[sage-support] Re: is_RealNumber does not work
I was just trying to make something that would spot issues before an object is created. You know be robust. On 5/9/07, Justin C. Walker [EMAIL PROTECTED] wrote: On May 9, 2007, at 23:32 , Timothy Clemans wrote: Well I would like to make a Point class for a 2D coordinate system. So what is the best way to prevent most numbers with non-zero imaginary parts from becoming x and/or y in the definition of a given point? Like I would like to at least prevent 3 + i from being x and/or y. Why are you worried about this? Would it be a problem if someone tried to do this with an integer mod 37, or a Plymouth? Justin -- Justin C. Walker, Curmudgeon at Large Institute for the Absorption of Federal Funds --- If it weren't for carbon-14, I wouldn't date at all. --- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: is_RealNumber does not work
On May 9, 2007, at 23:44 , Timothy Clemans wrote: I was just trying to make something that would spot issues before an object is created. You know be robust. I know what you are after, but I am not sure this is the way to do it. You can spend a long time writing code that tries to predict all the ways a user can screw things up, and you will always end up with code that is full of those kind of holes, and which rapidly becomes unmaintainable. Maybe better to approach robustness a different way (e.g., by catching errors when they happen, with 'try' clauses). I think this thread is way OT now... Justin -- Justin C. Walker, Curmudgeon-At-Large Institute for the Enhancement of the Director's Income When LuteFisk is outlawed, Only outlaws will have LuteFisk --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: error when loading
On Wednesday 09 May 2007 07:35, Brian Harris wrote: Quotes didn't change the behavior for that script. However I get part- way through the example.sage script before the error: I get the same error with a fresh 2.5 install. ipython is at version 0.8.0. sage: version() 'SAGE Version 2.5, Release Date: 2007-05-08' sage: attach ctc.py --- type 'exceptions.AttributeError'Traceback (most recent call last) /home/malb/Uni/ctc/code/ipython console in module() /home/malb/sage-2.5/local/lib/python2.5/site-packages/IPython/iplib.py in ipmagic(self, arg_s) 955 else: 956 magic_args = self.var_expand(magic_args,1) -- 957 return fn(magic_args) 958 959 def ipalias(self,arg_s): /home/malb/sage-2.5/local/lib/python2.5/site-packages/IPython/Magic.py in magic_run(self, parameter_s, runner) 1674 if restore_main: 1675 sys.modules['__main__'] = restore_main - 1676 self.shell.reloadhist() 1677 1678 return stats /home/malb/sage-2.5/local/lib/python2.5/site-packages/IPython/iplib.py in reloadhist(self) 1255 1256 if self.has_readline: - 1257 self.readline.clear_history() 1258 self.readline.read_history_file(self.shell.histfile) 1259 Martin -- name: Martin Albrecht _pgp: http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x8EF0DC99 _www: http://www.informatik.uni-bremen.de/~malb _jab: [EMAIL PROTECTED] --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: error when loading
I experience the same problem. It happened after the upgrade so I just did an fresh install from source and got the same result...Dave On May 10, 9:33 am, Martin Albrecht [EMAIL PROTECTED] wrote: On Wednesday 09 May 2007 07:35, Brian Harris wrote: Quotes didn't change the behavior for that script. However I get part- way through the example.sage script before the error: I get the same error with a fresh 2.5 install. ipython is at version 0.8.0. sage: version() 'SAGE Version 2.5, Release Date: 2007-05-08' sage: attach ctc.py --- type 'exceptions.AttributeError'Traceback (most recent call last) /home/malb/Uni/ctc/code/ipython console in module() /home/malb/sage-2.5/local/lib/python2.5/site-packages/IPython/iplib.py in ipmagic(self, arg_s) 955 else: 956 magic_args = self.var_expand(magic_args,1) -- 957 return fn(magic_args) 958 959 def ipalias(self,arg_s): /home/malb/sage-2.5/local/lib/python2.5/site-packages/IPython/Magic.py in magic_run(self, parameter_s, runner) 1674 if restore_main: 1675 sys.modules['__main__'] = restore_main - 1676 self.shell.reloadhist() 1677 1678 return stats /home/malb/sage-2.5/local/lib/python2.5/site-packages/IPython/iplib.py in reloadhist(self) 1255 1256 if self.has_readline: - 1257 self.readline.clear_history() 1258 self.readline.read_history_file(self.shell.histfile) 1259 Martin -- name: Martin Albrecht _pgp:http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x8EF0DC99 _www:http://www.informatik.uni-bremen.de/~malb _jab: [EMAIL PROTECTED] --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
