Python中的固定宽度整数类型(例如uint32) [英] Fixed width integer types (e.g. uint32) in Python

问题描述

某些数学运算，尤其是从硬件驱动程序读取的数据，可能取决于数据类型的固定宽度.示例:按位移位.创建具有固定宽度(例如uint32，int16等)的整数变量(会相应地溢出/移位)的Python方法是什么?

Certain mathematical operations, especially on data read from hardware drivers, can depend on fixed width of the data type. Example: bitwise shift. What is the Pythonic way of creating integer variables with fixed width (e.g. uint32, int16 etc.) that would overflow/shift accordingly?

推荐答案

我建议 fixedint 库.该库中的类按以下约定命名:

I would suggest the fixedint library. The classes in that library are named in the following convention:

[Mutable][U]Int<N>

因此，对于您的两个示例，类将是

So for your two examples, the classes would be

#    C++                 Python fixedint
 std::uint32                 UInt32
 std::uint16                 UInt16

这支持诸如移位之类的事情

This supports things like bit-shifting, etc

>>> a = fixedint.UInt32(14)
>>> a
UInt32(14)
>>> a << 2
UInt32(56)

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