“<>"在Python中是什么意思? [英] What does `<>` mean in Python?

问题描述

我正在尝试在Python 3.3中使用旧的库(可追溯到2003年！).导入时，Python抛出错误，因为源文件中有<>标志，例如:

I'm trying to use in Python 3.3 an old library (dating from 2003!). When I import it, Python throws me an error because there are <> signs in the source file, e.g.:

if (cnum < 1000 and nnum <> 1000 and ntext[-1] <> "s":
    ...

我想这是该语言中已被废弃的标志.

I guess it's a now-abandoned sign in the language.

这到底是什么意思，我应该用哪个(较新的)符号代替?

What exactly does it mean, and which (more recent) sign should I replace it with?

推荐答案

这意味着不等于.它取自ABC(python的前身)，请参见此处:

It means not equal to. It was taken from ABC (python's predecessor) see here:

x < y, x <= y, x >= y, x > y, x = y, x <> y, 0 <= d < 10

订单测试(<>表示'不等于')

我相信ABC是从Guido开始使用的Pascal语言中获得的.

I believe ABC took it from Pascal, a language Guido began programming with.

现在已在Python 3中将其删除.改用!=.如果您疯狂，则可以使用

It has now been removed in Python 3. Use != instead. If you are CRAZY you can scrap != and allow only <> in Py3K using this easter egg:

>>> from __future__ import barry_as_FLUFL
>>> 1 <> 2
True

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