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Swapping between 0 and 1 in Python

 

Swapping between 0 and 1 in Python
staunch

15 Sep, 2009 - 11:22 AM
Post #1

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I'm trying to code a simple two-player game in Python. What i want is a simple way to switch between 0 and 1 in one line without obfuscation, something like this:

CODE
curplayer = not curplayer


Does that work in Python? Will not 0 evaluate to 1, and not 1 evaluate to 0? Is there something similar?

Thanks,
`Staunch

This post has been edited by staunch: 15 Sep, 2009 - 11:22 AM

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girasquid

RE: Swapping Between 0 And 1 In Python

15 Sep, 2009 - 11:28 AM
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Python has an interactive shell that you can use to test things like this out:
CODE

>>> foo = 0
>>> foo
0
>>> foo = not foo
>>> foo
True
>>> foo = not foo
>>> foo
False
>>> int(foo)
0
>>> foo = not foo
>>> int(foo)
1
>>> foo = int(not foo)
>>> foo
0
>>> foo = int(not foo)
>>> foo
1


As you can see, you'll need to wrap the not in a call to int(), but then you should be fine.
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staunch

RE: Swapping Between 0 And 1 In Python

15 Sep, 2009 - 11:32 AM
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QUOTE(girasquid @ 15 Sep, 2009 - 11:28 AM) *

As you can see, you'll need to wrap the not in a call to int(), but then you should be fine.


Ah, perfect! Thanks, man. I suppose i could have just called it up in terminal to check it myself... it's been a while since i've coded in Python. I forgot about these things. D:
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code_m

RE: Swapping Between 0 And 1 In Python

17 Sep, 2009 - 10:28 AM
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It's worthy to note that any instantance of python (in the shell or executing a program), python will provide True and False

python
>>> type.mro(bool)
[<type 'bool'>, <type 'int'>, <type 'object'>]


Above I show that bool is a superset of int... So now you have much more clear syntax while it's still very easy for you biggrin.gif
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