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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": ... I guess it's a now-abandoned sign in the language.
What exactly does it mean, and which (more recent) sign should I replace it with?
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In Python, you use the double slash // operator to perform floor division. This // operator divides the first number by the second number and rounds the result down to the nearest integer (or whole number).
The % symbol in Python is called the Modulo Operator. It returns the remainder of dividing the left hand operand by right hand operand. It's used to get the remainder of a division problem.
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. Order tests ( <> means 'not equals')
[::1] means: Start at the beginning, end when it ends, walk in steps of 1 (which is the default, so you don't even need to write it). [::-1] means: Start at the end (the minus does that for you), end when nothing's left and walk backwards by 1.
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 < 10Order tests (
<>means 'not equals')
I believe ABC took it from Pascal, a language Guido began programming with.
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 File "<stdin>", line 1 1 != 2 ^ SyntaxError: with Barry as BDFL, use '<>' instead of '!=' >>> 1 <> 2 True It means NOT EQUAL, but it is deprecated, use != instead.
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