Mercurial > repos > guerler > springsuite
diff planemo/lib/python3.7/site-packages/future/builtins/iterators.py @ 0:d30785e31577 draft
"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author | guerler |
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date | Fri, 31 Jul 2020 00:18:57 -0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/planemo/lib/python3.7/site-packages/future/builtins/iterators.py Fri Jul 31 00:18:57 2020 -0400 @@ -0,0 +1,52 @@ +""" +This module is designed to be used as follows:: + + from future.builtins.iterators import * + +And then, for example:: + + for i in range(10**15): + pass + + for (a, b) in zip(range(10**15), range(-10**15, 0)): + pass + +Note that this is standard Python 3 code, plus some imports that do +nothing on Python 3. + +The iterators this brings in are:: + +- ``range`` +- ``filter`` +- ``map`` +- ``zip`` + +On Python 2, ``range`` is a pure-Python backport of Python 3's ``range`` +iterator with slicing support. The other iterators (``filter``, ``map``, +``zip``) are from the ``itertools`` module on Python 2. On Python 3 these +are available in the module namespace but not exported for * imports via +__all__ (zero no namespace pollution). + +Note that these are also available in the standard library +``future_builtins`` module on Python 2 -- but not Python 3, so using +the standard library version is not portable, nor anywhere near complete. +""" + +from __future__ import division, absolute_import, print_function + +import itertools +from future import utils + +if not utils.PY3: + filter = itertools.ifilter + map = itertools.imap + from future.types import newrange as range + zip = itertools.izip + __all__ = ['filter', 'map', 'range', 'zip'] +else: + import builtins + filter = builtins.filter + map = builtins.map + range = builtins.range + zip = builtins.zip + __all__ = []