I am reading Practical Programming - An Introduction to Computer Science
Using Python 3. They give this example:
>>> abs(-3)
3
>>> -3 .__abs__()
3
When I try it in idle or a terminal I get different results.
Python 3.3.5 (default, Mar 12 2014, 02:09:17)
[GCC 4.6.3] on linux
>>> abs(-3)
3
>>> -3 .__abs__()
-3
If I use a variable it works.
>>> x = -3
>>> x.__abs__()
3
I am curious as to what is happening. Is the book wrong? I checked
it's errata and nothing is mentioned.
Regards, Jim
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