What is the maximum IBTree key my system can use?

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Hi.
*IOBTree()[(2**32)-1] =3D True* is raising a TypeError on my computer, and =
in=20
fact it seems the maximum key I can use is 2**31-1

   - Is there a constant somewhere indicating the maximum key I can use in=
=20
   a IOBTree? I found that IBTreeFamily implements a maxint parameter, but =
how=20
   can I know which family I am using?=20
   <https://pythonhosted.org/BTrees/_modules/BTrees/Interfaces.html#IBTreeF=
amily>
   - Is the maximum value the same for everyone? If no, how could I=20
   increase this value?
   - Also, what are your thoughts on 128-bit support=20
   <https://github.com/zopefoundation/BTrees/issues/100>?


Thank you!
=C3=89loi Rivard


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<div dir=3D"ltr"><div>Hi.</div><div><span style=3D"background-color: rgb(20=
4, 204, 204);"><i><b>IOBTree()[(2**32)-1] =3D True</b></i></span> is raisin=
g a TypeError on my computer, and in fact it seems the maximum key I can us=
e is 2**31-1</div><ul><li>Is there a constant somewhere indicating the maxi=
mum key I can use in a IOBTree? I found that IBTreeFamily implements a maxi=
nt parameter, but how can I know which family I am using?<a class=3D"refere=
nce internal" href=3D"https://pythonhosted.org/BTrees/_modules/BTrees/Inter=
faces.html#IBTreeFamily"><span class=3D"viewcode-link"></span></a><br></li>=
<li>Is the maximum value the same for everyone? If no, how could I increase=
 this value?</li><li>Also, what are your thoughts on <a href=3D"https://git=
hub.com/zopefoundation/BTrees/issues/100">128-bit support</a>?</li></ul><di=
v><br></div><div>Thank you!<br></div><div>=C3=89loi Rivard<br></div><div><b=
r></div><div><br></div></div>

<p></p>

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