even works across
In the 1970s people realized that unrestricted goto could lead
to messy "sphagetti" code that was hard to understand and revise.
In a high-level language, it is also unneeded as long as there
are ways to branch (in Python, with ``if`` statements and ``or``,
``and``, and ``if-else`` expressions) and loop (with ``while``
and ``for`` statements, possibly containing ``continue`` and ``break``).

One can also use exceptions to provide a "structured goto"
that works even across
function calls. Many feel that exceptions can conveniently emulate all
reasonable uses of the "go" or "goto" constructs of C, Fortran, and other
languages. For example::
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Documentation/2021-03-13-18-43-54.bpo-43199.ZWA6KX.rst
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Answer "Why is there no goto?" in the Design and History FAQ.
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