I believe that's the problem that the indexing PEP from Travis is supposed to address: http://www.python.org/dev/peps/pep-0357/ So I think there's not much anyone can do about it untill the PEP is accepted and implemented.
Maybe you can cast to int? > In [34]: (1,2)[int(a[0]==b)] --bb On 7/15/06, Fernando Perez <[EMAIL PROTECTED]> wrote: > Hi all, > > I just got bit by this problem, and I'm not really sure if this is > something that should be considered a numpy bug or not. It is a bit > unpleasant, at the least, though it can be easily worked around. > Here's a simple demonstration: > > In [32]: a=array([1,2]) > > In [33]: b=1 > > In [34]: (1,2)[a[0]==b] > --------------------------------------------------------------------------- > exceptions.TypeError Traceback (most > recent call last) > > /home/fperez/research/code/mwmerge/mwadap-merge/mwadap/test/<ipython console> > > TypeError: tuple indices must be integers > > > Whereas this works: > > In [35]: c=2 > > In [36]: (1,2)[c==b] > Out[36]: 1 > > Basically, it seems that array scalars, upon comparisons, return > something that doesn't 'looke enough like an int' to python for it to > let you use it as an index, it's a 'boolscalar': > > In [38]: a0==b0 > Out[38]: True > > In [39]: type _ > -------> type(_) > Out[39]: <type 'boolscalar'> > > > Advice? Is this a numpy bug? Or should it just be left alone, and > this kind of inconvenience will disappear when 2.5 is out, with > __index__ support? > > Cheers, > > f > > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Numpy-discussion mailing list > Numpy-discussion@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/numpy-discussion > -- William V. Baxter III OLM Digital Kono Dens Building Rm 302 1-8-8 Wakabayashi Setagaya-ku Tokyo, Japan 154-0023 +81 (3) 3422-3380 ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
