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Diffstat (limited to 'Python/Dependencies/future-0.18.2/docs/why_python3.rst')
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diff --git a/Python/Dependencies/future-0.18.2/docs/why_python3.rst b/Python/Dependencies/future-0.18.2/docs/why_python3.rst deleted file mode 100644 index a4b535f..0000000 --- a/Python/Dependencies/future-0.18.2/docs/why_python3.rst +++ /dev/null @@ -1,66 +0,0 @@ -.. _why-python3: - -Why Python 3? -============= - -- Python 2.7 is the final Python 2.x release. Python 3.x is the future. - The Python ecosystem needs to consolidate. A split or schism between - different incompatible versions is not healthy for growing the - community. -- Function annotations -- Decimal module 100x faster. As fast as floats. -- Easier to learn. (Less cruft in language and stdlib, more consistency, better docstrings, etc.) -- Much safer handling of unicode text and encodings: fewer bugs. -- More memory efficiency (shared dict keys (PEP 412) and space-efficient - Unicode representation (PEP 393)) -- Exception chaining - -Why are Unicode strings better on Python 3? -------------------------------------------- - -- it is not the default string type (you have to prefix the string - with a u to get Unicode); - -- it is missing some functionality, e.g. casefold; - -- there are two distinct implementations, narrow builds and wide builds; - -- wide builds take up to four times more memory per string as needed; - -- narrow builds take up to two times more memory per string as needed; - -- worse, narrow builds have very naive (possibly even "broken") - handling of code points in the Supplementary Multilingual Planes. - -The unicode string type in Python 3 is better because: - -- it is the default string type; - -- it includes more functionality; - -- starting in Python 3.3, it gets rid of the distinction between - narrow and wide builds; - -- which reduces the memory overhead of strings by up to a factor - of four in many cases; - -- and fixes the issue of SMP code points. - -(quote from a mailing list post by Steve D'Aprano on 2014-01-17). - - -New features ------------- - -Standard library: -~~~~~~~~~~~~~~~~~ - -- SSL contexts in http.client -- - - - -Non-arguments for Python 3 -========================== - -- |
