On Tue, Apr 29, 2008 at 8:52 AM, mabshoff
<[EMAIL PROTECTED]> wrote:
>
>
>
> On Apr 29, 5:40 pm, Robert Bradshaw <[EMAIL PROTECTED]>
> wrote:
>
> > On Apr 28, 2008, at 11:32 PM, mabshoff wrote:
>
> <SNIP>
>
>
> > > The file system underneath Sage is for now a Unix file system which
> > > uses "space" as a separator. It is generally a bad idea to use
> > > anything non [a-zA-Z0-9] in file names since it will likely break with
> > > other encodings and/or file systems. Windows introduced the rather
> > > stupid concept that allows file system path to contain spaces and it
> > > has broken numerous tools like the autotools for example. Having
> > > spaces or any other characters in file names is something you do not
> > > do and I personally see no reason why we should work around that
> > > limitation.
> >
> > I think spaces in filenames is something that should be supported,
> > especially as we look to porting to Windows (where the users entire
> > home folder sits inside "Documents and Settings." The preparser
> > shouldn't be called on lines sent to the shell, though I'm not sure
> > how to best detect that (other than explicitly prefacing with a "!").
> > It is kind of odd that ipython will automatically treat some commands
> > as shell commands.
> >
>
> Yes, but there are two bugs here:
>
> a) an issue in ipython, i.e.
>
> sage: cd?
> Type: Magic function
> Base Class: <type 'instancemethod'>
> String Form: <bound method InteractiveShell.magic_cd of
> <IPython.iplib.InteractiveShell object at 0x600000000036e950>>
> Namespace: IPython internal
> File: /home/mabshoff/sage-3.0.1.alpha0/local/lib/python2.5/
> site-packages/IPython/Magic.py
> Definition: cd(self, parameter_s='')
> Docstring:
> Change the current working directory.
>
> cd either needs to learn how to escape certain characters or just put
> quotes around the name. Quotes won't help if you have quotes in a file
> name [which some people do - I have seen it].
>
> On Windows we could always convert long file names [with spaces] to
> short 8.3 file names, but I guess that would require hacking on
> ipython itself. Either way, we are running some quite old version of
> ipython and we maybe should consider upgrading.
>
> b) The preparser, i.e. 3.0->RealNumber(3.0): This is a more general
> issue, i.e. people get bitten by it when using numpy/scipy regularly.
> I am not sure what can be done here on a technical level to avpoid
> this whole mess. Any ideas?
>
It's 3.0 -> RealNumber('3.0')
Regarding numpy/scipy the only longterm solution is to fix numpy/scipy
to call the __float__ method instead of going boom on certain data
types. People can also just type RealNumber = float and Integer=int,
in the meantime, which works very well.
-- William
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