Python整数范围 [英] Python integer ranges
问题描述
在Python中,有没有办法获得可以使用的最大整数?是否有一些预定义的常量,如INT_MAX?
In Python, is there a way to get the largest integer one can use? Is there some pre-defined constant like INT_MAX?
推荐答案
Python具有任意精度整数,因此没有真正的固定最大值。你只受可用内存的限制。
Python has arbitrary precision integers so there is no true fixed maximum. You're only limited by available memory.
在Python 2中,有两种类型, int
和长
。 int
s使用C类型,而 long
s是任意精度。您可以使用 sys.maxint
来查找最大值 int
。但 int
会自动提升为 long
,因此您通常无需担心:
In Python 2, there are two types, int
and long
. int
s use a C type, while long
s are arbitrary precision. You can use sys.maxint
to find the maximum int
. But int
s are automatically promoted to long
, so you usually don't need to worry about it:
sys.maxint + 1
工作正常并返回 long
。
sys.maxint
甚至不存在于Python 3中,因为 int
和 long
被统一为一个任意的precision int
type。
sys.maxint
does not even exist in Python 3, since int
and long
were unified into a single arbitrary precision int
type.
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