Re: What is the maximum IBTree key my system can use?
Sean Upton <[email protected]> Tue, 8 Jan 2019 10:53:54 -0700
| Newsgroups | gmane.comp.web.zope.zodb |
|---|---|
| Message-ID | <[email protected]> |
--Apple-Mail=_2DB57742-5F58-4096-BA9D-9BCB57355648 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" > On Jan 8, 2019, at 10:09 AM, =C3=89loi Rivard <[email protected]> wrote: > This code raises TypeError: integer out of range > IOBTree()[BTrees.family64.maxint-1] =3D True You are using the wrong class. Try LOBTree explicitly, not IOBTree. > So this one is another problem. As it is written in the bug report, "the = BTrees documentation advises that we can also use data structures specializ= ed to integers, which are faster and use less memory", so I would prefer to= use a LOBTree than an OOBTree.=20 Then use an LOBTree, and use 64-bit (C long long) integers. It is not unre= asonable to suggest that you do not need 128 bit keys. Sean >> On Jan 8, 2019, at 8:12 AM, =C3=89loi Rivard <[email protected] <>> wrote= : >>=20 >> Hi. >> IOBTree()[(2**32)-1] =3D True is raising a TypeError on my computer, and= in 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 a = IOBTree? I found that IBTreeFamily implements a maxint parameter, but how c= an I know which family I am using? <https://pythonhosted.org/BTrees/_module= s/BTrees/Interfaces.html#IBTreeFamily> >> Is the maximum value the same for everyone? If no, how could I increase = this value? >> Also, what are your thoughts on 128-bit support <https://www.google.com/= url?q=3Dhttps%3A%2F%2Fgithub.com%2Fzopefoundation%2FBTrees%2Fissues%2F100&s= a=3DD&sntz=3D1&usg=3DAFQjCNGZrZF1SMHpTh_z6G72Em4rHnP8Qg>? >>=20 >> Thank you! >> =C3=89loi Rivard >>=20 >>=20 >>=20 >> --=20 >> You received this message because you are subscribed to the Google Group= s "zodb" group. >> To unsubscribe from this group and stop receiving emails from it, send a= n email to [email protected] <>. >> For more options, visit https://groups.google.com/d/optout <https://grou= ps.google.com/d/optout>. >=20 >=20 > --=20 > You received this message because you are subscribed to the Google Groups= "zodb" group. > To unsubscribe from this group and stop receiving emails from it, send an= email to [email protected] <mailto:zodb+unsubscribe@google= groups.com>. > For more options, visit https://groups.google.com/d/optout <https://group= s.google.com/d/optout>. --=20 You received this message because you are subscribed to the Google Groups "= zodb" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to [email protected]. For more options, visit https://groups.google.com/d/optout. --Apple-Mail=_2DB57742-5F58-4096-BA9D-9BCB57355648 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="UTF-8" <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; charset= =3Dutf-8"></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: s= pace; line-break: after-white-space;" class=3D""><br class=3D""><div><block= quote type=3D"cite" class=3D""><div class=3D"">On Jan 8, 2019, at 10:09 AM,= =C3=89loi Rivard <<a href=3D"mailto:[email protected]" class=3D"">azmeuk= @gmail.com</a>> wrote:</div><div class=3D""><div dir=3D"ltr" class=3D"">= <div class=3D"">This code raises <i class=3D"">TypeError: integer out of ra= nge</i><br class=3D""></div><div class=3D""><span style=3D"background-color= : rgb(238, 238, 238);" class=3D"">IOBTree()[BTrees.family64.maxint-1] =3D T= rue</span></div></div></div></blockquote><div><br class=3D""></div><div>You= are using the wrong class. Try LOBTree explicitly, not IOBTree.</div= ><br class=3D""><blockquote type=3D"cite" class=3D""><div class=3D""><div d= ir=3D"ltr" class=3D""><blockquote class=3D"gmail_quote" style=3D"margin: 0;= margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div sty= le=3D"word-wrap:break-word;line-break:after-white-space" class=3D""><div cl= ass=3D""><div class=3D""></div></div></div></blockquote><div class=3D""><sp= an style=3D"font-family: arial, sans-serif;" class=3D""><font size=3D"2" cl= ass=3D"">So this one is another problem. As it is written in the bug report= , "the BTrees documentation advises that we can also use <code class=3D"">d= ata structures specialized to integers, which are faster and use less memor= y"</code></font></span>, so I would prefer to use a LOBTree than an OOBTree= . <br class=3D""></div></div></div></blockquote><div><br class=3D""></div><= div>Then use an LOBTree, and use 64-bit (C long long) integers. It is= not unreasonable to suggest that you do not need 128 bit keys.</div><div><= br class=3D""></div><div>Sean</div><div><br class=3D""></div><br class=3D""= ><blockquote type=3D"cite" class=3D""><div class=3D""><div dir=3D"ltr" clas= s=3D""><blockquote class=3D"gmail_quote" style=3D"margin: 0;margin-left: 0.= 8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div style=3D"word-wrap= :break-word;line-break:after-white-space" class=3D""><div class=3D""><div c= lass=3D""><div class=3D""><blockquote type=3D"cite" class=3D""><div class= =3D"">On Jan 8, 2019, at 8:12 AM, =C3=89loi Rivard <<a target=3D"_blank"= gdf-obfuscated-mailto=3D"58-3VeOzEQAJ" rel=3D"nofollow" class=3D"">azm...@= gmail.com</a>> wrote:</div><br class=3D""><div class=3D""><div dir=3D"lt= r" class=3D""><div class=3D"">Hi.</div><div class=3D""><span style=3D"backg= round-color:rgb(204,204,204)" class=3D""><i class=3D""><b class=3D"">IOBTre= e()[(2**32)-1] =3D True</b></i></span> is raising a TypeError on my compute= r, and in fact it seems the maximum key I can use is 2**31-1</div><ul class= =3D""><li class=3D"">Is there a constant somewhere indicating the maximum k= ey I can use in a IOBTree? I found that IBTreeFamily implements a maxint pa= rameter, but how can I know which family I am using?<a href=3D"https://pyth= onhosted.org/BTrees/_modules/BTrees/Interfaces.html#IBTreeFamily" target=3D= "_blank" rel=3D"nofollow" class=3D""><span class=3D""></span></a><br class= =3D""></li><li class=3D"">Is the maximum value the same for everyone? If no= , how could I increase this value?</li><li class=3D"">Also, what are your t= houghts on <a href=3D"https://www.google.com/url?q=3Dhttps%3A%2F%2Fgithub.c= om%2Fzopefoundation%2FBTrees%2Fissues%2F100&sa=3DD&sntz=3D1&usg= =3DAFQjCNGZrZF1SMHpTh_z6G72Em4rHnP8Qg" target=3D"_blank" rel=3D"nofollow" c= lass=3D"">128-bit support</a>?</li></ul><div class=3D""><br class=3D""></di= v><div class=3D"">Thank you!<br class=3D""></div><div class=3D"">=C3=89loi = Rivard<br class=3D""></div><div class=3D""><br class=3D""></div><div class= =3D""><br class=3D""></div></div><div class=3D""><br class=3D""></div> -- <br class=3D""> You received this message because you are subscribed to the Google Groups "= zodb" group.<br class=3D""> To unsubscribe from this group and stop receiving emails from it, send an e= mail to <a target=3D"_blank" gdf-obfuscated-mailto=3D"58-3VeOzEQAJ" rel=3D"= nofollow" class=3D"">zodb+uns...@googlegroups.<wbr class=3D"">com</a>.<br c= lass=3D""> For more options, visit <a href=3D"https://groups.google.com/d/optout" targ= et=3D"_blank" rel=3D"nofollow" class=3D"">https://groups.google.com/d/<wbr = class=3D"">optout</a>.<br class=3D""> </div></blockquote></div><br class=3D""></div></div></div></blockquote></di= v><div class=3D""><br class=3D"webkit-block-placeholder"></div> -- <br class=3D""> You received this message because you are subscribed to the Google Groups "= zodb" group.<br class=3D""> To unsubscribe from this group and stop receiving emails from it, send an e= mail to <a href=3D"mailto:[email protected]" class=3D"">zod= [email protected]</a>.<br class=3D""> For more options, visit <a href=3D"https://groups.google.com/d/optout" clas= s=3D"">https://groups.google.com/d/optout</a>.<br class=3D""> </div></blockquote></div><br class=3D""></body></html> <p></p> -- <br /> You received this message because you are subscribed to the Google Groups &= quot;zodb" group.<br /> To unsubscribe from this group and stop receiving emails from it, send an e= mail to <a href=3D"mailto:[email protected]">zodb+unsubscri= [email protected]</a>.<br /> For more options, visit <a href=3D"https://groups.google.com/d/optout">http= s://groups.google.com/d/optout</a>.<br /> --Apple-Mail=_2DB57742-5F58-4096-BA9D-9BCB57355648--