History of Python: Difference between revisions

Revision as of 01:46, 16 December 2012

Revision as of 22:11, 7 January 2013

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===Features===

Some of the major changes scheduled for Python 3.0 were:

* Changing <code>print</code> so that it is a built-in function, not a statement. This made it easier to change a module to use a different print function, as well as making the syntax more regular. In Python 2.6 and 2.7 this couldcan be enabled by entering <code>from __future__ import print_function</code>.<ref>[http://www.python.org/dev/peps/pep-3105/ PEP 3105]</ref>

* Moving <code>reduce</code> (but not <code>map</code> or <code>filter</code>) out of the built-in namespace and into functools (the rationale being that operations using ''reduce'' are expressed more clearly using an accumulation loop);<ref>[http://www.artima.com/weblogs/viewpost.jsp?thread=211200 Thread on Artima programmer blog]</ref>

* Adding support for optional function annotations that can be used for informal type declarations or other purposes;<ref>[http://www.python.org/dev/peps/pep-3107/ PEP 3197]</ref>