I know array.array allows to have int/float array. How to have bool array? Memory efficient. so that 1 value is stored as 1 bit. does array support it?
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Prog1020
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2probably not ... and if that concerns you , python may not be the ideal language for this project – Joran Beasley Sep 16 '13 at 21:58
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2`array.array` isn't `numpy`. – Prog1020 Sep 16 '13 at 21:59
2 Answers
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As far as I know there is nothing to store booleans this efficiently in native Python, but you can checkout the bitarray library which is I think what you are looking for.
Daniel Perez
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I've seen some stability issues with `bitarray`. There seems to be a segfault affecting the [`itersearch`](http://stackoverflow.com/questions/17981959/create-a-list-like-object-using-a-bitarray) method, at least. I'm not sure whether the module is actively maintained, so there might not be fixes coming. – user2357112 Sep 16 '13 at 22:07
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I did not have any problem while using it with Python 3 (for what I used it at least). I checked out the [Github issue](https://github.com/ilanschnell/bitarray/issues/12) you are probably talking about but I could not reproduce it. Are you still having the same issue? – Daniel Perez Sep 16 '13 at 22:14
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>>> sys.getsizeof(int)
436
>>> sys.getsizeof(bool)
436
>>> sys.getsizeof(bool())
12
>>> sys.getsizeof(int())
12
>>>
basically even if you could you would not get any space saving ...
this may also be of interest
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Joran Beasley
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it was more to demonstrate that a bool is more than 1 bit in python – Joran Beasley Sep 16 '13 at 22:23
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