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authoryum <yum.food.vr@gmail.com>2023-01-01 21:05:27 -0800
committeryum <yum.food.vr@gmail.com>2023-01-01 21:44:45 -0800
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tree1d1dc1d94cde92c2f4f8ce86017395054787515d /FOSS/Python/Dependencies/future-0.18.2/docs/int_object.rst
parent0d408cc812a094a708edbe4baf536e928731cfc3 (diff)
Embed git in package
package.ps1 fetches PortableGit and embeds it in the package. This eliminates all but one runtime dependency (MSVC++ Redistributable). * Move Python into a new FOSS folder.
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+.. _int-object:
+
+int
+---
+
+Python 3's ``int`` type is very similar to Python 2's ``long``, except
+for the representation (which omits the ``L`` suffix in Python 2). Python
+2's usual (short) integers have been removed from Python 3, as has the
+``long`` builtin name.
+
+Python 3::
+
+ >>> 2**64
+ 18446744073709551616
+
+Python 2::
+
+ >>> 2**64
+ 18446744073709551616L
+
+``future`` includes a backport of Python 3's ``int`` that
+is a subclass of Python 2's ``long`` with the same representation
+behaviour as Python 3's ``int``. To ensure an integer is long compatibly with
+both Py3 and Py2, cast it like this::
+
+ >>> from builtins import int
+ >>> must_be_a_long_integer = int(1234)
+
+The backported ``int`` object helps with writing doctests and simplifies code
+that deals with ``long`` and ``int`` as special cases on Py2. An example is the
+following code from ``xlwt-future`` (called by the ``xlwt.antlr.BitSet`` class)
+for writing out Excel ``.xls`` spreadsheets. With ``future``, the code is::
+
+ from builtins import int
+
+ def longify(data):
+ """
+ Turns data (an int or long, or a list of ints or longs) into a
+ list of longs.
+ """
+ if not data:
+ return [int(0)]
+ if not isinstance(data, list):
+ return [int(data)]
+ return list(map(int, data))
+
+
+Without ``future`` (or with ``future`` < 0.7), this might be::
+
+ def longify(data):
+ """
+ Turns data (an int or long, or a list of ints or longs) into a
+ list of longs.
+ """
+ if not data:
+ if PY3:
+ return [0]
+ else:
+ return [long(0)]
+ if not isinstance(data,list):
+ if PY3:
+ return [int(data)]
+ else:
+ return [long(data)]
+ if PY3:
+ return list(map(int, data)) # same as returning data, but with up-front typechecking
+ else:
+ return list(map(long, data))